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JP2016163058

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DESCRIPTION JP2016163058
The present invention relates to a speaker array device capable of outputting an audio beam by a
speaker array having a plurality of speakers, and to provide a speaker array device capable of
improving the quality of sound field expression by the audio beam. A speaker array device (1)
has a height speaker array unit (30), distributes an audio signal input from the outside to each
speaker (31) of the height speaker array unit (30), and outputs the sound from the speaker The
audio beam of the height channel is output by controlling the output timing of The speakers 31
of the height speaker array unit 30 show a large sound pressure in the proper output direction D,
and show a small sound pressure as they get closer to the direction away from the proper output
direction D (that is, in the direction horizontal to the arrangement surface). The speakers 31 of
the height speaker array unit 30 are disposed on the mounting surface 36 of the cabinet 35 such
that the proper output direction D forms an elevation angle (ie, an upward angle with respect to
the horizontal direction). [Selected figure] Figure 6
Speaker array device
[0001]
The present invention relates to a speaker array device capable of outputting an audio beam by a
speaker array having a plurality of speakers.
[0002]
Conventionally, the speaker array device outputs a slightly different delay time so that the same
audio signal can simultaneously reach the focal point in space from a plurality of linear and
planarly arranged loudspeakers. The acoustic energy of the light source is intensified by in-phase
addition, and as a result, a technique is used to produce an audio beam having a strong
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directivity in the focal direction.
[0003]
As an invention related to such a speaker array device, for example, the invention described in
Patent Document 1 is known.
The speaker array device described in Patent Document 1 is multichannel (for example, center
channel (Cch), front left channel (Lch), front right channel (Rch), surround left channel (SLch),
surround right channel (SRch), etc. The delay processing is performed on each of the audio
signals, and the delayed signals of all the channels are added and supplied to the speaker, so that
voice beams relating to multi-channel have different directivity and are simultaneously output.
doing.
[0004]
And the speaker array device of patent document 1 makes the sound beam concerning each
channel reach a listening position from various directions by reflecting the sound beam
concerning multi-channel on the wall of installation space of a room etc., respectively. Can
provide a good surround effect to the listener located at the listening position.
[0005]
Unexamined-Japanese-Patent No. 2004-363495
[0006]
Here, in the surround sound, there is known a mode in which a height channel from the upper
left and right of the device to the listening position is added to the sound field representation in
the horizontal direction as in the speaker array device described in Patent Document 1.
According to the aspect in which the height channel is added, it is possible to represent the
sound field relating to the height and the depth direction, so it is possible to realize a more
advanced sound field expression.
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[0007]
As in the speaker array device described in Patent Document 1, a case where a height channel
can be output by an audio beam will be considered.
As described above, since the sound relating to the height channel needs to be output from the
front upper side to the listening position, the sound beam relating to the height channel is to be
reflected on the ceiling surface to reach the listening position It is desirable that the signal be
output to the speaker array device so as to make a predetermined elevation angle.
[0008]
In this respect, in the speaker array device described in Patent Document 1, the speakers
constituting the speaker array are attached to a planar arrangement surface extending vertically,
and generally, are directed in a direction horizontal to the arrangement surface. The sound
pressure tends to decrease as
Therefore, when the speakers are arranged as in the speaker array device described in Patent
Document 1, the sound pressure in the direction of making a predetermined elevation angle is
lowered, so the sound of the sound beam output in the direction of making the elevation angle It
is assumed that the pressure is insufficient to ensure sufficient directivity. In this case, in the
speaker array device, a sound beam relating to the height channel may not be able to perform
sufficient sound field expression.
[0009]
Furthermore, each of the speakers constituting the speaker array exhibits high sound pressure in
the direction perpendicular to the arrangement surface in the vicinity of the center of the
speakers, and exhibits strong directivity. Therefore, as in the speaker array device described in
Patent Document 1, when the speaker array is provided, it is assumed that the sound pressure of
the sound beam in the direction directly toward the listening position becomes strong. In this
case, the sound directed to the listening position from the device may disturb the sound field
expression on the height channel.
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[0010]
The present invention has been made in view of the above-mentioned problems, and relates to a
speaker array device capable of outputting an audio beam by a speaker array having a plurality
of speakers, which increases the sound pressure to the ceiling surface side and at the same time
the device front. Provided is a speaker array device capable of reducing sound pressure to the
side.
[0011]
A speaker array device according to one aspect of the present invention includes a device
housing, and a speaker array having a plurality of speakers disposed at least in the vertical
direction on a surface facing the listening position in the device housing. A speaker capable of
distributing an audio signal input from the outside to all or part of the speakers of the speaker
array, controlling the output timing of the sound output from the speaker, and outputting it as an
audio beam It is an array apparatus, The speaker which comprises the said speaker array is
arrange | positioned at the said arrangement | positioning surface in the said apparatus housing |
casing so that the big appropriate output direction of sound pressure makes the elevation angle
by sound pressure distribution at the time of the output of the said audio | voice. It is
characterized by being set up.
[0012]
The speaker array device includes a device casing, and a speaker array having a plurality of
speakers disposed at least in the vertical direction on the disposition surface of the device casing,
and the speaker array device An audio beam directed from the upper position to the listening
position is output by distributing an audio signal input from the outside to all or part of the
speakers and controlling the output timing of the audio output from the speakers. Can.
Here, the speakers constituting the speaker array generally exhibit a large sound pressure in the
proper output direction, and the smaller the sound pressure, the closer to the direction away
from the proper output direction (that is, in the direction horizontal to the arrangement surface).
Tend to show.
Therefore, according to the speaker array device, the arrangement surface of the device housing
is configured such that the proper output direction of the speakers forming the speaker array
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forms an elevation angle (that is, an angle upward with respect to the horizontal direction). As
the sound beam is output, the sound pressure to the ceiling surface side can be increased, and
the sound pressure to the front side of the device can be reduced. It can improve the quality.
[0013]
A speaker array device according to another aspect of the present invention is the speaker array
device according to claim 1, wherein the speakers constituting the speaker array have a larger
elevation angle as the lower side of the speaker array. It arrange | positions on the said
arrangement | positioning surface in a housing, It is characterized by the above-mentioned.
[0014]
According to the speaker array device, the speaker array device is disposed on the disposition
surface of the device housing so as to make the elevation angle larger toward the lower side of
the speaker array. As a whole, the sound pressure on the front side of the device can be reduced
while increasing the sound pressure on the ceiling side, and the quality of sound field expression
by the height channel can be further enhanced.
[0015]
The speaker array device according to another aspect of the present invention is the speaker
array device according to claim 1 or 2, wherein the disposition surface of the device casing is the
listening position as the disposition surface is increased. It is characterized by being inclined so
as to be far from.
[0016]
According to the speaker array device, the disposition surface of the device casing is inclined to
be farther from the listening position as it is above the disposition surface. By arranging each
speaker, the proper output direction can be in a state of making an elevation angle, and at the
same time the sound pressure to the ceiling surface side is increased as the whole speaker array
at the time of the output of the sound beam related to the height channel, Sound pressure to the
front of the device can be reduced.
[0017]
The speaker array device according to another aspect of the present invention is the speaker
array device according to claim 1 or 2, wherein the disposition surface of the device casing is the
listening position as the disposition surface is increased. It is characterized by being curved so as
to be far from.
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[0018]
According to the speaker array device, the disposition surface of the device casing is curved so as
to be farther from the listening position above the disposition surface. By arranging each
speaker, the proper output direction can be in a state of making an elevation angle, and at the
same time the sound pressure to the ceiling surface side is increased as the whole speaker array
at the time of the output of the sound beam related to the height channel, Sound pressure to the
front of the device can be reduced.
[0019]
A speaker array device according to another aspect of the present invention is the speaker array
device according to any one of claims 1 to 3, which is a blocking member that blocks voice
directly transmitted from the speaker to the listening position. It is characterized by having.
[0020]
According to the speaker array device, by disposing the blocking member, it is possible to block
the sound directly transmitted from the speaker to the listening position. Therefore, when
outputting the sound beam relating to the height channel, the device front side The sound
pressure on the sound channel can be reduced, thereby further enhancing the quality of sound
field representation by the height channel.
[0021]
The speaker array device according to another aspect of the present invention is the speaker
array device according to claim 5, wherein the blocking member protrudes from the lower side of
the speaker and is disposed so as to cover the lower portion of the speaker It is characterized by
being constituted by the sound insulation board.
[0022]
In the speaker array device, the blocking member is constituted by a sound insulating plate
disposed so as to protrude from the lower side of the speaker and cover the lower side of the
speaker, so that the sound beam concerning the height channel is output. While reducing the
sound pressure to the front side of the device, it is possible to increase the sound pressure to the
ceiling side, thereby further improving the quality of the sound field expression by the height
channel.
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[0023]
The speaker array device according to another aspect of the present invention is the speaker
array device according to claim 5, wherein the blocking member is on the listening position side
with respect to the placement surface and above the horizontal direction of each speaker It is
characterized in that a net portion having an aperture ratio higher than the horizontal direction
of the speaker is provided on the side.
[0024]
In the speaker array device, the blocking member has a net portion having an aperture ratio
higher than the horizontal direction of the speakers on the listening position side of the
arrangement surface and above the horizontal direction of the speakers. Therefore, when
outputting an audio beam relating to the height channel, the sound pressure to the front side of
the device can be reduced and at the same time the sound pressure to the ceiling side can be
increased. , Can be further enhanced.
[0025]
A speaker array device according to another aspect of the present invention is the speaker array
device according to any one of claims 1 to 7, wherein the speakers of the speaker array are
located vertically above the speaker array. The speaker may be disposed at different positions in
the horizontal direction on the arrangement surface.
[0026]
In the speaker array device, the speakers of the speaker array are arranged at positions different
in the horizontal direction on the arrangement surface with respect to the speakers located
vertically above the speaker array.
When the speakers constituting the speaker array are disposed such that the proper output
direction has an elevation angle, it is assumed that the sound output from the speakers is blocked
by the speaker located vertically above the speaker array. .
In this respect, according to the loudspeaker array, the loudspeakers of the loudspeaker array are
disposed at different positions in the horizontal direction in the arrangement plane with respect
to the loudspeakers located vertically upward, so that the loudspeakers from the respective
loudspeakers The sound output is not disturbed, so that the quality of the sound field expression
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by the height channel can be further enhanced.
[0027]
According to the speaker array device of the present invention, the arrangement surface of the
device housing is configured such that the proper output direction of the speakers constituting
the speaker array is an elevation angle (that is, the angle upward with respect to the horizontal
direction). By providing the sound beam for the height channel, the sound pressure to the ceiling
surface side can be increased and the sound pressure to the front side of the device can be
reduced. It can enhance the quality of expression.
[0028]
It is a front view of a speaker array device concerning a 1st embodiment.
It is explanatory drawing which shows a mode that the audio | voice beam of a multi-channel is
output by a speaker array apparatus.
It is an explanatory view about sound pressure distribution of a speaker which constitutes a
speaker array device.
It is explanatory drawing of sound pressure distribution in the conventional height speaker array
unit.
It is a block diagram showing a control system of a speaker array device.
It is an explanatory view showing a height speaker array unit concerning a 1st embodiment.
It is an explanatory view showing a height speaker array unit concerning a 2nd embodiment.
It is an explanatory view showing a height speaker array unit concerning a 3rd embodiment.
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It is an explanatory view showing a height speaker array unit concerning a 4th embodiment.
It is explanatory drawing which shows the height speaker array unit which concerns on 5th
Embodiment.
It is an explanatory view showing a height speaker array unit concerning a 6th embodiment.
It is explanatory drawing which shows the height speaker array unit which concerns on 7th
Embodiment.
It is a front view which shows the modification (1) of a height speaker array unit. It is a front
view which shows the modification (2) of a height speaker array unit.
[0029]
Hereinafter, an embodiment in which a speaker array device according to the present invention
is applied to a speaker array device 1 will be described in detail with reference to the drawings.
[0030]
First Embodiment First, a schematic configuration of a speaker array device 1 according to a first
embodiment will be described in detail with reference to FIGS. 1 to 3.
As shown in FIG. 1, the speaker array device 1 includes a speaker array unit 20 that performs
sound field expression related to the horizontal direction on the front surface (surface facing the
viewer) of the device body 1A, and a height direction (vertical direction The speaker array unit
30 is provided to perform sound field expression according to), and by arranging the output
direction of the sound beam of each channel constituting the multi-channel, the speaker is
disposed as if it is around the listener. It can give you a feeling of surround sound.
[0031]
The speaker array unit 20 has a plurality of speakers 21 arranged in a matrix at the center of the
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front of the apparatus body 1A, and the center channel (Cch), the front left channel (Lch), and the
front right channel (Rch) The audio beams of the surround left channel (SLch) and the surround
right channel (SRch) are output (see FIG. 2A).
[0032]
As shown in FIG. 1, the speaker array unit 20 is configured by arranging a plurality of speakers
21 in the vertical direction and the horizontal direction.
The speaker array unit 20 adjusts the timing at which the surround sound is output from each
speaker 21 for each channel and emits it in a beam shape, and performs delay control so that the
sound beam is focused at an arbitrary position such as a wall surface. Then, the sound of each
channel is reflected to the wall of the room Ro in which the speaker array device 1 is installed,
thereby creating a sound source (virtual speaker 90L etc.) at an arbitrary point, forming a multichannel sound field, and surround The voice is reproduced (see FIG. 2A).
[0033]
Specifically, when an audio voice or the like is input from the outside, the speaker array device 1
outputs the voice of Cch as a direct sound to the listener U as shown in FIG. The sound of Rch is
output as a reflected sound reflected once by the left wall WL, and the sound of Rch is output as
a reflected sound reflected once by the right wall WR. Then, the speaker array device 1 outputs
the sound of SLch as a reflected sound reflected twice by the left wall WL and the rear wall WB,
and the sound of SRch as a reflected sound reflected twice by the right wall WR and the rear wall
WB. Output.
[0034]
Therefore, the listener U receives Cch output from the speaker array device 1 located in front of
the listening position, Lch from the virtual speaker 90L located in front of the listening position,
virtual speaker 90SL located in the left rear of the listening position Since it is possible to listen
at the listening position, SLch from the left, SRch from the virtual speaker 90SR located to the
right rear of the listening position, and Rch from the virtual speaker 90R located to the right
front of the listening position, ideal surround sound is obtained. It can be enjoyed.
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[0035]
The height speaker array unit 30 has a plurality of speakers 31 arranged in a line extending in
the vertical direction at both left and right end portions of the front of the apparatus body 1A,
and the height left channel (HLch) and the height R channel The voice beam (hereinafter referred
to as height voice beam SH) related to (HRch) is output.
In the following description, the height speaker array unit 30, which is located at the left end of
the front of the device body 1A and outputs an audio beam related to HLch, is referred to as
"height speaker array unit 30L" and is located at the right end of the front of the device body 1A.
The height speaker array unit 30 which is located and outputs the sound beam related to HRch is
referred to as "height speaker array unit 30R". Also, the height speaker array unit 30L and the
height speaker array unit 30R are collectively referred to as "height speaker array unit 30". The
specific configuration of the height speaker array unit 30 will be described later with reference
to the drawings.
[0036]
The height speaker array unit 30 adjusts the timing at which the surround sound is output from
each speaker 31 for each channel and emits it in a beam shape, and performs delay control so
that the sound beam is focused at an arbitrary position on the ceiling CE. Then, the sound of each
channel is reflected to the ceiling CE of the room Ro where the speaker array device 1 is
installed, thereby creating a sound source (virtual speaker 90HL, virtual speaker 90HR) at an
arbitrary point on the ceiling CE Surround sound is reproduced by adding height and depth
direction expressions to the scene (see FIG. 2 (B)).
[0037]
(Structure of Each Speaker 31 in Height Speaker Array Unit 30) The speakers 31 constituting the
height speaker array unit 30 are general dynamic speakers, and the center cap 32, diaphragm
33, voice coil, magnet, etc. are inside the frame 34. (See Figure 3). The speaker 31 generates a
magnetic field by flowing a current according to an audible sound signal to the voice coil, and
generates sound by vibrating the diaphragm 33 together with the voice coil by repulsion and
attraction with the magnet. It is configured to output.
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[0038]
The sound pressure distribution of the speaker 31 shows the largest sound pressure in the
direction perpendicular to the surface of the speaker 31 in the vicinity of the center line of the
speaker 31, and the sound pressure increases as it approaches the direction horizontal to the
surface of the speaker 31. Shows a tendency to become smaller. In the present embodiment, in
the sound pressure distribution of the speaker 31, the direction showing the largest sound
pressure (that is, the direction perpendicular to the surface of the speaker 31) is referred to as
the proper output direction D.
[0039]
The sound pressure distribution when the height speaker array unit 30 is configured by
arranging a plurality of speakers 31 on a planar arrangement surface will be described with
reference to FIG. In the case shown in FIG. 4, the speakers 31 are disposed such that the
respective proper output directions D are perpendicular to the disposition surface.
[0040]
As shown in FIG. 3, the sound pressure distribution of each speaker 31 shows a large sound
pressure because the direction perpendicular to the disposition surface is the proper output
direction D, and it proceeds in the direction horizontal to the disposition surface The sound
pressure tends to decrease as Therefore, in the height speaker array unit 30 in this case, the
sound pressure in the direction perpendicular to the arrangement surface increases, and the
sound pressure decreases as it goes in the direction horizontal to the arrangement surface (see
FIG. 4). . As a result, in the height speaker array unit 30, the sound pressure of the sound beam
output in the direction of making a predetermined elevation angle (one direction close to the
arrangement surface) is insufficient, and sufficient directivity can be obtained. It is assumed that
it can not be secured. That is, in the height speaker array unit 30 shown in FIG. 4, there may
occur a case where sufficient sound field expression can not be performed by the sound beam
related to the height channel.
[0041]
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Further, in the case shown in FIG. 4, the height speaker array unit 30 is high since it corresponds
to the proper output direction D in the direction directly facing the arrangement surface (that is,
the direction perpendicular to the arrangement surface). Output a sound pressure sound beam.
On the other hand, the sound pressure of the sound beam in the direction of making a
predetermined elevation angle becomes smaller according to the sound pressure distribution of
each speaker 31 (see FIG. 3). When configured in this manner, in the height speaker array unit
30, the sound pressure between the sound beam directed in the direction directly toward the
listening position (ie, the proper output direction D) and the sound pressure of the sound beam
pertaining to the height channel A balance may occur, and the sound field expression related to
the height channel may be disturbed. In view of these points, the speaker array device 1
according to the first embodiment is configured to be able to perform sufficient sound field
expression by the sound beam related to the height channel.
[0042]
(Control System of Speaker Array Device 1) Subsequently, the control system configuration of the
speaker array device 1 will be described in detail with reference to FIG. As shown in FIG. 5, the
speaker array device 1 includes an A / D converter 2, a storage unit 3, an operation unit 4, a
display unit 5, a system control unit 10, a beam forming unit 15, and a speaker array. A unit 20
and a height speaker array unit 30 are provided in the device main body 1A, and have a
microphone 40. The speaker array device 1 further includes an Lch terminal, an Rch terminal, an
SLch terminal, an SRch terminal, a Cch terminal, an HLch terminal, and an HRch terminal as
external input terminals of a surround sound signal related to multichannel.
[0043]
The microphone 40 is a nondirectional microphone and is connected to the A / D converter 2.
The microphone 40 is for collecting test audio signals output from the speaker array unit 20 and
the height speaker array unit 30 when setting the output direction of the audio beam by the
speaker array unit 20 and the height speaker array unit 30. It is.
[0044]
The A / D converter 2 converts (samples) the analog audio signal collected by the microphone 40
into a digital audio signal, and outputs the digital audio signal to the system control unit 10.
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[0045]
The storage unit 3 stores the digital audio signal output from the A / D converter 2 via the
system control unit 10.
Specifically, the storage unit 3 stores the digital sound signal, which is collected by the
microphone 40 and output through the A / D converter 2 and the system control unit 10, in
association with the output angle of the sound beam.
[0046]
The operation unit 4 receives various setting inputs from the listener U at the time of installation
of the speaker array device 1 or the like, and outputs a signal corresponding to the input to the
system control unit 10.
[0047]
The display unit 5 displays the content according to the control signal based on the control signal
output from the system control unit 10 and transmits the content to the listener U.
[0048]
The system control unit 10 includes a user I / F processing unit 11, a beam control processing
unit 12, and a measurement data analysis processing unit 13.
[0049]
The user I / F processing unit 11 outputs a control signal to each unit of the speaker array device
1 according to the operation accepted by the operation unit 4.
Also, the user I / F processing unit 11 causes the display unit 5 to display the content to be
notified to the listener U according to the situation of the speaker array device 1.
[0050]
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The beam control processing unit 12 outputs a test audio signal to the beam forming unit 15
when executing an audio beam setting mode for setting an angle at which the audio beam of
each channel is output at the time of installation of the speaker array apparatus 1 or the like. The
sound beam of the test sound to be output from the unit 20 is swept (turned).
[0051]
The measurement data analysis processing unit 13 causes the storage unit 3 to store the test
sound signal output from the speaker array unit 20 and collected by the microphone 40 when
the sound beam setting mode is performed.
Further, when the collection of the audio signal is completed, the measurement data analysis
processing unit 13 reads out the audio signal stored in the storage unit 3 to detect the peaks of
the audio signal, and each channel constituting the multichannel based on each peak. The output
angle of the voice is set, and the result is output to the beam control processing unit 12.
[0052]
The beam control processing unit 12 outputs, to the beam forming unit 15, an angle setting
signal for setting the angle of each channel based on the analysis result output from the
measurement data analysis processing unit 13.
[0053]
The beam forming unit 15 has a block including a delay unit 16 and a power amplifier 17 for
each of the speakers 21 constituting the speaker array unit 20, the height speaker array unit
30L, and the speakers 31 constituting the height speaker array unit 30R. There is.
A block for each speaker 21 of the speaker array unit 20 includes a delay unit 16 for delaying
and processing an audio signal related to each channel of Lch, Rch, SLch, SRch, and Cch, and an
audio signal of each channel output from the delay unit 16 And a power amplifier 17 for
amplifying the signal output from the adder 18 to form an audio beam.
A speaker 21 is connected to the output of each block.
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[0054]
Then, the block for each speaker 31 of the height speaker array unit 30L includes a delay unit 16
for delaying an audio signal related to HLch and a signal output from the delay unit 16 to form a
height audio beam SH related to HLch. A power amplifier 17 for amplifying is provided.
The block for each speaker 31 of the height speaker array unit 30R includes a delay unit 16 for
delaying an audio signal of HRch and a signal output from the delay unit 16 for forming a height
audio beam SH of HRch. A power amplifier 17 for amplifying is provided. The speakers 31 are
connected to the outputs of the blocks related to the height speaker array unit 30R and the
height speaker array unit 30L, respectively.
[0055]
The beam forming unit 15 forms an audio beam of each channel based on the angle setting
signal of each channel output from the system control unit 10, and outputs an audio signal to the
speaker array unit 20 and the height speaker array unit 30. . Also, when a test signal is output
from the system control unit 10, the beam forming unit 15 processes the audio signal so as to
sweep the audio beam output from the speaker array unit 20 and the height speaker array unit
30, An audio signal is output to the speaker array unit 20 and the height speaker array unit 30.
[0056]
The speaker array unit 20 outputs an audio beam of each channel of Lch, Rch, SLch, SRch, and
Cch constituting the multi-channel based on the audio signal output from the beam forming unit
15.
[0057]
The height speaker array unit 30 outputs an audio beam of each channel of HLch and HRch
constituting a multi-channel based on the audio signal output from the beam forming unit 15.
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Specifically, the height speaker array unit 30L outputs an audio beam of HLch based on the
audio signal output from the beam forming unit 15, and the height speaker array unit 30R
outputs the audio output from the beam forming unit 15. Based on the signal, an HRch voice
beam is output.
[0058]
When setting the output angle of the voice beam, if it is set to increase the measurement
accuracy, the system control unit 10 executes the sweep of the test voice beam multiple times to
integrate and average the voice signal. The respective units of the speaker array device 1 are
controlled so as to execute, etc.
[0059]
(Specific Configuration of Height Speaker Array Unit 30 According to First Embodiment)
Subsequently, the specific configuration of the height speaker array unit 30 according to the first
embodiment will be described in detail with reference to the drawings.
FIG. 6 is an explanatory view showing the configuration of the height speaker array unit 30
according to the first embodiment, FIG. 6 (A) is a front view, and FIG. 6 (B) is a side sectional
view.
[0060]
In the following description, a part of the device main body 1A of the speaker array device 1 is
omitted for the sake of illustration. The cabinet 35 is a part of the device main body 1A as a
housing of the speaker array device 1, and the disposition surface 36 is a part of the front
surface of the device main body 1A (the surface facing the listening position (listener U)).
Configure.
[0061]
As shown in FIG. 6A, in the height speaker array unit 30 according to the first embodiment, six
speakers 31 are linearly extended in the vertical direction on the arrangement surface 36 of the
cabinet 35. Is configured.
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[0062]
The arrangement surface 36 of the cabinet 35 is inclined to be positioned on the rear side of the
speaker array device 1 as it goes upward (that is, as it goes away from the listening position as it
goes upward).
Then, in the height speaker array unit 30 according to the first embodiment, the speakers 31 are
fixed so as to form a predetermined angle with respect to the disposition surface 36 thus
inclined. Therefore, as shown in FIG. 6B, each of the speakers 31 constituting the height speaker
array unit 30 has a cabinet 35 so that the proper output direction D forms an elevation angle (ie,
an upward angle with respect to the horizontal direction). Is disposed on the disposition surface
36 of the
[0063]
Thereby, in the speaker array device 1 according to the first embodiment, each speaker 31 of the
height speaker array unit 30 is inclined so as to be farther from the listening position as it goes
upward so that the proper output direction D makes an elevation angle. The sound pressure of
the sound beam directed to the ceiling CE side can be increased because the sound beam is
arranged on the arranged surface 36.
[0064]
Further, when arranged as shown in FIG. 6 (B), the horizontal direction which is the listening
position side is closer to the sound pressure than the proper output direction D as can be
understood from the sound pressure distribution of the speaker 31 shown in FIG. Corresponds to
the small direction of
Therefore, in the speaker array device 1 according to the first embodiment, it is possible to
reduce the sound pressure in the direction (horizontal direction) from the height speaker array
unit 30 toward the listening position.
[0065]
As described above, the speaker array device 1 according to the first embodiment includes the
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height speaker array unit 30, and the plurality of speakers 31 constituting the height speaker
array unit 30 are externally input. By distributing the audio signal and controlling the output
timing of the audio output from the speaker, it is possible to output the audio beam of the height
channel from the upper position to the listening position (see FIG. 2B).
[0066]
As shown in FIG. 3, the speakers 31 constituting the height speaker array unit 30 exhibit a large
sound pressure in the proper output direction D, and approach a direction away from the proper
output direction D (that is, a direction parallel to the arrangement surface) The tendency is to
show a small sound pressure.
Therefore, according to the speaker array device 1, as shown in FIG. 6 (B), in the speakers 31
constituting the height speaker array unit 30, the proper output direction D is an elevation angle
(that is, an upward angle with respect to the horizontal direction) Because the sound beam on the
height channel is output, the sound pressure on the ceiling CE side is increased while the
listening position on the front side of the device is increased. Sound pressure can be reduced.
That is, according to the speaker array device 1, it is possible to balance the sound pressure of
the sound beam relating to the height channel toward the ceiling CE and the sound pressure of
the sound beam toward the front of the device. The quality of sound field expression can be
improved.
[0067]
Further, in the speaker array device 1 according to the first embodiment, the disposition surface
36 of the cabinet 35 is inclined to be farther from the listening position above the disposition
surface 36, so the disposition surface 36 is inclined. By arranging the speakers 31 of the height
speaker array unit 30 with respect to each other, it is possible to make the proper output
direction D make an elevation angle, and when outputting the sound beam relating to the height
channel The sound pressure on the front side of the device can be reduced while increasing the
sound pressure on the CE side. That is, according to the speaker array device 1, it is possible to
balance the sound pressure of the sound beam related to the height channel toward the ceiling
CE and the sound pressure of the sound beam toward the front of the device. It is possible to
perform sound field representation by height channel while suppressing the influence of the
sound beam caused by the sound beam.
09-05-2019
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[0068]
Second Embodiment An embodiment (second embodiment) different from the first embodiment
described above will be described in detail with reference to FIG. The speaker array device 1
according to the second embodiment has substantially the same basic configuration as the
speaker array device 1 according to the first embodiment, and the configuration of the height
speaker array unit 30 is different. About the same composition as a 1st embodiment, the
explanation is omitted and the composition concerning a difference is explained in detail.
[0069]
(Specific Configuration of Height Speaker Array Unit 30 According to Second Embodiment) Next,
the specific configuration of the height speaker array unit 30 according to the second
embodiment will be described in detail with reference to the drawings. FIG. 7 is an explanatory
view showing the configuration of the height speaker array unit 30 according to the second
embodiment, FIG. 7 (A) is a front view, and FIG. 7 (B) is a side sectional view.
[0070]
As shown in FIG. 7A, in the height loudspeaker array unit 30 according to the second
embodiment, the arrangement surface 36 of the cabinet 35 extends in the vertical direction. The
height speaker array unit 30 according to the second embodiment is configured by arranging six
speakers 31 in a zigzag manner in the vertical direction on the arrangement surface 36 of the
cabinet 35 in a front view. ing. The height position of each speaker 31 in this case is the same
position as the height of each speaker 31 in the first embodiment.
[0071]
Then, horns 37 are formed on the arrangement surface 36 of the cabinet 35 for each of the
speakers 31 constituting the height speaker array unit 30. The horn 37 is a portion in which the
disposition surface 36 is formed in a concave shape toward the rear side of the cabinet 35, and is
inclined toward the listening position side as it goes upward. At the lower part of the horn 37,
speakers 31 are disposed so that the proper output direction D forms an elevation angle (see FIG.
09-05-2019
20
7B).
[0072]
Here, a case will be considered where a plurality of speakers 31 are disposed on a straight line
extending in the vertical direction with respect to the disposition surface 36 extending in the
vertical direction, and the speakers 31 are respectively attached such that the proper output
direction D forms an elevation angle. In such an arrangement, the sound waves from a certain
speaker 31 of the height speaker array unit 30 are interfered by the presence of the speaker 31
located immediately thereabove, and the output of the sound beam in the direction of relatively
high sound pressure is It is assumed to be inhibited.
[0073]
In this respect, as in the height speaker array unit 30 according to the second embodiment, the
respective speakers 31 are disposed in a zigzag manner with respect to the arrangement surface
36 in a front view, and the horns 37 are formed respectively, thereby the upper side Interference
can be avoided by the presence of the loudspeaker 31 located at As shown in FIG. 7B, the
speakers 31 constituting the height speaker array unit 30 have the arrangement surface 36 so
that the proper output direction D forms an elevation angle (that is, an angle upward with respect
to the horizontal direction). Are disposed below the respective horns 37. Therefore, according to
the height speaker array unit 30, the sound pressure to the front side of the device can be
reduced while increasing the sound pressure to the ceiling CE side while avoiding the
interference of the sound waves.
[0074]
Further, when arranged as shown in FIG. 7 (B), the horizontal direction which is the listening
position side is closer to the sound pressure than the proper output direction D as can be
understood from the sound pressure distribution of the speaker 31 shown in FIG. Corresponds to
the small direction of Therefore, in the speaker array device 1 according to the second
embodiment, it is possible to reduce the sound pressure in the direction (horizontal direction)
from the height speaker array unit 30 toward the listening position.
09-05-2019
21
[0075]
As described above, the speaker array device 1 according to the second embodiment includes the
height speaker array unit 30 as in the speaker array device 1 according to the first embodiment,
and the height speaker array unit 30 is configured. The audio signal input from the outside is
distributed to a plurality of speakers 31 that are arranged, and the output timing of the sound
output from the speakers is controlled to output the audio beam of the height channel from the
upper position to the listening position (See FIG. 2 (B)).
[0076]
According to the height speaker array unit 30 according to the second embodiment, as shown in
FIG. 7B, the speakers 31 constituting the height speaker array unit 30 have the proper output
direction D of elevation (that is, with respect to the horizontal direction) Is disposed on the
disposition surface 36 of the cabinet 35, so that the sound pressure to the ceiling CE side is
increased at the same time as outputting the sound beam relating to the height channel, The
sound pressure to the side listening position can be reduced, thereby enhancing the quality of
sound field expression by the height channel.
[0077]
As shown in FIG. 7A, the speakers 31 of the height speaker array unit 30 are disposed on the
arrangement surface 36 so as to draw a zigzag in a front view.
That is, a certain speaker 31 of the height speaker array unit 30 is disposed at a position
different in the horizontal direction on the arrangement surface 36 with respect to the speaker
31 located vertically upward.
Thereby, since the interference by the speaker located above can be avoided, the speaker array
device 1 according to the second embodiment can further enhance the quality of the sound field
expression by the height channel. Further, by disposing the speakers 31 of the height speaker
array unit 30 as shown in FIG. 7A, the pitch of the speakers 31 in the vertical direction can be
narrowed. With regard to the sound output from the speaker array unit 30, directivity in a high
frequency band can be secured.
[0078]
09-05-2019
22
Third Embodiment Next, an embodiment (third embodiment) different from the above-described
embodiment will be described in detail with reference to FIG. The speaker array device 1
according to the third embodiment has substantially the same basic configuration as the speaker
array device 1 according to each of the above-described embodiments, and the configuration of
the height speaker array unit 30 is different. About the same composition as embodiment
mentioned above, the explanation is omitted and the composition concerning a difference is
explained in detail.
[0079]
(Specific Configuration of Height Speaker Array Unit 30 According to Third Embodiment) Next,
the specific configuration of the height speaker array unit 30 according to the third embodiment
will be described in detail with reference to the drawings. FIG. 8 is an explanatory view showing
the configuration of the height speaker array unit 30 according to the third embodiment, FIG. 8
(A) is a front view, and FIG. 8 (B) is a side sectional view.
[0080]
As shown in FIG. 8, the height speaker array unit 30 according to the third embodiment extends
the six speakers 31 linearly in the vertical direction on the arrangement surface 36 of the cabinet
35 as in the first embodiment. The arrangement surface 36 of the cabinet 35 is positioned so as
to be positioned on the rear side of the speaker array device 1 as it goes upward (that is, it goes
farther from the listening position as it goes upward) ) Inclined.
[0081]
Further, in the height speaker array unit 30 according to the third embodiment, the speakers 31
are fixed so as to form a predetermined angle with respect to the disposition surface 36 thus
inclined.
Therefore, as shown in FIG. 8B, each of the speakers 31 constituting the height speaker array
unit 30 has a cabinet 35 so that the proper output direction D forms an elevation angle (ie, an
angle upward with respect to the horizontal direction). Is disposed on the disposition surface 36
of the
09-05-2019
23
[0082]
Thereby, in the speaker array device 1 according to the third embodiment, each speaker 31 of
the height speaker array unit 30 is inclined so as to be farther from the listening position as it
goes upward so that the proper output direction D makes an elevation angle. The sound pressure
of the sound beam directed to the ceiling CE side can be increased because the sound beam is
arranged on the arranged surface 36.
[0083]
And in 3rd Embodiment, the sound-insulation board member 38 as a blocking member is arrange
| positioned with respect to each speaker 31 of the height speaker array unit 30 (refer FIG. 8 (B)).
Each sound insulation plate member 38 is a plate-like member disposed so as to project from the
lower side of the speaker 31 and cover the lower portion of the speaker 31, and the sound
directly transmitted from the speaker 31 to the listening position Inhibit. Thereby, according to
the speaker array device 1, the sound pressure in the direction (horizontal direction) toward the
listening position with low availability can be reduced with respect to the sound beam of the
height channel. It can function effectively.
[0084]
As described above, the speaker array device 1 according to the third embodiment includes the
height speaker array unit 30 as in the speaker array device 1 according to the above-described
embodiment, and the height speaker array unit 30 is configured. The audio signal input from the
outside is distributed to a plurality of speakers 31 that are arranged, and the output timing of the
sound output from the speakers is controlled to output the audio beam of the height channel
from the upper position to the listening position (See FIG. 2 (B)).
[0085]
According to the speaker array device 1 of the third embodiment, as shown in FIG. 8B, in the
speakers 31 constituting the height speaker array unit 30, the appropriate output direction D is
an elevation angle (that is, with respect to the horizontal direction) The speaker 31 is disposed on
the disposition surface 36 of the cabinet 35 so as to make an upward angle), and each speaker
31 has a sound pressure distribution shown in FIG. At the same time, the sound pressure to the
ceiling CE side can be increased, and at the same time, the sound pressure to the listening
09-05-2019
24
position on the front side of the device can be reduced, so that the quality of the sound field
expression by the height channel can be improved.
[0086]
Further, in the speaker array device 1 according to the third embodiment, the disposition surface
36 of the cabinet 35 is inclined so as to be farther from the listening position above the
disposition surface 36, so the disposition surface 36 is By disposing each speaker 31 against the
above, it is possible to make the proper output direction D make an elevation angle, and the
sound pressure to the ceiling CE side as the entire speaker array when outputting the sound
beam related to the height channel The sound pressure to the front side of the device can be
reduced at the same time.
[0087]
And as shown to FIG. 8 (B), in the speaker array apparatus 1 which concerns on 3rd Embodiment,
the sound-insulation board member 38 as a blocking member is arrange | positioned with
respect to each speaker 31 of the height speaker array unit 30. It is a plate-like member that
protrudes from the lower side of the speaker and is disposed to cover the lower side of the
speaker, and blocks the sound directly transmitted from the speaker 31 to the listening position.
Therefore, according to the speaker array device 1, the sound pressure in the direction
(horizontal direction) toward the listening position with low availability can be reduced with
respect to the sound beam of the height channel, so that the sound beam related to the height
channel acts effectively. obtain.
[0088]
Fourth Embodiment Next, an embodiment (fourth embodiment) different from the abovedescribed embodiment will be described in detail with reference to FIG.
The speaker array device 1 according to the fourth embodiment has substantially the same basic
configuration as the speaker array device 1 according to each of the above-described
embodiments, and the configuration of the height speaker array unit 30 is different.
09-05-2019
25
About the same composition as embodiment mentioned above, the explanation is omitted and the
composition concerning a difference is explained in detail.
[0089]
(Specific Configuration of Height Speaker Array Unit 30 According to Fourth Embodiment)
Subsequently, the specific configuration of the height speaker array unit 30 according to the
fourth embodiment will be described in detail with reference to the drawings. FIG. 9 is an
explanatory view showing the configuration of the height speaker array unit 30 according to the
fourth embodiment, FIG. 9 (A) is a front view, and FIG. 9 (B) is a side sectional view.
[0090]
As shown in FIG. 9B, the arrangement surface 36 of the height speaker array unit 30 according
to the fourth embodiment extends in the vertical direction. The height speaker array unit 30
according to the fourth embodiment is configured by arranging six speakers 31 on the
arrangement surface 36 of the cabinet 35 so as to draw a zigzag in the vertical direction in a
front view. ing. The height position of each speaker 31 in this case is the same position as the
height of each speaker 31 in the first embodiment.
[0091]
Then, horns 37 are formed on the arrangement surface 36 of the cabinet 35 for each of the
speakers 31 constituting the height speaker array unit 30. The horn 37 is a portion in which the
disposition surface 36 is formed in a concave shape toward the rear side of the cabinet 35, and is
inclined toward the listening position side as it goes upward. At the lower part of the horn 37,
speakers 31 are disposed so that the proper output direction D forms an elevation angle (see FIG.
9B).
[0092]
Therefore, according to the height speaker array unit 30 according to the fourth embodiment, as
09-05-2019
26
in the second embodiment, in a front view, the speakers 31 are disposed in a zigzag manner with
respect to the disposition surface 36, and the horns 37 are individually provided. By forming,
interference can be avoided by the presence of the speaker 31 located above. As shown in FIG.
9B, the speakers 31 constituting the height speaker array unit 30 have the arrangement surface
36 so that the proper output direction D forms an elevation angle (that is, an angle upward with
respect to the horizontal direction). Are disposed below the respective horns 37. Therefore,
according to the height speaker array unit 30, the sound pressure to the front side of the device
can be reduced while increasing the sound pressure to the ceiling CE side while avoiding the
interference of the sound waves.
[0093]
When arranged as shown in FIG. 9 (B), the horizontal direction which is the listening position
side is closer to the sound pressure than the proper output direction D, as can be understood
from the sound pressure distribution of the speaker 31 shown in FIG. Corresponds to the small
direction of Therefore, in the speaker array device 1 according to the second embodiment, it is
possible to reduce the sound pressure in the direction (horizontal direction) from the height
speaker array unit 30 toward the listening position.
[0094]
Furthermore, in the fourth embodiment, the blocking member 39 is disposed on the listening
position side (front side) with respect to the disposition surface 36 of the cabinet 35, and on the
upper side than the horizontal direction of each speaker 31. , The net portion 39A. Each net
portion 39A is configured by forming a plurality of holes penetrating the blocking member 39 in
a predetermined region on the upper side of the horizontal direction of each speaker 31, and
each hole has an aperture ratio toward the upper side Are arranged to be high. As shown in FIG.
9, since the sound directly transmitted from the speaker 31 to the listening position can be
blocked by the blocking member 39, according to the speaker array device 1, the usefulness
regarding the sound beam of the height channel The sound pressure in the direction (horizontal
direction) toward the lower listening position can be reduced, so that the sound beam related to
the height channel can be effectively operated.
[0095]
As described above, the speaker array device 1 according to the fourth embodiment includes the
height speaker array unit 30 as in the speaker array device 1 according to the first embodiment,
09-05-2019
27
and the height speaker array unit 30 is configured. The audio signal input from the outside is
distributed to a plurality of speakers 31 that are arranged, and the output timing of the sound
output from the speakers is controlled to output the audio beam of the height channel from the
upper position to the listening position (See FIG. 2 (B)).
[0096]
According to the height speaker array unit 30 according to the fourth embodiment, as shown in
FIG. 9B, the speakers 31 constituting the height speaker array unit 30 have the appropriate
output direction D at the elevation angle (that is, with respect to the horizontal direction). Is
disposed on the disposition surface 36 of the cabinet 35, so that the sound pressure to the ceiling
CE side is increased at the same time as outputting the sound beam relating to the height
channel, The sound pressure to the side listening position can be reduced, thereby enhancing the
quality of sound field expression by the height channel.
[0097]
As shown in FIG. 9A, the speakers 31 of the height speaker array unit 30 are arranged on the
arrangement surface 36 so as to draw a zigzag in a front view.
That is, a certain speaker 31 of the height speaker array unit 30 is disposed at a position
different in the horizontal direction on the arrangement surface 36 with respect to the speaker
31 located vertically upward.
Thereby, since the interference by the speaker located above can be avoided, the speaker array
device 1 according to the fourth embodiment can further enhance the quality of the sound field
expression by the height channel. Further, since the pitch of the speakers 31 in the vertical
direction can be narrowed, according to the speaker array device 1, directivity in the high
frequency band can be secured for the audio output from the height speaker array unit 30.
[0098]
Further, in the speaker array device 1 according to the fourth embodiment, the blocking member
39 is disposed on the placement surface 36 of the height speaker array unit 30, and the blocking
member 39 is a component of the height speaker array unit 30. A net portion 39A is provided at
09-05-2019
28
a position corresponding to each speaker 31 (see FIG. 9B). Therefore, according to the speaker
array device 1, the sound pressure in the direction (horizontal direction) toward the listening
position with low availability can be reduced with respect to the sound beam of the height
channel, so that the sound beam related to the height channel acts effectively. obtain.
[0099]
Fifth Embodiment An embodiment (fifth embodiment) different from the above-described
embodiment will be described in detail with reference to FIG. The speaker array device 1
according to the fifth embodiment has substantially the same basic configuration as the speaker
array device 1 according to each of the above-described embodiments, and the configuration of
the height speaker array unit 30 is different. About the same composition as embodiment
mentioned above, the explanation is omitted and the composition concerning a difference is
explained in detail.
[0100]
(Specific Configuration of Height Speaker Array Unit 30 According to Fifth Embodiment) As
shown in FIG. 10, in the height speaker array unit 30 according to the fifth embodiment, the
cabinet 35 is disposed as in the first embodiment. On the surface 36, six speakers 31 are
arranged to extend linearly in the vertical direction, and the arrangement surface 36 of the
cabinet 35 is positioned on the rear side of the speaker array device 1 as it goes upward. (That is,
as it goes upward, the farther it is from the listening position).
[0101]
In the height speaker array unit 30 according to the fifth embodiment, the speakers 31 are
fixedly provided at a predetermined angle with respect to the curved arrangement surface 36.
Therefore, as shown in FIG. 10, each of the speakers 31 constituting the height speaker array
unit 30 is provided with the cabinet 35 such that the proper output direction D forms an
elevation angle (ie, an angle upward with respect to the horizontal direction). It is disposed on the
surface 36. Since each speaker 31 is disposed with respect to the curved disposition surface 36,
the elevation angle formed by the proper output direction D of each speaker 31 is disposed to be
larger as the proper output direction D located below is increased. Ru.
09-05-2019
29
[0102]
As a result, in the speaker array device 1 according to the fifth embodiment, each speaker 31 of
the height speaker array unit 30 is properly arranged in the appropriate output direction D on
the disposition surface 36 that is curved to be farther from the listening position as it goes
upward. Can be arranged to form an elevation angle, so that the sound pressure toward the
listening position can be reduced while increasing the sound pressure toward the ceiling CE.
[0103]
As described above, the speaker array device 1 according to the fifth embodiment includes the
height speaker array unit 30 similarly to the speaker array device 1 according to the abovedescribed embodiment, and the height speaker array unit 30 is configured. The audio signal
input from the outside is distributed to a plurality of speakers 31 that are arranged, and the
output timing of the sound output from the speakers is controlled to output the audio beam of
the height channel from the upper position to the listening position (See FIG. 2 (B)).
[0104]
According to the speaker array device 1 of the fifth embodiment, as shown in FIG. 10, in the
speakers 31 constituting the height speaker array unit 30, the proper output direction D is an
elevation angle (that is, an upward angle with respect to the horizontal direction) , And each
speaker 31 has the sound pressure distribution shown in FIG. 3, and therefore, when outputting
the sound beam relating to the height channel, At the same time as the sound pressure on the CE
side is increased, the sound pressure to the listening position on the front side of the device can
be reduced, thereby enhancing the quality of the sound field expression by the height channel.
[0105]
Further, in the speaker array device 1 according to the fifth embodiment, the disposition surface
36 of the cabinet 35 is curved so as to be farther from the listening position above the
disposition surface 36. By disposing each speaker 31 against the above, it is possible to make the
proper output direction D make an elevation angle, and the sound pressure to the ceiling CE side
as the entire speaker array when outputting the sound beam related to the height channel The
sound pressure to the front side of the device can be reduced at the same time.
[0106]
Furthermore, according to the speaker array device 1 according to the fifth embodiment, since
the speakers 31 are disposed on the disposition surface 36 so as to make the elevation angle
larger toward the lower side of the height speaker array unit 30, When outputting such an audio
09-05-2019
30
beam, the sound pressure to the ceiling CE side can be increased at the same time as the speaker
31 as a whole, and at the same time the sound pressure to the front side of the device can be
reduced. It can be further enhanced.
[0107]
Sixth Embodiment An embodiment (sixth embodiment) different from the above-described
embodiment will be described in detail with reference to FIG.
The speaker array device 1 according to the sixth embodiment has substantially the same basic
configuration as the speaker array device 1 according to each of the above-described
embodiments, and the configuration of the height speaker array unit 30 is different.
About the same composition as embodiment mentioned above, the explanation is omitted and the
composition concerning a difference is explained in detail.
[0108]
(Specific Configuration of Height Speaker Array Unit 30 According to Sixth Embodiment)
Subsequently, the specific configuration of the height speaker array unit 30 according to the
sixth embodiment will be described in detail with reference to the drawings.
FIG. 11 is a side sectional view showing the configuration of the height speaker array unit 30
according to the sixth embodiment.
[0109]
As in the second embodiment, six height loudspeaker array units 30 according to the sixth
embodiment are provided so as to form a zigzag in the vertical direction on the arrangement
surface 36 of the cabinet 35 in a front view. It is comprised by arrange | positioning the speaker
31. FIG.
09-05-2019
31
The height position of each speaker 31 in this case is the same position as the height of each
speaker 31 in the first embodiment.
[0110]
As shown in FIG. 11, the disposition surface 36 of the cabinet 35 is curved so as to be positioned
on the rear side of the speaker array device 1 as it goes upward (that is, as it goes away from the
listening position as it goes upward). ing.
[0111]
Further, in the height speaker array unit 30 according to the sixth embodiment, the speakers 31
are fixed so as to form a predetermined angle with respect to the disposition surface 36 thus
inclined.
Therefore, as shown in FIG. 11, each of the speakers 31 constituting the height speaker array
unit 30 is provided with the cabinet 35 so that the proper output direction D forms an elevation
angle (ie, an angle upward with respect to the horizontal direction). It is disposed on the surface
36.
And since each speaker 31 is arrange | positioned with respect to the curved arrangement |
positioning surface 36, it arranges so that the elevation angle which the appropriate output
direction D of each speaker 31 makes becomes large about the appropriate output direction D
located below. It will be set up.
[0112]
As described above, in the sixth embodiment, the arrangement surface 36 of the cabinet 35 is
configured by arranging six speakers 31 so as to draw a zigzag in the vertical direction in a front
view. Therefore, each speaker 31 can be fixed to the disposition surface 36 in a state in which
the elevation angle formed by the appropriate output direction D of each speaker 31 is larger
than that in the fifth embodiment. Therefore, according to the speaker array device 1 of the sixth
embodiment, the sound pressure of the sound beam to the ceiling CE side can be increased while
the sound pressure to the listening position side can be reduced as compared with the fifth
09-05-2019
32
embodiment. Can.
[0113]
Further, in the speaker array device 1 according to the sixth embodiment, the speakers 31 of the
height speaker array unit 30 have the proper output direction D on the disposition surface 36
which is curved so as to be farther from the listening position as it goes upward. Since the
elevation speaker array unit 30 is disposed at an elevation angle, the sound pressure of the
sound beam directed to the ceiling CE can be increased and the sound pressure directed to the
listening position can be reduced.
[0114]
As described above, the speaker array device 1 according to the sixth embodiment includes the
height speaker array unit 30 as in the speaker array device 1 according to the above-described
embodiment, and the height speaker array unit 30 is configured. The audio signal input from the
outside is distributed to a plurality of speakers 31 that are arranged, and the output timing of the
sound output from the speakers is controlled to output the audio beam of the height channel
from the upper position to the listening position (See FIG. 2 (B)).
[0115]
According to the speaker array device 1 of the sixth embodiment, as shown in FIG. 11, the
speakers 31 constituting the height speaker array unit 30 have the proper output direction D as
an elevation angle (ie, an upward angle with respect to the horizontal direction) , And each
speaker 31 has the sound pressure distribution shown in FIG. 3, and therefore, when outputting
the sound beam relating to the height channel, At the same time as the sound pressure on the CE
side is increased, the sound pressure to the listening position on the front side of the device can
be reduced, thereby enhancing the quality of the sound field expression by the height channel.
[0116]
Moreover, in the speaker array device 1 according to the sixth embodiment, the disposition
surface 36 of the cabinet 35 is curved so as to be farther from the listening position above the
disposition surface 36, so the disposition surface 36 By disposing each speaker 31 against the
above, it is possible to make the proper output direction D make an elevation angle, and the
sound pressure to the ceiling CE side as the entire speaker array when outputting the sound
beam related to the height channel The sound pressure to the front side of the device can be
reduced at the same time.
09-05-2019
33
[0117]
And, according to the speaker array device 1 according to the sixth embodiment, since each
speaker 31 is disposed on the disposition surface 36 so as to make the elevation angle larger
toward the lower side of the height speaker array unit 30, When outputting such an audio beam,
the sound pressure to the ceiling CE side can be increased at the same time as the speaker 31 as
a whole, and at the same time the sound pressure to the front side of the device can be reduced.
It can be further enhanced.
[0118]
Furthermore, in the speaker array device 1 according to the sixth embodiment, the speakers 31
of the height speaker array unit 30 are disposed on the disposition surface 36 so as to draw a
zigzag in a front view.
That is, a certain speaker 31 of the height speaker array unit 30 is disposed at a position
different in the horizontal direction on the arrangement surface 36 with respect to the speaker
31 located vertically upward.
Thereby, since the interference by the speaker located above can be avoided, the speaker array
device 1 according to the sixth embodiment has a large elevation angle in the appropriate output
direction D in each speaker 31 compared to the fifth embodiment. The quality of the sound field
expression by the height channel can be further enhanced.
Further, since the pitch of the speakers 31 in the vertical direction can be narrowed, according to
the speaker array device 1, directivity in the high frequency band can be secured for the audio
output from the height speaker array unit 30.
[0119]
Seventh Embodiment Next, an embodiment (seventh embodiment) different from the abovedescribed embodiment will be described in detail with reference to FIG.
The speaker array device 1 according to the seventh embodiment has substantially the same
09-05-2019
34
basic configuration as the speaker array device 1 according to each of the above-described
embodiments, and the configuration of the height speaker array unit 30 is different.
About the same composition as embodiment mentioned above, the explanation is omitted and the
composition concerning a difference is explained in detail.
[0120]
(Specific Configuration of Height Speaker Array Unit 30 According to Seventh Embodiment)
Subsequently, the specific configuration of the height speaker array unit 30 according to the
seventh embodiment will be described in detail with reference to the drawings. FIG. 12 is a side
sectional view showing the configuration of the height speaker array unit 30 according to the
seventh embodiment.
[0121]
As in the second embodiment, six height loudspeaker array units 30 according to the seventh
embodiment are provided so as to form a zigzag in the vertical direction on the arrangement
surface 36 of the cabinet 35 in a front view. It is comprised by arrange | positioning the speaker
31. FIG. The height position of each speaker 31 in this case is the same position as the height of
each speaker 31 in the first embodiment.
[0122]
Then, horns 37 are formed on the arrangement surface 36 of the cabinet 35 for each of the
speakers 31 constituting the height speaker array unit 30. The horn 37 is a portion in which the
disposition surface 36 is formed in a concave shape toward the rear side of the cabinet 35, and is
inclined toward the listening position side as it goes upward. At the lower part of the horn 37,
speakers 31 are respectively disposed so that the proper output direction D forms an elevation
angle (see FIG. 12).
[0123]
09-05-2019
35
Therefore, according to the height speaker array unit 30 according to the seventh embodiment,
as in the second embodiment, in a front view, the speakers 31 are disposed in a zigzag manner
with respect to the disposition surface 36, and the horns 37 are individually provided. By
forming, interference can be avoided by the presence of the speaker 31 located above. As shown
in FIG. 12, each of the speakers 31 constituting the height speaker array unit 30 has each horn
on the arrangement surface 36 such that the proper output direction D forms an elevation angle
(ie, an angle upward with respect to the horizontal direction). Located at the bottom of 37.
Therefore, according to the height speaker array unit 30, the sound pressure to the front side of
the device can be reduced while increasing the sound pressure to the ceiling CE side while
avoiding the interference of the sound waves.
[0124]
Furthermore, in the seventh embodiment, the sound insulation plate member 38 is integrally
formed with the horn 37 by extending the upper end portion of each horn 37. Each sound
insulation plate member 38 is a plate-like member disposed so as to project from the lower side
of the speaker 31 and to cover the lower side of the speaker 31 as in the third embodiment. It
blocks speech transmitted directly to the listening position. Thereby, according to the speaker
array device 1, the sound pressure in the direction (horizontal direction) toward the listening
position with low availability can be reduced with respect to the sound beam of the height
channel. It can function effectively.
[0125]
As described above, the speaker array device 1 according to the seventh embodiment includes
the height speaker array unit 30 as in the speaker array device 1 according to the abovedescribed embodiment, and the height speaker array unit 30 is configured. The audio signal
input from the outside is distributed to a plurality of speakers 31 that are arranged, and the
output timing of the sound output from the speakers is controlled to output the audio beam of
the height channel from the upper position to the listening position (See FIG. 2 (B)).
[0126]
According to the speaker array device 1 of the seventh embodiment, as shown in FIG. 12, the
speakers 31 constituting the height speaker array unit 30 have the proper output direction D as
an elevation angle (ie, an upward angle with respect to the horizontal direction) , And each
speaker 31 has the sound pressure distribution shown in FIG. 3, and therefore, when outputting
the sound beam relating to the height channel, At the same time as the sound pressure on the CE
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36
side is increased, the sound pressure to the listening position on the front side of the device can
be reduced, thereby enhancing the quality of the sound field expression by the height channel.
[0127]
Then, as shown in FIG. 12, in the speaker array device 1 according to the seventh embodiment, a
sound insulation plate member 38 as a blocking member is integrated with each horn 37 for
each speaker 31 of the height speaker array unit 30. It is formed and disposed to project from
below the speaker and to cover the bottom of the speaker.
In order to block the sound directly transmitted from the speaker 31 to the listening position,
each sound insulating plate member 38 according to the speaker array device 1 is directed to the
listening position of low utility with respect to the sound beam of the height channel. Since the
sound pressure in the (horizontal direction) can be reduced, the sound beam related to the height
channel can be effectively operated.
[0128]
Furthermore, in the speaker array device 1 according to the seventh embodiment, the speakers
31 of the height speaker array unit 30 are arranged on the arrangement surface 36 so as to draw
a zigzag in a front view.
That is, a certain speaker 31 of the height speaker array unit 30 is disposed at a position
different in the horizontal direction on the disposition surface 36 with respect to the speaker 31
located vertically upward, and the speaker 31 positioned upward Since the interference due to
the noise can be avoided, the speaker array device 1 according to the sixth embodiment can
further enhance the quality of the sound field expression by the height channel. Further, since
the pitch of the speakers 31 in the vertical direction can be narrowed, according to the speaker
array device 1, directivity in the high frequency band can be secured for the audio output from
the height speaker array unit 30.
[0129]
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37
As mentioned above, although this invention was demonstrated based on embodiment, this
invention is not limited at all to embodiment mentioned above, A various improvement change is
possible in the range which does not deviate from the meaning of this invention. For example, in
the embodiment described above, the speaker array device 1 includes a speaker array unit 20 for
performing sound field expression in the horizontal direction and a height speaker array unit 30
for performing sound field expression in the height (vertical) direction. Is included in the device
main body 1A, but the present invention is not limited to this aspect. For example, a
configuration having only the height speaker array unit 30 is also possible.
[0130]
In the embodiment described above, the height speaker array unit 30 is configured by arranging
six speakers 31 in the vertical direction, but the number of speakers 31 that constitute the height
speaker array unit 30 is the same. It is not limited to It can be suitably changed in accordance
with the requirements such as the performance of sound field expression in the speaker array
device 1.
[0131]
In the embodiment described above, the height speaker array unit 30 has a configuration in
which the speakers 31 are arranged in a straight line extending in the vertical direction (for
example, FIG. 6A) or a zigzag in the vertical direction. As illustrated, each speaker 31 is disposed
(for example, FIG. 7A or the like), but the present invention is not limited to this embodiment. As
far as the horizontal position of the arrangement surface 36 is concerned, various aspects can be
adopted as long as the position of the speaker 31 is different from the position of the speaker 31
located immediately above it.
[0132]
For example, it is possible to arrange the speakers 31 in the vertical direction while using three
or more positions in the horizontal direction on the arrangement surface 36. Specifically, an
aspect in which three or more positions are used in the horizontal direction on the disposition
surface 36 will be described. For example, as shown in FIG. 13, the pattern for forming the
speaker 31 and the cabinet 35 gradually downward from the horizontal direction one side to the
other side of the arrangement surface 36 extends in the vertical direction of the arrangement
09-05-2019
38
surface 36. It is also possible to configure it to repeat. Further, as shown in FIG. 14, it is possible
to form the plurality of speakers 31 and the plurality of horns 37 so as to draw a zigzag in the
vertical direction using three or more positions in the horizontal direction on the arrangement
surface 36. It is. Even with the arrangement of the speakers 31 in the height speaker array unit
30 shown in FIGS. 13 and 14, the pitch of the speakers 31 in the vertical direction can be
narrowed. Therefore, according to the speaker array device 1, the height speaker array unit 30
can be used. The directivity in the high frequency band can be secured for the audio output from
the.
[0133]
In each of the embodiments described above, the speaker array device 1 is an example of the
speaker array device of the present invention. The cabinet 35 is an example of the device casing
of the present invention. The arrangement surface 36 is an example of the arrangement surface
of the present invention. The height speaker array unit 30 is an example of the speaker array of
the present invention. The speaker 31 is an example of the speaker of the present invention. The
proper output direction D is an example of the proper output direction of the present invention.
The sound insulation board member 38 and the inhibition member 39 are an example of the
inhibition member of the present invention. And the noise insulation board member 38 is an
example of the noise insulation board of this invention, and the net | network part 39A is an
example of the net | network part of this invention.
[0134]
DESCRIPTION OF SYMBOLS 1 Speaker array apparatus 1A apparatus main body 10 system
control part 15 beam formation part 30 height speaker array unit 31 speaker 35 cabinet 36
arrangement surface 38 sound insulation board member 39 inhibition member 39A net part D
appropriate output direction
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39
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