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JP2008035133

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DESCRIPTION JP2008035133
A speaker device suitable for reproducing digital content transmitted from a digital media server
according to a user's environment is provided. A speaker device includes a receiving unit for
receiving an audio signal transmitted in the form of a predetermined signal from outside, an
amplifier for amplifying a signal level of the audio signal received by the receiving unit, and an
amplifier Speakers 3 to 6 for reproducing the audio signal amplified by 12, the power supply
terminal 9 connectable to a power supply terminal for illumination provided on the ceiling, and
at least the sound emitting surface of the speakers 3 to 6 being separated from the ceiling And a
cable 8 which is hooked to the ceiling in a state where the sound emitting surfaces of the
speakers 3 to 6 are directed substantially in the direction of the ceiling when the cable 8 is
hooked to the ceiling. [Selected figure] Figure 1
Audio apparatus and speaker apparatus
[0001]
The present invention relates to a speaker device attachable to an upper position such as a
ceiling and an audio device provided with the speaker device.
[0002]
In recent years, multi-channel surround systems are becoming popular in general homes.
When a multi-channel surround system is used, the user can enjoy in-home sound effects such as
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1
cinemas and concert halls. However, as is well known, in the multi-channel surround system, it is
necessary to arrange the speakers according to the shape of the room, the listening position of
the listener, etc., and there is a problem that the installation is very troublesome. Therefore, in
Patent Document 1, an array speaker and illumination capable of outputting a plurality of beams
by controlling directivity as a speaker device capable of obtaining an optimum sound field effect
regardless of the shape of a room in which the speaker is installed and the viewing position of
the user Are disclosed as being integrated and attached to a ceiling to create virtual speakers in
any direction. JP 2005-12765 A
[0003]
However, since the speaker device of Patent Document 1 requires a very large number of
speakers and a control device for performing complicated control, it is expensive and requires a
large-scale installation, and is not suitable for use in general homes. Met. In addition, since the
control is precise, there is also a problem that when the room conditions are changed or the
viewing position changes after being set once, a sense of localization can not be obtained. Also, in
recent years, DLNA (Digital Living Network Alliance) has been proposed as a specification for
easily exchanging digital contents such as music / still pictures / moving pictures in a home
network. Therefore, in an audio apparatus positioned as a digital media player, a speaker
apparatus suitable for reproducing digital content from various digital media servers in
accordance with the user's environment is required. It was being done. In view of the above, it is
an object of the present invention to provide a speaker apparatus suitable for reproducing digital
content transmitted from a digital media server in accordance with the user's environment.
Another object of the present invention is to provide an audio apparatus with a simple
configuration and a small loss of localization due to the movement of the room conditions and
the viewing position.
[0004]
In order to achieve the above object, an audio apparatus according to the present invention
comprises: media reproduction means for reproducing a medium; transmission means capable of
transmitting an audio signal reproduced by the medium reproduction means in a predetermined
signal form; An audio main unit comprising: a first receiving means for receiving a signal; and a
main control means for controlling the media reproduction means according to a command
signal received by the first receiving means; and the transmitting means A second receiving
means for receiving an audio signal transmitted in a predetermined signal form; a first amplifying
means for amplifying a signal level of the audio signal received by the second receiving means; A
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speaker for reproducing an audio signal amplified by the amplification means, a power supply
terminal connectable to a power supply terminal for illumination provided at an upper position,
and at least the above-mentioned speed And a hooking means for hooking to the upper position
in a state of being separated from the upper position, and when the hooking means is hooked to
the upper position by the hooking means, the sound emitting surface of the speaker is
substantially And a speaker device disposed to face obliquely upward. In the audio apparatus
according to the present invention, illumination means disposed integrally with the speaker so
that the speaker device illuminates the lower side of the speaker, and sub control means for
performing on / off control of the illumination means , And the sub-control means performs on /
off control of the illumination means according to a command signal received by the second
reception means.
[0005]
The audio device of the present invention is characterized in that the speaker device includes a
power supply terminal for supplying power to the lighting device, and the lighting device is
configured to be attachable. The audio apparatus according to the present invention further
comprises: a second amplification means for amplifying a part of the audio signal reproduced by
the media reproduction means; and a main speaker for reproducing the audio signal amplified by
the second amplification means. It is characterized by having. Further, in the audio apparatus
according to the present invention, the speaker device is provided with a plurality of the
speakers, and the main control means is configured to reproduce predetermined reproduction
signals in the plurality of speakers of the speaker device. It is characterized in that control of the
media reproduction means is performed. In the audio device of the present invention, in the
speaker device, four speakers are arranged in a circle at regular intervals, and the main control
means is positioned in a direction substantially orthogonal to the direction of the listener. The
media reproduction means is controlled such that predetermined reproduction signals are
reproduced respectively from the individual speakers and the two speakers positioned in a
substantially parallel direction.
[0006]
The speaker apparatus according to the present invention comprises: receiving means for
receiving an audio signal transmitted in the form of a predetermined signal from the outside;
amplifying means for amplifying the signal level of the audio signal received by the receiving
means; A speaker for reproducing an audio signal amplified by the power supply terminal, a
power supply terminal connectable to a power supply terminal for illumination provided at the
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upper position, and at least a sound emitting surface of the speaker separated from the upper
position A locking means for locking the speaker at the upper position, and the sound emitting
surface of the speaker is disposed so as to face substantially diagonally upward when locked at
the upper position by the locking means It is characterized by Further, the speaker device
according to the present invention is provided with a control means which is capable of receiving
the command signal from the remote commander by the receiving means, and controlling the
amplification level of the amplifying means in accordance with the command signal received by
the receiving means. It is characterized by Further, the speaker device according to the present
invention includes an illumination unit disposed integrally with the speaker so as to illuminate
the lower side of the speaker, and the control unit is configured such that the light amount level
of the illumination unit falls below a certain level. The controller is controlled to stop the audio
output from the speaker after a predetermined time has elapsed.
[0007]
According to the speaker apparatus of the present invention, the sound emitting surface of the
speaker is attached at a substantially obliquely upper position so that direct sound does not
reach the listener as much as possible. You can watch it. That is, the listener can be provided with
a background listening environment. Further, the speaker device according to the present
invention can adjust the volume of the speaker interlockingly with the light amount of the
illumination means by providing the illumination means integrally, so for example, according to
the brightness of the illumination It becomes possible to provide a sound environment. Also, the
audio device of the present invention is a single speaker device or a separately provided speaker
device configured such that the sound emitting surface of the speaker as described above is
directed substantially diagonally upward, and direct sound does not reach the listener as much as
possible. By reproducing an audio signal in combination with a speaker, a feeling of sound field
can be obtained in a wide range of a room without performing complicated control and the like.
Moreover, by utilizing the reflection of the ceiling and the wall which is the upper position, an
audio device in which the loss of the sense of localization due to the movement of the room
conditions and the viewing position can be realized is small.
[0008]
Hereinafter, embodiments of the present invention will be described with reference to the
drawings. FIG. 1 is a view showing an appearance configuration of a speaker device according to
a first embodiment of the present invention, where (a) is a side view and (b) is a plan view. The
speaker device 1 shown in FIG. 1 has a structure in which illumination is integrated. For this
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reason, the lighting cabinet 7 is integrally attached so that the lower side of the speaker cabinet 2
may be illuminated. In the speaker cabinet 2, as shown in FIG. 1 (b), four speakers 3 to 6 are
attached to a ceiling which is substantially circular at regular intervals, and the speaker device 1
is located above the speakers. When attached, it is attached to face the ceiling at an angle of
approximately 45 degrees. The speaker cabinet 2 also accommodates an amplifier for driving
each of the speakers 3 to 6 and a receiving device for receiving an audio signal as described
later. A cable 8 is attached to the upper surface of the speaker cabinet 2, and a power terminal 9
connectable to a power supply terminal for illumination provided on a ceiling is attached to the
tip of the cable 8. The power supply terminal 9 also functions as a hooking means when the
speaker device 1 is attached to the ceiling. In addition, when the speaker device 1 is attached to
the ceiling via the cable 8, the sound emitting surface of each of the speakers 3 to 6 can be
separated from the ceiling compared to the case where the speaker device 1 is directly attached
to the ceiling. It can be done. Although the speakers 3 to 6 are accommodated in one speaker
cabinet 2 in the present embodiment, the cabinet may be divided for each of the speakers 3 to 6.
Although not shown, the lighting cabinet 7 is provided with lighting fixtures (fluorescent lights,
incandescent lights, etc.) for illuminating a room.
[0009]
FIG. 2 is a block diagram showing an internal configuration of the speaker device 1 shown in FIG.
In FIG. 2, the receiving unit 11 is configured to be able to receive an audio signal transmitted
from a digital media server (DMS), which is a sound source device, according to the DLNA
standard. Further, the receiving unit 11 is configured to be able to receive a command signal
transmitted from the remote commander 16 in accordance with the standard of ECHONET
(Energy Conservation and Home Care Network). Examples of the DMS include a personal
computer, a set top box, a digital camera and a video camera, and a multifunctional mobile
phone. The amplifier 12 amplifies the signal level of the audio signal input from the receiving
unit 11 based on the control signal from the control unit 13 and outputs the amplified signal
level to each of the speakers 3 to 6. The control unit 13 performs level control of the amplifier
12 and illumination control of the illumination circuit 14 based on the command signal received
by the receiving unit 11. The lighting circuit 14 performs lighting control and light amount
control of the lighting device 15 based on the control of the control circuit 13. Although the
remote control signal is received by the reception unit 11 in the present embodiment, a remote
control reception unit that receives a command signal from the remote commander 16 may be
separately provided. It is also possible to use infrared radiation for transmission to and from the
remote commander.
[0010]
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FIG. 3 is a view showing how noise is emitted when the speaker device 1 of the present
embodiment is attached to a ceiling. When the speaker device 1 of the present embodiment is
attached to the ceiling, the speakers 3 to 6 of the speaker device 1 emit radiation from the
speakers 3 to 6 because the sound emitting surface faces the ceiling at an angle of approximately
45 degrees. Much of the energy of the emitted sound is reflected by the ceiling 21, the wall 22
and the floor 23 to reach the listener U. Thereby, the sound which reaches the listener U directly
from the speakers 3-6 becomes extremely small, and the listener U can listen to the sound
without being aware of the positions of the speakers 3-6. That is, the listener U can be provided
with a background listening environment. Further, in the speaker device 1 of the present
embodiment, the control unit 13 is configured to be able to perform the level control of the
amplifier 12 and the light amount control of the lighting device 15, so the light amount level
transmitted from the remote commander 16 If the amplification level of the amplifier 12 is
controlled in conjunction with the command signal of (1), it is possible to adjust the volume of
the reproduction sound reproduced from the speakers 3 to 6 in synchronization with the
brightness of the lighting device 15. Furthermore, when the listener darkens the light to a certain
level or more in order to go to bed, in addition to the control to lower the volume of the speaker
in conjunction with the light intensity of the light, the volume level is gradually lowered with
time. It is also possible to perform various controls and control so that the reproduced sound
from the speakers 3 to 6 is turned off after a predetermined time has elapsed. In this way, the
listener can provide a sound environment matched to, for example, the brightness of the
illumination without regard to the volume of the speaker.
[0011]
Next, a speaker device according to a second embodiment of the present invention will be
described. FIG. 4 is a view showing an appearance configuration of a speaker device according to
a second embodiment of the present invention, (a) is an appearance perspective view, and (b) is a
cross-sectional view. The same parts as in FIG. 1 are assigned the same reference numerals and
detailed explanations thereof will be omitted. While the speaker apparatus 1 shown in FIG. 1 has
a structure in which the lighting apparatus is integrated, the speaker apparatus 31 shown in
FIGS. 4 (a) and 4 (b) separately uses the lighting apparatus 41. It is characterized in that it is
configured. That is, also in the speaker device 31 shown in FIGS. 4A and 4B, when the four
speakers 3 to 6 are substantially circular and the speaker device 31 is attached to the ceiling,
each of the speakers 3 to 6 is It is attached to face the ceiling. Further, in the speaker cabinet 32,
an amplifier 12 (not shown) for driving the speakers 3 to 6 and a receiving device 11 for
receiving an audio signal and a command signal are also accommodated.
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[0012]
In this case, a power supply terminal 9 connectable to a power supply terminal for illumination
provided on the ceiling is provided on the upper surface of the speaker cabinet 32, and the lower
surface of the speaker cabinet 32 is shown in FIG. As shown, a power supply terminal 33 to
which the power supply terminal 42 of the lighting device 41 can be connected is provided. That
is, the speaker device 31 is configured such that the lighting device 41 can be attached to the
lower surface side of the speaker cabinet 32 and power can be supplied to the lighting device 41.
Therefore, if the power supply terminal 9 of the speaker device 31 of the present embodiment is
connected to the power supply terminal 24 of the ceiling 21, the lighting apparatus 41 can be
attached to the lower surface side of the speaker device 31 directly attached to the ceiling.
Therefore, it becomes possible to use the lighting equipment 41 currently used as it is, or to
allow the user to attach a desired lighting equipment. At this time, if the lighting apparatus 41
attached to the speaker apparatus 31 is of a size larger than the speaker apparatus 31 as shown
in FIG. 4B, the speaker apparatus 31 can not be seen from the floor surface. There is no loss of
the design of the product.
[0013]
FIG. 5 shows another configuration example of the speaker device according to the second
embodiment. The same parts as those in FIG. 4 are assigned the same reference numerals and
detailed explanations thereof will be omitted. As shown in FIG. 5, when the size of the speaker
device 31 is larger than the lighting device 41, the speakers 3 to 6 can be installed apart from
the ceiling 21 compared to the speaker device 31 shown in FIG. It becomes possible to give a
spread to the sound outputted from. The configuration of the speaker device described above is
merely an example, and the present invention is applied to a speaker device having a structure in
which each sound emitting surface of a plurality of speakers is directed toward the ceiling. It is
possible. In the present embodiment, the speaker device 1 is described as being provided with
four speakers, but the speaker device of the present invention can be configured as long as at
least one speaker is used.
[0014]
Next, an embodiment of the audio device of the present invention will be described. FIG. 6 is a
diagram showing an internal configuration of the audio apparatus of the present embodiment.
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The same parts as in FIG. 1 are assigned the same reference numerals and detailed explanations
thereof will be omitted. The audio device shown in FIG. 6 includes an audio main body 51 and a
speaker device 1. The audio main unit 51 includes a media reproduction unit (media
reproduction unit) 52, a transmission unit (transmission unit) 53, an amplifier (second
amplification unit) 54, main speakers 55a and 55b as front speakers, and a control unit (main
control unit 56, a receiving unit 57 (first receiving means), a memory (storage means) 58, and a
remote commander 59. The media reproduction unit 52 reproduces content (audio data)
recorded in various media such as a CD (Compact Disc), an MD (Mini Disc), a DVD (Digital
Versatile Disc), and a memory storage medium. In addition, the media reproduction unit 52
generates a head related transfer function (HRTF) of any head related information selected from
the plurality of head related information stored in the memory 58 for the audio signal
reproduced from the medium. It is configured to be able to output based on signal processing
based on the above.
[0015]
The transmitting unit 53 converts the audio signal sent from the media playback unit 52 into a
bit stream signal conforming to the DLNA standard and transmits it. The amplifier 54 amplifies
the signal level of the audio signal sent from the media playback unit 52, and outputs the
amplified signal to the main speakers 55a and 55b. The main speakers 55a and 55b convert the
audio signal from the amplifier 54 into an audible sound and output it. The control unit 56
performs various controls such as the media reproduction unit 52 and the amplifier 54 based on
the command signal received by the reception unit 57. The receiving unit 57 receives a
command signal transmitted from the remote commander 59 and outputs the command signal to
the control unit 56. The memory 58 is a non-volatile memory, and stores various kinds of
information necessary for control and a plurality of head-related information based on the headrelated transfer function in advance. The main speakers 55a and 55b may be formed separately
from the audio main body 51. It goes without saying that the amplifier 54 is required for each of
the speakers 55a and 55b when the speakers 55a and 55b are separately configured including
the amplifier. On the other hand, the speaker device 1 has an appearance configuration as shown
in FIG. 1, and inside thereof, the receiving unit (second receiving means) 11, the amplifier (first
amplifying means) 12, the control unit (sub Control means) 13, a lighting circuit 14, and a
lighting device 15 are provided.
[0016]
FIG. 7 is a view showing the arrangement of the speakers in the audio device of the present
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embodiment and the sound emission state, and in the audio device of the present embodiment,
the main speaker 55 of the audio main body 51 is placed in front of the listener U. It arrange |
positions and it is made to attach the speaker apparatus 1 to a ceiling. In the audio apparatus of
the present embodiment configured as described above, the listener U performs a predetermined
operation on the remote commander 59 when it is desired to perform background music like
music reproduction. Then, the control unit 56 having received the command signal from the
remote commander 59 through the receiving unit 57 is the same audio signal in the plurality of
speakers 3 to 6 of the speaker device 1 or the left channel signal (hereinafter referred to as , L
signal) and the right channel signal (hereinafter referred to as R signal) are controlled so as to be
alternately reproduced. The audio signal reproduced by the media reproduction unit 52 is
transmitted from the transmission unit 53. The transmission signal is received by the receiving
unit 11 of the speaker device 1 and reproduced from the speakers 3 to 6 through the amplifier
12. As described above, since the sound emitting surface of each of the speakers 3 to 6 of the
speaker device 1 is directed toward the ceiling at an angle of approximately 45 degrees, the
sound emitted from each of the speakers 3 to 6 is Much of the energy is reflected by the ceiling
21, the wall 22 and the floor 23 to reach the listener U, and the sound from the speakers 3 to 6
directly to the listener U is extremely small. It is arranged to be able to listen to the sound
without being aware of the position of 6.
[0017]
Therefore, the same audio signal from each of the speakers 3 to 6 or the positional relationship
between each of the speakers 3 to 6 and the listener U as shown in FIG. In this case, if L signals
are output by the speakers 4 and 5 and R signals are output by the speakers 3 and 6, almost the
same feeling of sound field can be obtained regardless of where the listener U is in the room. It is
possible to provide an optimal listening environment for background music playback. Further, in
the audio device of the present embodiment, when it is desired to perform surround
reproduction, the listener U performs a predetermined operation on the remote commander 59
as described above. Then, the control unit 56 having received the command signal from the
remote commander 59 via the receiving unit 57 controls the media playback unit 52. Thereby,
the media reproduction unit 52 reproduces the left signal and the right signal in the two
speakers 4 and 6 positioned in the substantially orthogonal direction to the direction of the
listener U among the speakers 3 to 6 of the speaker device 1 The surround signal is reproduced
by the two speakers 3 and 5 positioned in a direction substantially parallel to the direction of the
direction of the listener U. In this way, it is possible to give a sense of sound image localization to
the listener U without separately installing a surround speaker, so that surround reproduction
can be easily realized. Further, in the present embodiment, since the reflection of the ceiling or
the wall is used, there is an advantage that the loss of the sense of localization due to the
movement of the condition of the room or the listening position of the listener U is small.
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Furthermore, in the present embodiment, since only the four speakers 3 to 6 need be provided in
the speaker device 1, the present embodiment can be realized at low cost as compared with the
conventional speaker device.
[0018]
Further, as shown in FIG. 8B, under the control of the control unit 56, the media reproduction
unit 52 of the present embodiment causes the main speakers 55a and 55b to reproduce the front
signal including the center signal, and the speaker 3 of the speaker device 1 Also in the case
where the surround signal is to be reproduced in accordance with .about.6, the surround
reproduction can be realized without installing a separate surround speaker. Further, as in the
above, since the reflection of the ceiling or the wall is used, the loss of the sense of localization
due to the movement of the room conditions and the listening position of the listener U is small,
and can be realized at low cost compared to the conventional speaker device it can. Further, as
shown in FIG. 8B, under the control of the control unit 56, the media reproduction unit 52 of the
present embodiment causes the main speakers 55a and 55b to reproduce the front signal
including the center signal, and the speaker 3 of the speaker device 1 The L surround signal and
the R surround signal are reproduced by two speakers 4 and 6 positioned in a direction
substantially orthogonal to the direction of the direction of the listener U among 6 to 6, and the
direction parallel to the direction of the direction of the listener U is approximately parallel The
surround signal is reproduced by two speakers 3 and 5 positioned in the direction. Also in this
case, the same effect as described above can be obtained.
[0019]
Furthermore, when the media reproduction unit 52 does not reproduce the center signal as the
main speaker or when the center speaker is not set separately, as shown in FIG. 8A, the media
reproduction unit 52 is substantially orthogonal to the direction of the listener U. The left
surround signal and the right surround signal are reproduced by the two speakers 4 and 6
located at the front of the two speakers located in the direction substantially parallel to the
direction of the listener, from the speaker 3 located at the front Play the center signal. In this
way, it is possible to realize surround reproduction provided with a center ch (channel) without
installing a center speaker in front of the listener U. When the above-described surround
reproduction is performed, the media reproduction unit 52 performs predetermined processing
on the audio signal based on the head-related transfer function stored in the memory 58, for
example, change of the frequency characteristic or delay processing By applying the above, more
accurate surround reproduction can be realized for the listener U at a predetermined position. In
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this case, as head-related information based on the head-related transfer function, the memory
58 stores in advance in the memory 58 a plurality of head-related transfer functions in which the
conditions of the room size and the speaker device 1 are changed. If it is possible to select an
arbitrary head related transfer function, it is possible to realize optimal surround reproduction
according to the listening environment.
[0020]
Also in the audio device of the present embodiment, in the speaker device 1, the control unit 13
is configured to be able to perform level control of the amplifier 12 and light amount control of
the lighting device 15, so transmission from a remote commander not shown By controlling the
amplification level of the amplifier 12 in conjunction with the command signal of the incoming
light level, it is possible to adjust the volume of the reproduced sound reproduced from the
speakers 3 to 6 in synchronization with the brightness of the lighting device 15 become.
Furthermore, when the listener darkens the light to a certain level or more in order to go to bed,
in addition to the control to lower the volume of the speaker in conjunction with the light
intensity of the light, the volume level is gradually lowered with time. It is also possible to
perform control such that the reproduction sound from the speakers 3 to 6 is turned off after a
predetermined time has elapsed. In this way, the listener can provide, for example, a sound
environment in which the brightness of the illumination is matched without worrying about the
volume of the speaker. In the present embodiment, the audio apparatus is configured using the
speaker apparatus 1 integrated with the lighting apparatus shown in FIG. 1 as an example, but
this is merely an example, and is shown in FIG. A speaker apparatus in which such lighting
equipment is configured separately may be applied.
[0021]
It is a figure showing the appearance composition of the speaker apparatus concerning a 1st
embodiment of the present invention. It is the block diagram which showed the internal structure
of the speaker apparatus shown in FIG. It is the figure which showed the mode of the sound
emission at the time of attaching the speaker apparatus of this embodiment to a ceiling. It is the
figure which showed the external appearance structure of the speaker apparatus which concerns
on the 2nd Embodiment of this invention. It is another structural example of the speaker
apparatus which concerns on 2nd Embodiment. It is the figure which showed the internal
structure of the audio apparatus of this embodiment. It is the figure which showed the
arrangement | positioning of the speaker in the audio apparatus of this embodiment, and the
mode of sound emission. It is a figure showing an example of speaker arrangement in the case of
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realizing surround reproduction.
Explanation of sign
[0022]
DESCRIPTION OF SYMBOLS 1, 31 ... Speaker apparatus, 2, 32 ... Speaker cabinet, 3-6 ... Speaker,
7: ... Lighting cabinet 7, 8 ... Cable, 9 ... Power terminal, 11, 57 ... Reception part, 12, 54 ...
Amplifier, 13, DESCRIPTION OF SYMBOLS 56 ... Control part, 14 ... Lighting circuit, 15 ... Lighting
apparatus, 16, 59 ... Remote commander, 33 ... Power supply terminal, 51 ... Audio main body, 52
... Media reproduction part, 53 ... Transmission part, 55a, 55b ... Main speaker , 58 ... memory
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