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JPH09298797

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JPH09298797
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
three-dimensional sound reproducing apparatus such as a three-dimensional sound obtained by
driving a plurality of speakers with a surround processing apparatus and reproducing signals
from a recording medium containing a surround component in an audio signal.
[0002]
2. Description of the Related Art FIG. 20 is a conceptual view showing the structure of a
conventional general three-dimensional sound reproducing apparatus. In the figure, reference
numeral 101 denotes a video reproduction apparatus such as a laser disc player, 102 denotes a
surround processing apparatus for processing the audio output of the video reproduction
apparatus 101 including a surround component to generate a surround output; 104 and 105 are
amplifiers (power amplifiers), 106 and 107 are main speakers, 108 and 109 are rear speakers,
and 110 is a center speaker. Specifically, as shown in FIG. 21, the monitor display 111 is placed
at the center of one wall side of the room, and the surround processing device 102 and the
amplifiers 103, 104, 105 are installed under or near it. The center speaker 110 is installed near
the monitor display 111. The main speakers 106 and 107 are installed on both sides of the
monitor display 111 with a predetermined interval. The rear speakers 108 and 109 are disposed
on the wall surface opposite to them.
[0003]
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1
In such a conventional three-dimensional sound reproducing apparatus, each speaker is installed
on the opposite wall surface portion of the room, and the inside of the room is regarded as an
acoustic space, and the movement change of the sound image is recorded as viewing. Each
speaker is driven by the surround processing device 102 to be reproduced to generate
stereophonic sound.
[0004]
In the above-described conventional three-dimensional sound reproducing apparatus, in order to
make the whole room an acoustic space, a large volume is required, and therefore, it is necessary
to make all devices have a high output.
As a result, the size of each device increases, and the cost of the entire device becomes extremely
high. In addition, in order to generate a large amount of sound energy, if a room is not provided
with a soundproof function, noise problems may occur in densely populated areas such as cities.
For the reasons as described above, such a three-dimensional sound reproducing apparatus has
been widely spread to only some layers which have a sufficiently wide living environment or
which can be invested heavily for soundproofing.
[0005]
Moreover, since the conventional three-dimensional sound reproducing apparatus is configured
by combining many components, there are many connection points and it is difficult for general
users to set by themselves. Therefore, it was impossible to freely change the installation place
(room).
[0006]
On the other hand, devices such as digital video disc (DVD) players that can play back software
(discs) with wide-screen (cinema size) and recorded in three-dimensional sound, such as digital
video disc (DVD) players, have come up at relatively low prices. Often, even though many users
can easily get the player and its software, they can not fully enjoy the synergetic effect of the
powerful screen and three-dimensional sound that the software has, or give up the purchase A
situation like that occurs.
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2
[0007]
The present invention has been made to solve the above-mentioned problems, and a first object
is to obtain a low-energy three-dimensional sound reproducing apparatus which does not require
any measures such as providing a soundproof function in a room. .
[0008]
The second object is to obtain a simple and low-cost three-dimensional sound reproducing
apparatus.
[0009]
Furthermore, the third object is to obtain a simple three-dimensional sound reproducing
apparatus, which does not require time and effort for connection and can freely change the place
(room) to be installed.
[0010]
The fourth object is to obtain a three-dimensional sound reproducing apparatus that can be
realized in a small space.
[0011]
In a three-dimensional sound reproducing apparatus according to the present invention, a first
and a second are provided with a plurality of speakers such that the openings are arranged on a
substantially straight line on one surface of each housing. A surround processing apparatus in
which the power amplifier is integrated with the first support base, the first and second supports
holding the housing at a horizontal and at a fixed height, respectively; The three-dimensional
sound is reproduced in the vicinity of both sides of the viewer in parallel so that the openings of
the speakers of the second housing face each other.
[0012]
Further, the surround processing apparatus and the power amplifier are built in the first support
base, and the wiring between the first case held on top of the surround processing apparatus and
the first housing is connected through the holding portion.
[0013]
In addition, the surround processing apparatus and the power amplifier are built in the first
housing.
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3
[0014]
Also, the first and second housings can be attached to and detached from the first and second
supports, and a constant elevation angle can be provided only when the first and second
housings are installed directly on the floor or the like. Means are provided in the first and second
housings.
[0015]
Also, the sound of the playback device is provided to a surround processing device in which the
power amplifier is integrated, or a first support base in which the surround processing device
and the power amplifier are built in, or a first housing in which the surround processing device
and the power amplifier are built It comprises a receiver capable of wirelessly receiving a signal.
[0016]
In addition, the first and second supports have a function of adjusting the holding height of the
first and second housings.
[0017]
Further, the first and second supports are provided with a mechanism capable of vertically
rotating while holding the first and second housings respectively and holding them even in the
vertical position.
[0018]
Also, the second support has a function of adjusting the cable length between the first housing
and the second support on the second support, and the cable on the second support can be
removed only by removing the cable on the first support side. Can be stored.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION In a simplified three-dimensional sound
apparatus according to an embodiment of the present invention, a first and a second housing
provided with a plurality of speakers and a first and a second support for holding them are
provided. Since the surround processing apparatus in which the power amplifier is integrated on
the first support base is held and the three-dimensional sound apparatus is configured by these,
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4
the three-dimensional sound can be reproduced in the vicinity of the viewer's ears. Sufficient
sound energy can be transmitted with a small speaker output.
Also, the number of connection points is significantly reduced.
[0020]
In addition, the surround processing apparatus and the power amplifier are built in the first
support base, and the wiring between the first case held on top of the surround processing
apparatus and the first housing is connected through the holding unit. The structure is simplified
and the number of connection points is further reduced.
[0021]
Further, by incorporating the surround processing device and the power amplifier in the first
housing, the structure is further simplified, and the same holds true even in the absence of a
support.
[0022]
Also, means for making the first and second casings detachable from the first and second
supports and giving a constant elevation angle only when the first and second casings are
installed directly on the floor or the like Since the first and second housings are provided, use in
a fixed manner on a support and use in direct installation on a floor, a chair or the like can be
easily and freely selected.
[0023]
In addition, the audio signal of the playback device may be wirelessly received by the surround
processing device, or the first support base including the surround processing device and the
power amplifier, or the first housing including the surround processing device and the power
amplifier. It is possible to provide a possible receiver and eliminate the connection with the
playback device.
[0024]
In addition, since the first and second supports have a function to adjust the holding height of the
first and second housings, the speaker opening is always at a position near both ears according
to the viewing posture. Can be approached.
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5
[0025]
Furthermore, the first and second housings are vertically rotated while being coupled to the
respective supports, and held in the vertical position, thereby reducing the storage space when
not in use.
[0026]
In addition, the second support base is provided with a cable length adjustment function so that
the distance between the first and second housings can be freely changed, and the cable on the
first support base side can be removed simply by It can be stored in the second support stand.
[0027]
The present invention will be specifically described below based on the drawings showing the
embodiments thereof.
Embodiment 1
FIG. 1 is a perspective view of a simplified stereophonic sound apparatus according to a first
embodiment of the present invention.
In the figure, 1 is a first housing, 2 is a second housing, 3 and 4 are a first support and a second
support for holding the respective housing horizontally and at a fixed height. . .
FIG. 2 is a horizontal cross-sectional view of the first housing 1. 5 is a front speaker, 6 is a main
speaker, and 7 is a rear speaker.
The main speaker 6 is attached vertically to the opening 9 provided on the baffle surface 8 of the
first housing 1, but the front speaker 5 and the rear speaker 7 have openings for the purpose of
enhancing directivity. At the ends of the horn-shaped sound guiding portions 10a and 11a
formed continuously to 10 and 11, they are attached to be inclined rearward and forward,
respectively.
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6
A cosmetic panel 12 is made of a punching metal or the like which conceals the openings 9, 10,
11 disposed on a substantially straight line and allows sound to pass therethrough.
A front speaker 13, a main speaker 14, and a rear speaker 15 are attached to the second housing
2 symmetrically to the first housing 1.
Reference numeral 16 denotes a surround processing apparatus in which power amplifiers 17
corresponding to the above three sets of speakers are integrated, and held by a support 3.
Reference numeral 18 denotes a wireless receiving unit, which has, for example, a function of
receiving an infrared signal transmitted from the reproduction device 19 and converting the
infrared signal into an audio signal.
A cable 21 for supplying the audio output of the surround processing device 16 to the first
housing 1 is a cable for supplying the second housing 2 as well.
[0028]
FIG. 3 is a conceptual block diagram of a three-dimensional sound reproducing apparatus
according to the first embodiment of the present invention, and FIG. 4 is a perspective view
showing a use mode of the three-dimensional sound reproducing apparatus according to the first
embodiment of the present invention.
To explain this, the audio signal from the playback device 19 is surround-processed by the
surround processing device 16 and amplified, and each of the first housing 1 and the second
housing 2 installed on the left and right sides of the viewer, respectively. Supply to the speaker.
Stereo sound is driven from the main speakers 6 and 14, monaural sound from the front
speakers 5 and 13, and surround sound from the main speakers 6 and 14 and rear speakers 7
and 15.
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7
By installing the first housing 1 and the second housing 2 so that the main speaker 6 of the first
housing 1 and the main speaker 14 of the second housing 2 correspond to the ears of the viewer,
the vicinity of both the ears is established. Sound field is formed.
Actually, as shown in FIG. 4, the playback apparatus 19 is placed under the monitor display 22
and the first housing 1 and the second support 4 fixed to the first support 3 on both sides of the
viewer. It is possible to view only by installing the fixed second housing 2 and connecting the
cables 20 and 21, and it is easy to change the viewing position.
[0029]
FIG. 5 is a perspective view showing another mode of use of the three-dimensional sound
reproducing apparatus according to the first embodiment of the present invention, and FIG. 5 (a)
is a view when two or more persons watch in a row. Is a case of installing a monitor display 22 at
a corner of a room and watching a plurality of people side by side in an L-shape, so to speak, in a
typical style in a living room.
The method of FIG. 5 (b) is a method which can not be performed by the conventional threedimensional sound reproducing apparatus.
In all cases, not all people can watch under the best conditions, but there is no practical problem
because the sound source is in the vicinity.
[0030]
In the first embodiment, an example is shown in which three speakers are used on one side and a
total of six speakers are used, but it is naturally possible to use two speakers on one side, a total
of four, or three or more on one side. is there.
[0031]
In the first embodiment, the infrared signal transmitted from the reproducing apparatus 19 is
received by the wireless receiving unit 18, and the infrared signal is converted into an audio
signal. However, as indicated by the one-dot chain line in FIG. It is of course also possible to make
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8
a direct cable connection between the device 19 and the surround processing device 16.
In this case, although the range in which the installation place of the present apparatus is freely
changed is more limited than in the first embodiment, there is no problem as long as the room
size of a general house.
[0032]
Second Embodiment
In the first embodiment, the surround processing device 16 in which the power amplifier 17 is
integrated with the first support 3 is held. However, as shown in FIG. If the frame structure is
adopted and the surround processing device 16 and the power amplifier 17 are built in the first
support base 3, the structure can be rationalized, and the opening 24 provided in the holding
portion 23 is penetrated as shown in FIG. By configuring the wiring between the first housing 1
and the first housing 1 to be directly connected, the user's connection work becomes
unnecessary.
[0033]
Third Embodiment
In the first and second embodiments, the surround processing device 16 and the power amplifier
17 are configured to be held or built in the first support base 3, as shown in FIGS. 7 and 8. As
described above, when the surround processing device 16 and the power amplifier 17 are built
in the first housing 3, the structure is more streamlined, economical, and a use form without a
support is also realized.
FIG. 9 shows the viewing state of the embodiment of only the first and second housings 1 and 2,
the speakers 5, 6, 7 of the first housing 1 and the speakers 13 of the second housing 2, 14 and
15 are attached at a constant elevation angle and can be installed directly on a floor or the like
for use. In this third embodiment, although the place of use is limited, it is more economical.
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9
[0034]
Fourth Embodiment Further, as shown in FIG. 10, a fixed base 25 is provided on the bottom of
the first casing 1, ribs 26 are provided on both sides of the fixed base 25 and fixed by the cut
washer 27 to the holding portion 23 of the first support 3. By fixing the first housing 1 with the
screw 28, the first housing 1 can be attached and detached. Reference numeral 23 a denotes a
dowel for anti-rotation, which is inserted into a hole 25 a provided in the fixed base 25. In
addition, the 2nd housing 2 is also set as the same structure. FIG. 11 shows a state in which the
first housing 1 is removed, and as shown in FIG. By the shape of the rib 26, when installed
directly on the floor or the like, a constant elevation angle can be given to the first and second
housings 1 and 2, and the speaker can be directed in the direction of both ears of the viewer.
[0035]
Embodiment 5 Although the first and second housings 1 and 2 are fixed to the first and second
supports 3 and 4 in the above embodiment, as shown in FIG. , 4 can adjust the holding height by
providing the movable holding portion 29. The height adjustment mechanism will be described
with reference to FIG. 14. The movable holding portion 29 includes the base portion 30, the slide
shaft 31, and the guide shaft 32, and the slide shaft 31 is provided with a rack forming portion
31a in a predetermined range. A rack forming portion 33a provided at one end of a locking rod
33 rotatably supported in the second support 3 or 4 is designed to be in pressure contact with
the rack forming portion 31a by a spring 34. A push button 35 is provided at the other end of
the locking bar 33, and is designed to be exposed to the outside from the openings 3a and 4a.
[0036]
In the above configuration, by pushing the push button 35, the rack forming portion 33a is
separated from the slide shaft 31, and in this state, the movable holding portion 29 can be
vertically moved. When a hand is released from the push button 35 at a desired position, the
rack forming portion 33a is pressed against the slide shaft 31 by the spring 34, and the movable
holding portion 29 is locked. Therefore, the heights of the speakers can be made to correspond
to the state of viewing.
[0037]
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10
Sixth Embodiment In the fifth embodiment, the first and second housings 1 and 2 are fixed to the
movable holding portion 29. However, as shown in FIG. By fixing the first and second housings 1
and 2 to the rotation holding portion 36, the first and second housings 1 and 2 are kept coupled
to the first and second supports 3 and 4, respectively. 2 can be rotated vertically, and the
installation space can be reduced when not in use. 37 is a lock claw provided on the rotation
holding portion 36, and the lock hole 37a engages with the convex portion 38 provided on the
movable holding portion 29, and in use, the rotation holding portion 36 is movable as shown in
the figure. The holding portion 29 is fixed, and when not in use, as shown in FIG. 16, the lock
claw 37 is removed from the convex portion 38 and rotated to make the first and second
housings 1 and 2 vertical. In this case, a locking mechanism may be provided, but it can be held
simply by providing the pads 39 on the first and second housings 1 and 2 as shown.
[0038]
FIG. 17 shows another application of the sixth embodiment, in which the first and second
housings 1 and 2 are vertically set, for example, installed on both sides of a bed, and an image of
the video projector 40 is displayed. By projecting onto the ceiling, it is possible to view
stereophonic software in a comfortable posture as it is supine, which was impossible with the
conventional stereophonic sound reproducing apparatus. In addition, it is also possible to view
audio software recorded as stereophonic sound.
[0039]
Embodiment 7 FIG. 18 relates to the improvement of usability that can be applied to the above
embodiment, and 41 is a winding mechanism (not described in detail) of the cable 21 provided
on the second support base 4. The cable 21 is drawn out for use by a required length. In the case
of shortening the length, the winding mechanism 41 is wound by turning the winding knob 43
shown in FIG. When not in use, the connector portion 21 a of the cable 21 is wound up in the
storage portion 44 provided to be extended to the outlet port 42 until the connector portion 21 a
of the cable 21 is stored. With such a structure, the length of the cable 21 between the first and
second housings 1 and 2 can be freely adjusted, and can be accommodated in the second support
4 when not in use.
[0040]
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11
By the way, although the case where the present invention is used to reproduce stereophonic
sound has been described in the above description, it goes without saying that it can be used to
reproduce media recorded in monaural or stereo or to view broadcasts. It can also be a mono or
stereo device except for the above.
[0041]
Since the present invention is configured as described above, the following effects can be
obtained.
[0042]
A surround processing apparatus including a first and a second housings having a plurality of
speakers and first and second supports for holding the respective housings, and the power
amplifier being integrated on the first support; By configuring a three-dimensional sound device
with these, three-dimensional sound can be reproduced in the vicinity of the viewer's binoculars,
and hence sufficient sound energy can be transmitted with a small speaker output, so there is no
soundproof function. Even in a room, it is possible to watch powerful three-dimensional sound,
and since there are very few connection points, anyone can easily install it, and furthermore, the
place to install can be changed freely.
[0043]
In addition, the surround processing apparatus and the power amplifier are built in the first
support base, and the wiring between the first case held on top of the surround processing
apparatus and the first housing is connected through the holding unit. The structure is simplified,
which can be realized at low cost, the number of connection points can be further reduced, and
the installation work is simplified.
[0044]
Further, by incorporating the surround processing device and the power amplifier in the first
housing, the structure is further simplified, and the structure can be realized at lower cost, and in
addition, the structure can be realized without a support. Freedom of
[0045]
In addition, since the first and second housings can be attached to and detached from the first
and second supports, and the first and second housings are provided with a constant elevation
angle, they are fixed to the supports. It is easy to use it by installing it directly on the floor or
chair, etc., and it can be selected freely, and it can cope with various use environments.
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[0046]
In addition, since the receiving unit capable of wirelessly receiving the audio signal of the
reproducing apparatus is provided, the connection with the reproducing apparatus can be
eliminated, which simplifies the installation work and can be performed indoors. The installation
location (room) of the device can be freely changed without losing the beauty of the
[0047]
In addition, since the first and second supports have a function to adjust the holding height of the
first and second housings, the speaker opening is always at a position near both ears according
to the viewing posture. Can be approached, and it can respond to various viewing postures.
[0048]
Furthermore, since the first and second housings can be vertically rotated while being coupled to
the respective supports and held in the vertical position, the storage space when not in use can
be reduced.
[0049]
In addition, since the second support has an adjustment function of the cable length, and can be
stored in the second support only by removing the cable on the first support side, the space
between the first and second housings can be obtained. It is possible to freely change the
distance, which makes it possible to cope with the increase and decrease of the number of
viewers instantly, and it is extremely easy to clean up when not in use.
[0050]
Brief description of the drawings
[0051]
FIG. 1 is a perspective view of a three-dimensional sound reproducing apparatus according to a
first embodiment of the present invention.
[0052]
2 is a cross-sectional view showing the main part of FIG.
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13
[0053]
FIG. 3 is a conceptual block diagram of a three-dimensional sound reproducing apparatus
according to a first embodiment of the present invention.
[0054]
FIG. 4 is a perspective view showing a usage mode of the three-dimensional sound reproducing
apparatus according to the first embodiment of the present invention.
[0055]
FIG. 5 is a perspective view showing another mode of use of the three-dimensional sound
reproducing apparatus in accordance with Embodiment 1 of the present invention.
[0056]
FIG. 6 is a perspective view of a three-dimensional sound reproducing apparatus according to a
second embodiment of the present invention.
[0057]
FIG. 7 is a perspective view of a three-dimensional sound reproducing apparatus according to a
third embodiment of the present invention.
[0058]
FIG. 8 is a cross-sectional view showing the main parts of a three-dimensional sound reproducing
apparatus according to a third embodiment of the present invention.
[0059]
FIG. 9 is a plan view showing a state of use of another three-dimensional sound reproducing
apparatus according to a third embodiment of the present invention.
[0060]
FIG. 10 is a plan view showing the main parts of a three-dimensional sound reproducing
apparatus according to a fourth embodiment of the present invention.
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14
[0061]
FIG. 11 is a perspective view showing the main parts of a three-dimensional sound reproducing
apparatus according to a fourth embodiment of the present invention.
[0062]
FIG. 12 is a plan view showing a use mode of a three-dimensional sound reproducing apparatus
according to a fourth embodiment of the present invention.
[0063]
FIG. 13 is a plan view showing the main parts of a three-dimensional sound reproducing
apparatus according to a fifth embodiment of the present invention.
[0064]
FIG. 14 is a perspective view and a cross-sectional view of a three-dimensional sound
reproducing apparatus according to a fifth embodiment of the present invention.
[0065]
FIG. 15 is a plan view showing the main parts of a three-dimensional sound reproducing
apparatus according to a sixth embodiment of the present invention.
[0066]
FIG. 16 is a plan view showing a use mode of a three-dimensional sound reproducing apparatus
according to a sixth embodiment of the present invention.
[0067]
FIG. 17 is a perspective view showing another mode of use of the three-dimensional sound
reproducing apparatus in accordance with embodiment 6 of the present invention.
[0068]
FIG. 18 is a perspective view of a three-dimensional sound reproducing apparatus according to a
seventh embodiment of the present invention.
[0069]
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15
FIG. 19 is a plan view of a three-dimensional sound reproducing apparatus according to a
seventh embodiment of the present invention.
[0070]
FIG. 20 is a conceptual diagram showing a conventional three-dimensional sound reproducing
apparatus.
[0071]
FIG. 21 is a perspective view showing a usage mode of the conventional three-dimensional sound
reproducing apparatus.
[0072]
Explanation of sign
[0073]
DESCRIPTION OF SYMBOLS 1 1st housing, 2 2nd housing, 3 1st support stand, 4 2nd support
stand, 5 front speaker 6 main speaker, 7 rear speaker, 13 front speaker, 14 main speaker, 15
rear speaker, 16 A surround processing device, 17 power amplifiers, 23 holding parts, 24
openings, 25 fixed bases, 26 ribs, 28 fixed screws, 29 movable holding parts, 36 rotation holding
parts, 41 winding mechanism, 44 housing parts.
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