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JP2009201159

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Notice
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 JP2009201159
The present invention provides an acoustic reproducing apparatus using a vibrator which
combines the functions of a wall material, a door material, a pillar material, a ceiling material, a
floor material, a window material, a partition material, a partition material or a folding material
which is a part of building material. The purpose is A voice coil is coupled to a surface of a
substantially planar vibrating body combined with the function of a building material, and
magnetic flux generating means is provided in a range acting on the voice coil. By combining the
magnetic flux generating means and the vibrating body with the mounting body, it is possible to
realize the small-sized and thin apparatus, and it is possible to improve the space factor in the
room and to improve the freedom of the indoor layout. Cost reduction and productivity
improvement can be achieved by reducing the number of points. [Selected figure] Figure 1
Sound reproduction device
[0001]
The present invention relates to a sound reproduction device used in a living space made of a
building material such as a house, an apartment building, and an office building.
[0002]
FIG. 19 is a diagram showing the configuration of a conventional living space and a sound
reproduction device used for this living space.
[0003]
In FIG. 19, 100 is a living space, 101 is a wall, 102 is a ceiling, 103 is a floor, 104 is a pillar, 105
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is a door, and 106 is a window.
[0004]
Further, in the living space 100, an audio system 200 equipped with a 5.1 channel surround
system capable of reproducing a realistic sound field, which has recently become widespread in
homes, is installed.
[0005]
The audio system 200 includes a main unit 201 including a player unit and an amplifier unit
including an operation unit, a signal input unit, and an amplification unit, a right front speaker
202 and a left front speaker 203, a right rear speaker 204 and a left rear speaker 205. And the
center speaker 206 and the subwoofer 207 in total of six speakers.
[0006]
These speakers have been designed to be placed at the corners of a room so that the living space
100 can be secured as wide as possible, or embedded in the wall 101 for use.
[0007]
As prior art document information related to the invention of this application, for example,
Patent Document 1 is known.
[0008]
Japanese Utility Model Application Publication No. 3-86688
[0009]
The audio system 200, which is a conventional sound reproduction device, requires a total of six
speakers, particularly when the 5.1 channel surround system described above is mounted, and an
enclosure is required for each of the speakers. Very large.
[0010]
Furthermore, it is important to secure a large volume of the enclosure in order to widen the
reproduction band and to realize a speaker capable of realizing realistic sound reproduction that
can be reproduced at a large volume.
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[0011]
On the other hand, it is becoming mainstream of recent living environment to improve living
environment and to improve cost performance by making effective use of a narrow living space,
as housing conditions are represented by apartments in central Tokyo.
[0012]
Therefore, the installation of the audio system 200 equipped with the above-mentioned 5.1
channel surround system capable of realistic sound reproduction and sound field reproduction
requires a large area, and is therefore avoided from the current housing situation. Had the
problem of
[0013]
As measures against this, some speakers have been downsized or embedded in a wall. However,
although it is possible to reduce the volume required for installation, all of them are
disadvantageous in terms of sound reproduction, and they are realistic. Good sound reproduction
could not be realized.
[0014]
An object of the present invention is to solve such conventional problems and to provide a sound
reproducing apparatus capable of effectively utilizing a narrow living space.
[0015]
In order to solve the above problems, the present invention comprises at least a magnetic flux
generating means, and a vibrating body in which a voice coil disposed in a non-contact state with
the magnetic flux generating means is coupled within a range where the magnetic flux of the
magnetic flux generating means acts. The magnetic flux generating means and the vibrating body
are coupled to the mounting body, the vibrating body is formed in a substantially flat shape, the
voice coil is provided on the surface of the vibrating body, and the vibrating body is a wall
surface material which is a part of the building material The sound reproducing apparatus is
made of one of a door material, a pillar material, a ceiling material, a floor material, a window
material, a screen material, a partition material, and a folding material.
[0016]
As described above, the sound reproducing apparatus according to the present invention can
realize the reduction in size and thickness of the apparatus by configuring the sound reproducing
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apparatus using a vibrating body formed of a part of a building material.
[0017]
Therefore, since a space for installing the sound reproduction device which is a speaker system is
unnecessary, the space factor in the room can be improved, and the degree of freedom in the
indoor layout can be improved.
[0018]
Furthermore, since the vibrating body uses the function of the building material in combination,
the diaphragm of the original speaker becomes unnecessary, and the cost can be reduced and the
productivity can be improved by reducing the number of parts.
[0019]
The figure which showed the structure of the living space and the sound reproduction apparatus
by embodiment of this invention The external view of the vibrating body which is a part of
building material by embodiment of this invention Use of the sound reproduction apparatus by
embodiment of this invention Sectional view showing the state Sectional view showing the state
of use of the sound reproduction apparatus according to the embodiment of the present
invention Sectional view of the sound reproduction apparatus according to the embodiment of
the present invention Sectional view of the sound reproduction apparatus according to the
embodiment of the present invention External view of a vibrator according to an embodiment of
the present invention External view of a vibrator according to an embodiment of the present
invention A sectional view of a sound reproducing apparatus according to an embodiment of the
present invention A sectional view of a sound reproducing apparatus according to an
embodiment of the present invention Sectional view of acoustic reproduction apparatus
according to the embodiment of the present invention Sectional view of acoustic reproduction
apparatus according to the embodiment of the present invention Figure showing the
configuration of the living space and the acoustic reproduction apparatus according to the
embodiment of the present invention Architecture by form View of sound reproducing apparatus
according to an embodiment of the present invention, appearance of sound reproducing
apparatus according to an embodiment of the present invention, and appearance of sound
reproducing apparatus according to an embodiment of the present invention according to the
present invention. A diagram showing a configuration of a living space and a sound reproducing
device according to a form A diagram showing a configuration of a living space and a sound
reproducing device according to an embodiment of the present invention A diagram showing a
configuration of a conventional living space and a sound reproducing device
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[0020]
Embodiment 1 The present invention will be described below using Embodiment 1 with
reference to the drawings.
[0021]
FIG. 1 is a diagram showing a living space of the present invention and a configuration of a
sound reproduction apparatus used for the living space.
[0022]
In FIG. 1, 300 is a living space, 301 is a front wall, 302 is a ceiling, 303 is a floor, 304 is a pillar,
305 is a door, and 306 is a window.
[0023]
And, in the living space 300, an audio system 400 equipped with a 5.1 channel surround system
capable of reproducing a realistic sound field, which is recently spreading in each home, is
installed.
[0024]
This audio system 400 uses a main body portion 401 including a player portion and an amplifier
portion including an operation means, a signal input means, an amplification means, etc., and a
right wall surface material of the front wall as a vibrating body 27 of the right front speaker 402
The left side wall material of the front wall is used as the vibrating body 27 of the left front
speaker 403.
[0025]
The right wall surface material of the rear wall shown in the lower part of FIG. 1 is used as the
vibrating body 27 of the right rear speaker 404, and the left wall surface material of the rear wall
is used as the vibrating body 27 of the left rear speaker 405.
[0026]
Furthermore, by using the center wall surface material of the front wall as the vibrating body 27
of the center speaker 406 and using the left wall surface material of the side wall as the vibrating
body 27 of the subwoofer 407, a total of six speakers are configured.
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[0027]
The broken line in the figure shows the voice coil 28 built in the wall.
[0028]
FIG. 2 is an external view showing only a wall surface material which is a building material used
as the vibrating body 27 shown in FIG. 1, and the wall surface material as the vibrating body 27
is formed in a substantially planar shape.
[0029]
The broken line in the drawing shows the voice coil 28 disposed on the back side of the wall
surface.
[0030]
FIG. 3 is a cross-sectional view showing a use state of the wall surface material of FIG. 2, and a
magnetic circuit 24 including a magnet 21 as magnetic flux generating means is coupled to a
wall surface core 410 formed between two pillars 304. The voice coil 28 is inserted into the
magnetic gap 25 formed by the magnet 21 and the yoke 23 of the magnetic circuit 24, and the
opposite side of the voice coil 28 is coupled to the vibrating body 27.
[0031]
Then, the vibrating body 27 becomes a surface of the wall, and has a function as a wall and also
has a function of generating a sound as a diaphragm.
[0032]
That is, it comprises a magnetic circuit 24 which is a magnetic flux generating means, and a
vibrating body 27 in which a voice coil 28 disposed in a non-contact state is coupled to the
magnetic flux generating means within the range where the magnetic flux of the magnetic flux
generating means works. The vibrating body 27 constitutes a sound reproduction device as a
part of a building material.
[0033]
With this configuration, the sound reproducing apparatus can be miniaturized and thinned by
using the vibrating body 27 formed of a part of the building material.
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[0034]
Further, by forming a conical diaphragm so-called cone paper, which is often used in the
conventional sound reproducing apparatus, as a wall surface material in a substantially planar
shape, it is possible to realize a great reduction in thickness.
[0035]
Furthermore, since the vibrating body 27 also uses the function of the building material, the
diaphragm of the original speaker becomes unnecessary, and the cost can be reduced and the
productivity can be improved by reducing the number of parts.
[0036]
The above-described sound reproducing apparatus is applied to a 5.1 channel surround system
capable of reproducing a realistic sound field, and this audio system 400 is composed of a total
of six speakers. By substituting all diaphragms with wall surfaces, it is possible to greatly expand
the living space of the house.
[0037]
FIG. 4 is a cross-sectional view showing a state in which a wall material having the function of the
vibrating body 27 is used on both the front and back surfaces, and the sound reproducing device
is two flux reproducing devices with the magnetic flux generating means side inside. Are
integrally connected.
That is, the yoke 23 which is a part of the magnetic circuit 24 which is a magnetic flux
generating means is shared.
[0038]
This configuration is effective when the central wall of two consecutive rooms is shared and the
wall of each room has the function of a speaker for reproducing sound, and sharing of parts can
be achieved, and space saving is achieved. And cost reduction can be realized.
[0039]
Although this configuration has been described in which the yoke 23 which is a part of the
magnetic circuit 24 is shared, the present invention is not limited to this, and the magnet 21 may
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be shared, and parts other than these may be used. It may be shared.
[0040]
FIG. 5 shows a sound reproducing apparatus in which a magnetic circuit 24 as magnetic flux
generating means and a vibrating body 27 are coupled to a mounting object.
The above-described sound reproducing apparatus has a configuration in which a frame 26 as a
frame to be mounted is provided, and the other configuration is the same as the configuration
shown in FIG. Thus, even if there is no core material or pillar material of the wall, it is possible to
configure a wall surface module as a sound reproduction device, and it becomes possible to
manage and operate independently as a building material.
[0041]
Therefore, it is not necessary to assemble and construct at a construction site, and can be
completed as a wall surface module as an acoustic reproduction device inside a building material
factory, and the ease of management and operation and cost reduction can be achieved.
[0042]
In FIG. 6, the yoke 23 which is a part of the magnetic circuit 24 which is the magnetic flux
generating means shown in FIG. 4 is shared and configured, and in addition, the frame 26 which
is a frame as a mounted body is also shared and configured. It is a thing.
[0043]
With this configuration, it is possible to share a central wall of two consecutive rooms, to
construct a wall module having the function of a speaker that reproduces a sound on the wall of
each room, alone as a building material. Management and operation become possible.
[0044]
Furthermore, sharing of parts can be achieved, and space saving and cost reduction can be
realized.
[0045]
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With the above-described configuration, a space for installing the sound reproducing device as
the speaker system is not required, the space factor in the room can be improved, and the degree
of freedom in the indoor layout can be improved.
[0046]
In addition, common use of parts, space saving and cost reduction can be realized, and in
addition, it can be completed as a wall surface module as an acoustic reproduction device inside a
building material factory, and ease of management and operation is also possible. The effect is
enormous.
[0047]
Furthermore, since the wiring between the audio system and each speaker can be implemented
inside the wall, bothersome cords can be eliminated from the living space in daily life, and the
living comfort and living environment can be improved. Can be
[0048]
Second Embodiment The present invention will be described below using the second
embodiment with reference to the drawings.
[0049]
FIG. 7 is a perspective view of the vibrating body 27 showing the configuration of the voice coil
28 of the present invention.
[0050]
FIG. 7 shows a voice coil provided by printing method, plating method, etching method or the
like on the surface of the vibrator without crossing the magnetic flux generating means without
using the winding method.
[0051]
Further, as shown in FIG. 8, the voice coil 28 may be provided including at least the vicinity of
the outer peripheral portion of the vibrating body 27.
[0052]
Like these configurations, the voice coil 28 is formed in a square spiral shape at least on the
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surface of the vibrating body 27 including the vicinity of the outer peripheral portion.
[0053]
FIGS. 9 and 10 are cross-sectional views showing the configuration of a sound reproducing
apparatus using the vibrating body 27 on which the voice coil 28 shown in FIGS. 7 and 8 is
formed.
[0054]
In FIG. 9, the voice coil 28 is provided on the surface of the vibrating body 27 without crossing
the magnetic flux generating means, and the outer periphery thereof is coupled to a frame 26
which is a frame body as a mounted body.
[0055]
The magnetic flux generating means for driving the vibrator 27 couples the plurality of magnets
21 to the yoke 23 formed in such a shape as to couple them, and the leakage magnetic flux
generated from the magnetic gap 25 acts on the voice coil 28. And the vibrator 27 is driven.
[0056]
Referring to FIG. 10, the voice coil 28 is formed on both sides of the vibrating body 27, and the
voice coil 28 is formed on the entire surface of the vibrating body 27 as shown in FIG. As shown
in FIG. 8, the voice coil 28 is formed only at least near the outer peripheral portion of the
vibrating body 27.
[0057]
The voice coil 28 formed on both the front and back surfaces of the vibrating body 27 is
disposed so that at least a part of the magnetic circuit 24 serving as magnetic flux generating
means is opposed to each other via the vibrating body 27 on both sides. The vibrating body 27 is
driven by causing the leaked magnetic flux generated from the magnetic gap 25 of the magnetic
circuit 24 to act on the voice coil 28.
[0058]
With the above configuration, by forming the voice coil 28 on the surface of the vibrating body
27 in a state where the voice coil 28 does not intersect the magnetic circuit 24 which is a
magnetic flux generating means, it is possible to make the acoustic reproducing device thinner.
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[0059]
Furthermore, as shown in FIG. 10, with regard to the voice coil 28 formed on both sides of the
vibrating body 27, its driving force can be increased, and the sound pressure level of the sound
reproducing apparatus can be improved. .
[0060]
FIG. 11 shows that the magnetic flux generating means of the present invention is constituted by
an induced magnetic field by current.
[0061]
As shown in FIG. 11, the outer peripheral portion of the vibrating body 27 in which the voice coil
28 is formed is coupled to a frame 26 which is a frame body as a mounted body, and the frame
26 is an induced magnetic field by current which is magnetic flux generating means. Is provided
with a coil 28A for generating the
[0062]
Then, a current is supplied to the coil 28A, and the generated magnetic flux is caused to act on
the voice coil 28 to drive the vibrating body 27.
[0063]
With this configuration, it is possible to eliminate the need for a magnetic circuit including a
magnet, and to realize further downsizing and thinning of the device.
[0064]
In FIG. 12, a coil 28A for generating an induction magnetic field, which is the magnetic flux
generating means of FIG. 11, is commonly provided with a frame 26 as a frame to be mounted
and provided on both sides, and a voice coil 28 is formed. The vibrating body 27 is also
configured such that outer peripheral portions thereof are connected to the frame 26 on both
sides of the coil 28A formed on the frame 26 so as to form front and back surfaces.
[0065]
With this configuration, it is possible to reduce the thickness of the sound reproducing apparatus
that can realize sharing of parts, space saving, and cost reduction, and the effect is enormous.
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[0066]
In the above configuration, it is desirable that the bonding of the vibrating body 27 and the
frame 26 be performed by a flexible adhesive or a pressure-sensitive adhesive from the
viewpoint that the amplitude of the vibrating body 27 can be sufficiently secured.
[0067]
However, if necessary, a high-hardness adhesive can be used, and it is also possible to use the
vibrator 27 and the frame 26 without bonding.
[0068]
Third Embodiment Hereinafter, the present invention will be described using the third
embodiment and with reference to the drawings.
[0069]
FIG. 13 is a diagram showing a living space of the present invention and a configuration of a
sound reproduction device used for the living space.
[0070]
The residential space of the present invention has been described in the first embodiment, and
thus the detailed description thereof is omitted. However, the vibrating body 27 described in the
first embodiment has described the example using the wall material of the building material.
However, here, the application to construction materials other than wall materials and
construction related materials will be described.
[0071]
In FIG. 13, reference numeral 301 denotes a wall, 302 denotes a ceiling, 303 denotes a floor,
304 denotes a pillar, 305 denotes a door, and 306 denotes a window.
[0072]
The building material shown in the broken line in FIG. 13 with the built-in voice coil, that is, the
ceiling material of 302, the floor material of 303, the pillar material of 304, the pillar material of
305, the door material of 305, and the window material of 306 Similarly, by providing the voice
coil and the magnetic flux generating means, it can be configured as a vibrating body of the
sound reproducing device.
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[0073]
In addition, about the pillar material of 304, an expansion perspective view is shown in FIG.
[0074]
In addition, application to construction related materials such as screen material 320 and
partition 321 shown in FIGS. 15 and 16 and folding screen is also possible.
[0075]
Furthermore, although not shown in the drawings, application to exteriors such as nameplates,
outer walls and portals as construction related materials is also possible.
[0076]
Fourth Embodiment The present invention will be described below using the fourth embodiment
with reference to the drawings.
[0077]
FIG. 17 is a diagram showing a living space of the present invention and a configuration of a
sound reproduction device used for the living space.
[0078]
The residential space of the present invention has been described in the first embodiment, and
thus the detailed description thereof will be omitted. The use means of the voice coil or the
vibrator for the building material described in the first embodiment will be described.
[0079]
In FIG. 17, 301 is a front wall, 330 is a back wall.
[0080]
The same voice coil and magnetic flux generation means as in the first embodiment are provided
also for the building material in which the voice coil shown by the broken line in FIG. 17 is
embedded, that is, the front wall of 301 and the back wall of 330. It is configured as a vibrator of
the device.
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[0081]
Here, two or more independent voice coils may be coupled to one vibrator, and different electric
signals may be input to each voice coil to configure the sound reproduction apparatus, thereby
improving its performance. it can.
[0082]
For example, in the first embodiment, one voice coil on the right side is formed on the right side
of the front wall 301. However, in the present embodiment, three voice coils are formed by
dividing this into three. The sound reproducing apparatus can be used by inputting signals
different in frequency band to each voice coil.
[0083]
That is, among the three voice coils, the upper small voice coil 28B receives a signal dedicated to
the high range input to the tweeter, and the middle mid-range voice coil 28C receives the
medium range input to the squawker. A dedicated signal is input, and a signal dedicated to the
low frequency range that is normally input to the woofer is input to the lower large-sized voice
coil 28D to configure a multi-way speaker.
[0084]
With this configuration, it is possible to reproduce optimal frequency characteristics for the high
range, the middle range, and the low range by the respective voice coils and the mass of each
vibrating body to which this voice coil is coupled.
[0085]
That is, it is preferable to perform signal input control so that a higher voice range can be
received for a lighter voice coil and a smaller area, and a lower range can be received for a larger
voice coil and a larger area. Frequency characteristics can be realized.
[0086]
Also, as shown in FIG. 1 of the first embodiment, the stereo signal is divided into right and left to
be input to the front wall 301 or 5.1 channels, even if it is not finely divided as in this
embodiment. The sound reproduction apparatus can also be configured by inputting a
corresponding surround signal to a portion suitable for the reproduction frequency band.
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[0087]
In the above, a method has been described in which two or more independent voice coils are
coupled to one vibrating body, and different electric signals are input to each voice coil to
configure the sound reproducing apparatus. As long as there is little vibration transmission,
vibration from another voice coil may be transmitted to a vibrator to which one voice coil is
coupled, which may have an adverse effect.
[0088]
In this case, as in a back wall 330 shown in the lower part of FIG. 17, a method of providing a slit
331 in the wall surface material to prevent vibration transmission is effective.
[0089]
In the present embodiment, since the slit between the left and the right and the two slits between
the upper and the lower are provided, it is possible to realize stereo correspondence and 3-way
multiway correspondence with high performance.
[0090]
With this configuration, separation between each voice coil and each channel of each vibrator to
which this voice coil is coupled can be improved, crosstalk can be reduced, and sound
reproduction with better performance can be achieved. The device can be realized.
[0091]
Although not shown, the vibrating body 27 can also be configured to include an edge portion
rich in flexibility at its outer peripheral portion.
[0092]
With this configuration, the amplitude amount of the vibrating body 27 can be expanded and the
linearity can be improved by the effect of the flexible edge portion, so that the performance such
as acoustic characteristics can be improved.
[0093]
Further, as described above, even if the flexible edge portion is not provided, it is also possible to
obtain an effect similar to the above by forming the outer peripheral portion of the vibrating
body 27 softer than the portions other than the outer peripheral portion.
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[0094]
With this configuration, the amount of amplitude of the vibrating body can be expanded and the
linearity can be improved by the effect that the outer peripheral portion configures the vibrating
body having high flexibility without providing the edge portion. Both performance improvement
and cost reduction can be achieved.
[0095]
In the above description, although the example in which the voice coil 28 is formed in a singlelayer winding has been described, the voice coil 28 may be formed in two or more layers and
used as a response to performance improvement such as further sound pressure level
improvement. Thus, the driving force is improved, and efficiency improvement such as sound
pressure level improvement can be realized.
[0096]
Further, as shown in FIG. 18, a part or all of the operation means, the signal input means, and the
amplification means may be embedded in a building material to constitute a sound reproduction
device or a building material.
[0097]
With this configuration, the space factor in the room can be improved and the degree of freedom
in the indoor layout can be improved by embedding not only the sound reproducing apparatus
such as the speaker but also the entire system in the building material. it can.
[0098]
Furthermore, by configuring the color of the above-mentioned vibration body as a white-based
color, building materials such as wall materials can be used as a video display panel such as a
liquid crystal projector or a video display screen as a function other than acoustic radiation. .
[0099]
With this configuration, a space for installing a video display panel and a video display screen is
not necessary, so it is possible to improve the indoor space factor and to improve the degree of
freedom in indoor layout.
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[0100]
Furthermore, it is possible to realize sharing of parts, space saving and cost reduction, and in
addition, it can be completed as a wall module as an audio and video reproducing apparatus
inside a building material factory, and management and operation are easy. It is possible to aim
at sex, the effect is great.
[0101]
Furthermore, by constructing the living space or building structure of a house, an apartment, an
office building or the like by loading the above-described audio and video reproducing apparatus
and building material, it is possible to eliminate useless space and improve the indoor space
factor. It is possible to provide a living space and a building structure that can improve the
freedom of indoor layout.
[0102]
The sound reproducing apparatus according to the present invention can constitute the sound
reproducing apparatus by a vibrating body combined with the function of a building material,
and the space factor can be improved, the cost can be reduced, and the productivity can be
improved by reducing the size and thickness of the apparatus and reducing the number of parts.
It can also be expected to be applied to sound reproduction devices and equipment used in living
spaces made of building materials such as houses, apartments and office buildings.
[0103]
21 magnet 23 yoke 24 magnetic circuit 25 magnetic gap 26 frame 27 vibrator 28 voice coil 28
A coil 28 B voice coil 28 C voice coil 28 D voice coil 100 living space 101 wall 102 ceiling 103
floor 104 pillar 105 door 106 window 200 audio system 201 main unit 202 right front speaker
203 left front speaker 204 right rear speaker 205 left rear speaker 206 center speaker 207
subwoofer 300 living space 301 front wall 302 ceiling material 303 floor material 304 pillar
material 305 door material 306 window material 320 partition material 321 partition 330 back
wall 331 Slit 400 Audio system 401 Main unit 402 Right front speaker 403 Left front speaker
404 Rear speaker 405 the left rear speaker 406 center speaker 407 subwoofer 410 wall
heartwood
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