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JP2018152919

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DESCRIPTION JP2018152919
Abstract: To provide a wearable speaker system capable of obtaining a higher sense of reality by
reproducing bass. A wearable speaker system includes an enclosure (101), and in a first end area
of the enclosure (101), a first speaker unit (102L) and a first opening (104L) which is an end of a
first bass reflex duct are disposed. The second speaker unit 102R and the second opening 104R
which is the end of the second bass reflex duct are disposed in the second end region, and the
first and second speaker units 102L and 102R are each configured of the speaker 103. And a
space between the speaker 103 and the passive radiator 105 which each has the passive radiator
105 in the opposite direction of the speaker 103 and which the first and second speaker units
102L and 102R have, respectively. Connected to the space. [Selected figure] Figure 1
ウェアラブルスピーカシステム
[0001]
The present invention relates to a wearable speaker system, and more particularly to a wearable
speaker system that a listener wears and uses in a part other than the ear.
[0002]
As a speaker system for outputting sound, for example, there is one built in a television receiver
or the like.
However, the built-in speaker of the speaker system does not have a large aperture and can not
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1
obtain a large volume. In addition, the bass can not be sufficiently reproduced and the sense of
reality may be insufficient. In order to obtain a sense of reality, a speaker system or a headphone
having a large aperture speaker is often used.
[0003]
In the case of using a speaker system having a large aperture speaker, a certain amount of space
is required, which is not suitable for enjoying music while traveling. When headphones are used,
music and the like can be enjoyed while moving, but there is a problem that a listener using the
headphones can not hear surrounding sounds. Moreover, in the case of headphones, there is also
a problem that the sound image feels tired after prolonged use in order to be localized in the
head of the listener.
[0004]
In order to solve the above problems, Patent Documents 1-4 disclose wearable speaker systems
that are worn on the body of a listener and do not block the ears of the listener.
[0005]
Patent Document 1 discloses a neck-type wearable speaker device, in which a speaker is located
below a jaw of a listener and directed toward the ear.
Patent Documents 2 and 3 disclose a wearable speaker device in which speakers are provided on
both sides of a neck rest, a speaker for the right ear is located on the right shoulder, and a
speaker for the left ear is on the left shoulder. positioned.
[0006]
Patent Document 4 discloses an annular neck-type wearable speaker device, and in addition to a
speaker, a passive radiator or bass reflex port is provided, and unlike Patent Literature 1-3, bass
reproduction is possible, and a listener Can give a sense of presence.
[0007]
JP, 2009-201088, A JP, 2008-263374, A JP, 8-511151, A International Publication No.
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2
2016/039245
[0008]
As described above, in the wearable speaker system described in Patent Documents 1 to 3, no
mechanism relating to the reproduction of bass is provided.
Further, in the wearable speaker device disclosed in Patent Document 4, the speaker, the passive
radiator, and the bass reflex port are separated from each other, the bass may not be reproduced
sufficiently in some cases, and the sense of reality may be insufficient.
[0009]
The present invention has been made in view of the above-described circumstances, and it is an
object of the present invention to provide a wearable speaker system in which a higher sense of
reality can be obtained by reproduction of bass.
[0010]
In order to solve the above-mentioned subject, the wearable speaker system concerning the 1st
technical means of the present invention is a wearable speaker system provided with a U-shaped
enclosure, and, in the first end region of the enclosure, a first speaker A unit and an end of the
first bass reflex duct, and a second speaker unit and an end of the second bass reflex duct are
disposed in the second end region of the enclosure; Each speaker unit has a speaker and a
passive radiator opposite to the speaker, and a space between the speaker and the passive
radiator which each of the first and second speaker units has is a space in the enclosure. It is
characterized in that it is connected.
[0011]
A second technical means of the present invention is characterized in that in the first technical
means of the present invention, the main body portions of the first and second bass reflex ducts
intersect at a central portion of the enclosure.
[0012]
According to a third technical means of the present invention, in the first or second technical
means of the present invention, the first end area and the second end area of the enclosure are in
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3
communication with each other. Do.
[0013]
According to a fourth technical means of the present invention, in the first or second technical
means of the present invention, a partition that separates a plurality of spaces between the first
end area and the second end area of the enclosure into a plurality of spaces It is characterized by
having.
[0014]
According to a fifth technical means of the present invention, in any one of the first to fourth
technical means of the present invention, the end of the first bass reflex duct and the second bass
reflex when the enclosure is hung on the neck of a listener Each end of the duct is characterized
in that it is located below the ear of the listener.
[0015]
According to a sixth technical means of the present invention, in any one of the first to fifth
technical means of the present invention, when the enclosure is hung on the neck of the listener,
the speaker unit is positioned on the upper chest of the listener It features.
[0016]
A seventh technical means of the present invention is characterized in that, in any one of the first
to sixth technical means of the present invention, a first shock absorbing material is provided
inside the U-shape of the enclosure.
[0017]
An eighth technical means of the present invention is the method according to any of the fifth to
seventh technical means of the present invention, wherein the first end area and the second end
area of the enclosure and the listener are selected. It is characterized in that two buffer members
are provided.
[0018]
According to the present invention, it is possible to provide a wearable speaker system capable of
obtaining a higher sense of reality by reproducing bass.
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[0019]
1 is a front view of a wearable speaker system according to Embodiment 1 of the present
invention.
1 is a cross-sectional view of a wearable speaker system according to Embodiment 1 of the
present invention.
It is a figure for demonstrating the wearable speaker system which concerns on Embodiment 1 of
this invention.
It is a front perspective view of the wearable speaker system which concerns on Embodiment 2
of this invention.
It is a front perspective view of the wearable speaker system which concerns on Embodiment 2
of this invention.
It is a front perspective view of the wearable speaker system which concerns on Embodiment 3
of this invention.
It is a front perspective view of the wearable speaker system which concerns on Embodiment 3
of this invention.
It is a front perspective view of the wearable speaker system which concerns on Embodiment 4
of this invention.
It is a transparent front view of the wearable speaker system which concerns on Embodiment 5
of this invention.
[0020]
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5
Hereinafter, preferred embodiments of the wearable speaker system of the present invention will
be described with reference to the drawings.
In addition, in the following description, the structure which attached | subjected the same code |
symbol also in different drawings may abbreviate | omit the description as it is the same thing.
Further, although a plurality of embodiments will be described, the embodiments can be
implemented in any combination as long as combinations are possible.
[0021]
First Embodiment FIG. 1 is a front view of a wearable speaker system 100 according to a first
embodiment.
The wearable speaker system 100 includes an enclosure 101. The enclosure 101 is substantially
U-shaped when viewed from the front. The shape when the enclosure 101 is viewed from the
front can also be expressed as a horseshoe shape, a wedge shape, or the like. Enclosure 101
includes a portion extending from the central portion in both lower left and lower right directions
in FIG. 1 and a portion extending downward in FIG. 1 from the portion toward both ends of
enclosure 101.
[0022]
In addition, as described later with reference to FIG. 3 as one of the use states of the wearable
speaker system 100, the central portion of the enclosure 101 is positioned behind the listener's
neck, and the other portion of the enclosure 101 is There is a "necking condition" in which the
head is positioned diagonally forward from the back of the neck through both sides of the neck.
In the following, the left-right direction and the left-right relationship regarding the wearable
speaker system 100 will be described as the left-right direction and the left-right relationship for
the listener who has the wearable speaker system 100 in a necked state. The "ear" and "right ear"
are consistent with what is determined by the listener's right and left.) Therefore, in the following
description, the right and left direction and the left and right relationship with respect to the
drawings may be the opposite direction and the reverse relationship.
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[0023]
A portion of a predetermined length from the left end of both ends of the enclosure 101 is
referred to as a first end area (left end area), and a portion of a predetermined length from the
right end of the both ends of the enclosure 101 And the second end area (right end area). In the
enclosure 101, the first speaker unit 102L and the first opening 104L which is the end of the
first bass reflex duct are arranged in this order from the tip on the left side, and the second
loudspeaker unit 102R and the second bass reflex duct from the tip on the right The opening
104R which is the end is disposed in this order. The length of the first end area (left end area) of
the enclosure 101 (the “predetermined length from the left end of the both ends of the
enclosure 101”) is the first speaker unit 102L and the first opening And the length of the
second end area (right end area) of the enclosure 101 (the "predetermined length from the right
end of the both ends of the enclosure 101") defined as a length sufficient to include the 104L. Is
defined as having a length sufficient to include the second speaker unit 102R and the second
opening 104R.
[0024]
FIG. 2 is a cross-sectional view of the first end region (left end region) of the enclosure 101 along
the line I-I in FIG. FIG. 2 shows a cross section of a part of the enclosure 101, a cross section of
the first speaker unit 102L, and a cross section of the first opening 104L. A cross-sectional view
on the way from the tip of the second end area (right end area) of the enclosure 101 to the
central part can also be obtained by reversing the right and left in the illustration of FIG.
Illustration is omitted.
[0025]
The first speaker unit 102L includes a speaker 103L having an opening directed upward in FIG.
2 and a passive radiator 105L having an opening directed downward in FIG. In other words, the
passive radiator 105L is provided on the back of the speaker 103L. In addition, the speaker 103L
and the passive radiator 105L are provided in the first speaker unit 102L in the opposite
direction. The speaker 103L has a frame 103a forming the speaker 103L, a magnetic circuit
103b supported by the frame 103a, and a diaphragm 103c connected to the magnetic circuit
103b and the frame 103a. The magnetic circuit 103b includes a magnet and a voice coil (not
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7
shown), and the voice coil is connected to a cable (not shown), and vibrates the diaphragm 103c
in response to a signal supplied to the cable to generate sound.
[0026]
The passive radiator 105L has a frame 105a forming the passive radiator 105L and a diaphragm
105c connected to the frame 105a. In the passive radiator 105L, the diaphragm 105c vibrates in
response to the fluctuation of the air pressure in the first speaker unit 102L due to the vibration
of the diaphragm 103c of the speaker 103L, and generates sound. As described above, the
diaphragm 105c of the passive radiator 105L vibrates according to the change in air pressure,
and is not directly vibrated by the magnetic circuit. Therefore, the passive radiator 105L mainly
emits the sound generated by the speaker 103L. The low frequency of the pressure fluctuation
will radiate a low frequency to the outside of the first speaker unit 102L.
[0027]
Therefore, even if the speaker 103L has a small diameter, the bass is emphasized and reproduced
by the passive radiator 105L disposed in the opposite direction on the back of the speaker 103L,
and the listener can obtain a high sense of reality.
[0028]
In the present embodiment, the space in the enclosure 101 is connected to the space between
the speaker 103L and the passive radiator 105L.
Further, in the enclosure 101, a hollow space (internal space) is formed in which the first end
area (left end area) and the second end area (right end area) communicate with each other.
Therefore, the variation of the air pressure in the first speaker unit 102L due to the vibration of
the diaphragm 103c of the speaker 103L is also transmitted to the internal space of the
enclosure 101. As a result, the enclosure 101 also vibrates in response to the vibration of the
diaphragm 103c of the speaker 103L, and it is possible to generate a certain degree of sound.
Similarly, the pressure fluctuation in the second speaker unit 102R due to the vibration of the
diaphragm 103c of the speaker 103R is also transmitted to the internal space of the enclosure
101. As a result, the enclosure 101 also vibrates in response to the vibration of the diaphragm
103c of the speaker 103R, and it is possible to generate a certain degree of sound.
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8
[0029]
Further, since the space in the enclosure 101 communicates the first end area (left end area) and
the second end area (right end area), the vibration of the diaphragm 103c of the speaker 103L of
the first speaker unit 102L A change in air pressure can reach the second speaker unit 102R.
Therefore, the pressure change due to the vibration of the diaphragm 103c of the speaker 103L
affects the vibration of the diaphragm of the passive radiator (not shown) of the second speaker
unit 102R. Similarly, the change in atmospheric pressure due to the vibration of the diaphragm
of the speaker 103R of the second speaker unit 102R reaches the first speaker unit 102L and
affects the vibration of the diaphragm 103c of the passive radiator 105L of the first speaker unit
102L. . For this reason, comparing the reproduction of sound between the case of using the
conventional headphones that close both ears and the case of using the wearable speaker system
100, the wearable speaker system can hear even the sound that only the left ear can hear when
using the conventional headphones. In the case of 100, some components are also generated
from the passive radiator of the second speaker unit 102R. Further, even if the sound is audible
only to the right ear in the case of the conventional headphone, a part of the component is also
generated from the passive radiator 105L of the first speaker unit 102L in the case of the
wearable speaker system 100. Therefore, to the listener, even if the left and right voices are not
equal, they are mixed and reproduced from the left and right speakers and can be heard, so that
the localization position of the sound image can be felt as if it was located forward from inside
the listener's head. It can enhance the sense of reality.
[0030]
In the internal space of the enclosure 101, a cable for driving the speaker 103L may be disposed
in the internal space. Further, a drive circuit and a drive power supply for supplying a signal to
the cable and driving the speaker 103L may be disposed in the internal space.
[0031]
Further, as described above, the first opening 104L is an end of the first bass reflex duct 106L.
The other end of the first bass reflex duct 106L extends from the first speaker unit 102L toward
the space in the enclosure 101. Therefore, when the air pressure inside the enclosure 101
fluctuates according to the vibration of the diaphragm 103c of the speaker 103L, air flows in and
out of the first opening 104L through the other end of the first bass reflex duct 106L. With the
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air coming in and out, the listener can feel the bass.
[0032]
Although the height of the first speaker unit 102L and the height of the enclosure 101 are
different in FIG. 2, the unity of the first speaker unit 102L and the enclosure 101 is further
increased with the same height. Also, decorative effects can be obtained that cause the viewer of
the wearable speaker system 100 to have an aesthetic appearance. Further, in FIG. 1, although
the width in the lateral direction of the first speaker unit 102L and the second speaker unit 102R
is different from the width of the enclosure 101, the lateral width of the speaker unit 102L and
the second speaker unit 102R It is also possible to make it the same as the width of 101.
[0033]
In FIG. 3, the wearable speaker system 100 is placed on the neck of the listener so that the first
end area and the second end area of the enclosure 101 are located in front of the neck and the
central part of the enclosure 101 is located behind the neck It is a figure which shows the state
(head hanging state) which was made. When the wearable speaker system 100 is hung on the
neck of the listener as shown in FIG. 3, it is preferable that the first speaker units 102L and 102R
be located at the upper chest part of the listener. For example, the first speaker unit 102L and
the second speaker unit 102R are preferably located on the clavicle or at the top of the breast. As
a result, when the wearable speaker system 100 is hung with the openings of the speakers 103L
and 103R facing upward, the listener can feel the vibration of the bass emitted from the passive
radiators 105L and 105R with the body. In addition, since a part of the enclosure 101 also
contacts the back and upper chest of the listener's neck, the user may feel the vibration of the
enclosure 101 due to the vibration of the diaphragm 103c of each of the speakers 103L and
103R and the voice generated by the vibration with the body it can. Since the enclosure 101 is
arranged so as to surround the neck of the listener, the listener can feel that the sound generated
by the vibration and vibration of the enclosure 101 is emitted from the periphery of the body to
obtain a higher sense of reality Can.
[0034]
When the wearable speaker system 100 is hung on the neck of the listener as shown in FIG. 3, it
is preferable that the first opening 104L and the second opening 104R be located below the ears
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10
YL and YR of the listener. As a result, the listener can hear the low-pitched sound generated by
the air flowing in and out of the first opening 104L from the other end of the first bass reflex
duct 106L from the other end of the first bass reflex duct 106L due to the vibration of the
diaphragm 103c of the speaker 103L. In addition, the listener can hear the low-pitched sound
generated by the air flowing in and out of the second opening 104R from the other end of the
second bass reflex duct from the other end of the second bass reflex duct due to the vibration of
the diaphragm 103c of the speaker 103R. Therefore, a higher sense of reality can be obtained.
[0035]
As described above, according to the present embodiment, the speaker 103L and the passive
radiator 105L, the speaker 103R and the passive radiator 105R, and the first bass reflex duct
106L and the second bass reflex duct 106R make it possible to reproduce bass, and the listener
can You can get a higher sense of reality.
[0036]
In addition, even if the wearable speaker system 100 is in a necked state, unlike the headphones,
the ears of the listener are not blocked.
Therefore, since the sound image is not localized in the head of the listener, it is less likely to feel
tired. Also, by not blocking the listener's ear, the listener can pay attention to the surroundings in
order to avoid danger and the like because the listener can hear surrounding sounds. In addition,
by putting the wearable speaker system 100 in a necked state, since it is mounted at a position
close to the ear, the sound field does not change even if it moves, and sufficient sound pressure
can be obtained even with a small volume. .
[0037]
As a use scene of the wearable speaker system 100 according to the present embodiment as
described above, the user listens to music etc. in combination with a music playback device, a
smartphone or a tablet type terminal, or adds a voice to video displayed on the screen of the
smartphone or tablet terminal. There is a scene to watch at In addition, it is also possible for the
elderly person to reproduce the sound of a television which is difficult to hear due to the decline
in hearing ability by the wearable speaker system 100 at the ear. In addition, by combining with
virtual reality and augmented reality systems, you can gain a sense of realism through sight and
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hearing.
[0038]
Second Embodiment FIG. 4 and FIG. 5 are front transparent views when each of the wearable
speaker systems 100 according to a second embodiment of the present invention is viewed from
the front.
[0039]
FIG. 4 is a diagram showing main parts of the first bass reflex duct 106L and the second bass
reflex duct 106R by dotted lines.
The lengths of the main body portions of the first bass reflex duct 106L and the second bass
reflex duct 106R can be arbitrarily selected according to which range of the low frequency range
of the sound emitted from the speakers 103L and 103R is to be emphasized. In general,
increasing the length of the main portion of the first bass reflex duct 106L and the second bass
reflex duct 106R emphasizes the lower frequency range.
[0040]
Also, the first bass reflex duct 106L and the second bass reflex duct 106R may be related to the
localization position of the sound as described below. For example, as shown in FIG. 5, the
lengths of the respective main body portions of the first bass reflex duct 106L and the second
bass reflex duct 106R are further increased, and the other ends 107L and 107R are positioned
beyond the central portion of the enclosure 101. May be In other words, the main body portions
of the first bass reflex duct 106L and the second bass reflex duct 106R may intersect in a region
including the central portion of the enclosure 101.
[0041]
According to the configuration of the first bass reflex duct 106L and the second bass reflex duct
106R, the first bass reflex duct 106L guides the pressure fluctuation corresponding to the sound
generated by the second speaker unit 102R to the first opening 104L, Pressure fluctuation
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corresponding to the sound generated by the first speaker unit 102L is guided to the second
opening 104R by the second bass reflex duct 106R. For this reason, the air corresponding to the
sound generated by the second speaker unit 102R comes in and out of the first opening 104L,
and the air corresponding to the sound generated by the first speaker unit 102L flows in and out
of the second opening 104R. Will occur.
[0042]
Therefore, the listener sounds as if the voice heard on the left ear is mixed with the right voice
and the voice heard on the right ear is mixed with the left voice, so it seems that the localization
position of the voice has moved forward. As a result, a higher sense of reality can be obtained
than the configuration shown in FIG.
[0043]
Third Embodiment FIG. 6 and FIG. 7 are front transparent views of the wearable speaker systems
100 according to a third embodiment of the present invention as viewed from the front.
[0044]
In FIG. 6 and FIG. 7, the part disposed inside the enclosure 101 is indicated by a dotted line.
For example, in FIG. 6, main parts of the first bass reflex duct 106L and the second bass reflex
duct 106R are shown by dotted lines, and it is also shown by dotted lines that the partition 108
is disposed at the center of the enclosure 101. .
[0045]
The partition wall 108 is a member that divides the internal space of the enclosure 101.
Due to the partition wall 108, the internal space of the enclosure 101 is divided into an internal
space 1081 on the side of the first end area (left end area) and an internal space 1082 on the
side of the second end area (right end area). It is separated into space. The inner space 1081 is
connected to the first opening 104L and the first speaker unit 102L, and the inner space 1082 is
connected to the second opening 104R and the second speaker unit 102R. Therefore, the
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pressure fluctuation in the inner space 1081 is not transmitted to the inner space 1082, and the
pressure fluctuation in the inner space 1082 is not transmitted to the inner space 1081.
[0046]
For this reason, it is possible to hear so-called crisp sound due to high separation of the left and
right separation characteristics of the sound generated by the first speaker unit 102L and the
second speaker unit 102R by the partition wall 108.
[0047]
Note that a plurality of partition walls 108 can be provided.
As a result, it is possible to adjust the inner space 1081 and the inner space 1082 to a length
equal to or less than half of the enclosure 101.
[0048]
FIG. 7 is a view showing a state in which two partitions 108L and 108R are arranged in the
enclosure 101. As shown in FIG. Drive power sources and drive circuits for driving the speakers
103L and 103R and an input part of an external sound source can be disposed between the two
partition walls 108L and 108R. If, for example, a phone jack is provided in the enclosure 101 as
an external sound source input section, air may flow in and out through the phone jack, so the
acoustic characteristics of the wearable speaker system 100 may change. By providing a phone
jack in between, it is possible to prevent a change in acoustic characteristics from being
introduced.
[0049]
Fourth Embodiment FIG. 8 is a front view of a wearable speaker system 100 according to a
fourth embodiment of the present invention. The difference from the previous embodiments is
that a neck cushioning member 109 is formed on the inside of the U-shape of the enclosure 101
by the cushioning materials 110L, 110C and 110R. The neck cushioning member 109 may be
referred to as a first cushioning member.
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[0050]
The neckrest buffer member 109 reduces the vibration of the enclosure 101 caused by the
vibration of the diaphragm 103b of each of the speakers 103L and 103R when the wearable
speaker system 100 is put on the neck as shown in FIG. The vibration of the enclosure 101 is
prevented from being transmitted directly. If the medium and high sound is emitted from the first
speaker unit 102L and the second speaker unit 102 and the vibration due to the high and low
sound is transmitted to the rear of the listener's neck through the enclosure 101, the listener
may feel uncomfortable. Therefore, it is possible to eliminate the discomfort of the listener due to
the middle and high tones by transmitting the vibrations due to the middle and high tones to the
listener via the neckrest buffer member 109 which attenuates by the shock absorbing materials
110L, 110C and 110R. As a material of the shock absorbing material, for example, a material
capable of expansion and contraction such as rubber, foamed polyurethane or a spring can be
used.
[0051]
Fifth Embodiment FIG. 9 is a left side view of a wearable speaker system 100 according to a fifth
embodiment of the present invention. The difference from the previous embodiments is that the
chest cushioning member 111L is provided on the lower surface of the first end region of the
enclosure 101 via the cushioning materials 112L and 113L. Although the right side view of the
wearable speaker system 100 is not shown in FIG. 9, the right side surface of the wearable
speaker system 100 can also have the same structure as viewed from the left side. The chest
cushioning member may be referred to as a second cushioning member.
[0052]
The shock absorbing materials 112L and 113L reduce the vibration of the enclosure 101 caused
by the vibration of the diaphragm 106b of each of the speakers 103L and 103R when the
wearable speaker system 100 is in the necked state as shown in FIG. The vibration of the
enclosure 101 is prevented from being transmitted directly to the upper chest part. When middle
to high sound is emitted from the speakers 103L and 103R, if the vibration due to the high to
high sound is transmitted to the upper chest of the listener via the enclosure 101, the listener
may feel uncomfortable. Therefore, by transmitting middle and high pitched sound to the listener
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through the chest cushioning member 111L, the bass is mainly transmitted to the listener
through the chest cushioning member 111L, and the sense of discomfort of the listener can be
eliminated. As a material of the shock absorbing material, for example, a material capable of
expansion and contraction such as rubber, foamed polyurethane or a spring can be used.
[0053]
100: wearable speaker system, 101: enclosure, 102L, 102R: speaker unit, 103L, 103R: speaker,
104L: first opening, 104R: second opening, 103a: speaker frame, 103b: magnetic circuit (with
permanent magnet Voice coil), 103c ... diaphragm, 105a ... passive radiator frame, 105c ...
diaphragm, 106L ... bass reflex duct.
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