close

Вход

Забыли?

вход по аккаунту

?

JP2008227806

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
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 JP2008227806
The present invention provides a bone conduction speaker device capable of transmitting
surround sound. SOLUTION: The vibrators 2L and 2R double as a pad function of glasses, and are
in contact with the nasal bones of a human body. The strings 13L and 13R abut against the
temple portion (temple) of the human head and the upper part of the outer ear, and the heel
portions 14L and 14R abut against the back sides of both ears. The vibrators 2LS and 2RS are
installed in the flanges 14L and 14R, respectively, and the vibrators 2LS and 2RS abut on the
back sides of both ears. The DSP unit 3 supplies drive signals for each transducer. The drive
signals of the transducers 2L and 2R correspond to the channels of the front L and the front R,
and the drive signals of the transducers 2LS and 2RS correspond to the channels of the rear L
and rear R. The drive signal of the vibrator 2L and the vibrator 2R includes the component of the
center channel. [Selected figure] Figure 1
Bone conduction speaker device
[0001]
The present invention relates to a bone conduction speaker device capable of transmitting
surround sound.
[0002]
BACKGROUND Conventionally, a bone conduction speaker device for transmitting acoustic
vibration to a human body via a skull has been widely used.
10-05-2019
1
As a method of attaching the bone conduction speaker device to the head, for example, one in
which a vibrator is attached to a string of glasses has been proposed (see, for example, Patent
Document 1).
[0003]
Further, there has been proposed one in which a vibrator is attached to the far end portion (a
both-aft backside contact portion) of a string of glasses so as to contact the back side of the outer
ear (see, for example, Patent Document 2). JP, 2004-320605, A JP, 2006-157318, A
[0004]
However, in the bone conduction speaker of Patent Document 1, the vibrator is attached to only
one side, and only monaural sound can be transmitted.
[0005]
In the bone conduction speaker of Patent Document 2, a vibrator is attached to the back side of
both ears, but also in this case, only stereo sound can be transmitted.
[0006]
Then, this invention aims at providing the bone conduction speaker apparatus which can
transmit surround sound.
[0007]
According to the bone conduction speaker device of the present invention, there are provided an
eyeglass frame mounted on a human head, and a plurality of rear channel vibrators installed at
positions in contact with the head on the back side of both ears of the eyeglass frame. And one or
a plurality of front channel vibrators installed at positions in contact with the nose bone in the
eyeglass frame, and a drive signal corresponding to a rear channel sound of multi-channel
surround to the rear channel vibrators. And a signal supply unit for supplying and supplying a
drive signal corresponding to front channel sound to the front channel vibrator.
[0008]
10-05-2019
2
In this configuration, the vibrator is attached to the head contact portion at a position
corresponding to the back side of both ears and the nose bone contact portion.
The transducer on the back side of both ears is supplied with a drive signal corresponding to the
rear channel sound, and the transducer in the nose bone abutment part is supplied with a drive
signal corresponding to the front channel sound.
Thereby, surround sound can be transmitted while being bone conduction.
In addition to the so-called glasses shape, the glasses frame also includes goggle shapes and the
like.
In the case of the eyeglass shape, the rear channel vibrator is attached to the end of the string
(so-called modern), and the front channel vibrator is attached to the nose bone contact portion
(so-called pad) of the glasses.
[0009]
The present invention further includes a head mount monitor for inputting an image signal and
displaying an image, and the signal supply unit supplies the image signal to the head mount
monitor.
[0010]
In this configuration, a head mounted monitor (head mounted display) that receives video signals
and displays video is provided.
The user can recognize the video of the same reproduction source as the audio, and the user can
experience the video and the surround audio only by wearing the head mounted display.
[0011]
Further, the present invention further includes a bass vibrator installed at a position in contact
10-05-2019
3
with a human body other than the head, and the signal supply unit supplies a drive signal
corresponding to a subwoofer sound to the bass vibrator. It is characterized by
[0012]
In this configuration, for example, the bass vibrator is installed at the position of the wrist or the
ankle.
Specifically, a band equipped with a bass vibrator may be wound around the wrist and ankle. By
supplying a drive signal corresponding to the sound of the subwoofer channel to the lowfrequency vibrator, the user can feel the vibration itself as a low-frequency sound, and can obtain
a more realistic sensation.
[0013]
According to the present invention, since the sound of each channel is transmitted by the
plurality of transducers abutted to the head on the back side of both ears and the transducers
abutted to the nasal bone, surround sound is obtained while being bone conduction. Can be
transmitted.
[0014]
A bone conduction speaker device according to an embodiment of the present invention will be
described with reference to the drawings.
FIG. 1 is a view showing the appearance of the bone conduction speaker device 10. FIG. 2 is a
block diagram showing the main configuration (DSP unit, vibrator) of the bone conduction
speaker device 10. In FIG. 2, the signal amplification circuit (amplifier), the A / D converter, and
the D / A converter are omitted.
[0015]
The bone conduction speaker device 10 includes a frame 1, a vibrator 2 L, a vibrator 2 R, a
vibrator 2 LS, a vibrator 2 RS, and a DSP unit 3.
10-05-2019
4
[0016]
The frame 1 has a so-called eyeglass shape, and a bridge 12 connecting two rims 11L and 11R,
the rims 11L and 11R, a chord 13L and 13R respectively connected to the two rims 11L and
11R, and a chord 13L and 13R , And the ridges 14L and 14R connected to the opposite end of
the rim connection point respectively.
Lenses are attached to the rim 11L and the rim 11R, respectively.
[0017]
The vibrator 2L and the vibrator 2R have a function of a pad (a nose-dressing) of glasses, or are
attached to the pad and are in contact with a nasal bone of a human body. The strings 13L and
13R are so-called temples, and abut on temples of the human head and upper outer ear. The
buttocks 14L and the buttocks 14R are so-called moderns (parts to be hung on the ears), and
abut on the back of both ears of the human body. The vibrator 2LS and the vibrator 2RS are
respectively installed in the collar portion 14L and the collar portion 14R, and the vibrator 2LS
and the vibrator 2RS are in contact with the back side of both ears.
[0018]
The vibrator 2 L, the vibrator 2 R, the vibrator 2 LS, and the vibrator 2 RS are connected to the
DSP unit 3. Although FIG. 1 shows a mode in which the DSP unit 3 is connected to the vibrator 2
LS, actually, each vibrator and the DSP unit 3 are connected by a wire embedded in a string or a
rim. There is. In addition, although the aspect of the wired connection is shown in FIG. 1, the
wireless connection may be by infrared rays or the like.
[0019]
The vibrator 2L, the vibrator 2R, the vibrator 2LS, and the vibrator 2RS are formed of giant
magnetostrictive elements, piezoelectric elements, etc., generate vibration based on a drive signal
input from the DSP unit 3, and transmit sound by bone conduction. I do.
10-05-2019
5
[0020]
In FIG. 2, the DSP unit 3 includes a control unit 31, an interface 32, and an interface 33, and
inputs an audio signal from another device (a reproducing device such as a CD player) via the
interface 32.
The input audio signal may be an analog audio signal or a digital audio signal. When an analog
audio signal is input, it is converted into a digital audio signal by an A / D converter (not shown).
The playback device (a playback function of a CD or the like) may be incorporated in the DSP
unit 3.
[0021]
The control unit 31 incorporates a DSP chip, and generates drive signals for the vibrator 2L, the
vibrator 2R, the vibrator 2LS, and the vibrator 2RS based on the audio signal input from the
interface 32. The drive signal is an analog signal (voltage control signal) for driving each vibrator.
These drive signals correspond to audio signals of each channel of multi-channel surround. That
is, the drive signal of the vibrator 2L corresponds to the front L channel, the drive signal of the
vibrator 2R corresponds to the front R channel, the drive signal of the vibrator 2LS corresponds
to the rear L channel, and the vibrator 2RS The drive signal of corresponds to the rear R channel.
However, the drive signal of the vibrator 2L and the vibrator 2R includes the component of the
center channel. The components of the center channel are included in the drive signals supplied
to the transducers 2L and 2R at a ratio of 1: 1.
[0022]
The control unit 31 supplies the generated drive signal to the vibrator 2L, the vibrator 2R, the
vibrator 2LS, and the vibrator 2RS through the interface 33.
[0023]
The vibrator 2L, the vibrator 2R, the vibrator 2LS, and the vibrator 2RS generate vibrations
(acoustic vibrations) based on the input drive signals.
10-05-2019
6
The sound can be transmitted by bone conduction through the head of the human body. Here,
the vibrator 2L and the vibrator 2R are installed at a position (pad of glasses) to be in contact
with the nasal bone, and the vibrator 2LS and the vibrator 2RS are in contact to the head on the
back side of both ears. It is installed in the position (modern glasses). Therefore, the user wearing
the bone conduction speaker device 10 can sense the sound of the front L channel from the front
left side, can sense the sound of the front R channel from the front right side, and sense the
sound of the center channel from the front center be able to. Also, the sound of the rear L
channel can be felt from the rear left side, and the sound of the rear R channel can be felt from
the rear right side.
[0024]
The inventor of the present application supplies different drive signals to the vibrator in contact
with the nasal bone and the vibrator in contact with the back of the both ears, and transmits
sound by bone conduction, so that voices come from each direction. It has been confirmed by
experiments that it can be felt like this.
[0025]
The vibrator 2L and the vibrator 2R may be integrated to be configured as one vibrator 2F.
In this case, all the components of the front L channel, the front R channel, and the center
channel are included in the drive signal of the vibrator 2F. In this case, the user wearing the bone
conduction speaker device 10 can sense the sound of the front L channel, the front R channel,
and the center channel from the front. Also in this case, it is possible to sense that different
sounds have arrived at the rear and the front (sound image localization feeling), and it is possible
to experience surround sound. Therefore, the user can sense surround sound without preparing a
plurality of speakers (air transmission speakers) separately.
[0026]
Further, as shown in FIG. 5, a plurality of transducers may be further provided. FIG. 5 is an
external view of a bone conduction speaker device 50 further including a plurality of
transducers. The same reference numerals as in FIG. 1 denote the same parts as in FIG. 1, and a
description thereof will be omitted. The bone conduction speaker device 50 includes a frame
101, a vibrator 2FL, a vibrator 2FR, a vibrator 2L, a vibrator 2R, a vibrator 2LS, a vibrator 2RS,
10-05-2019
7
and a DSP unit 300. The vibrator 2FL and the vibrator 2FR double as the pad function of the
glasses or are attached to the pad, and are abutted on the nasal bones of the human body. The
vibrator 2L and the vibrator 2R are disposed on the chord 13L and the chord 13R, and abut on
the temple portion of the human head. Also in this example, the vibrators 2FL and 2FR, the
vibrator 2L, the vibrator 2R, the vibrator 2LS, and the vibrator 2RS are connected to the DSP unit
3. The configuration of the DSP unit 3 is the same as that of FIG. 2, but in this example, the
vibrator 2FL and the vibrator 2FR are further connected.
[0027]
In the case of the bone conduction speaker device 50, the drive signal of the vibrator 2FL and the
vibrator 2FR includes the component of the center channel. In this case, the user wearing the
bone conduction speaker device 50 can separately sense the sound of the front L channel, the
front R channel, and the center channel from each direction, and can experience more realistic
surround sound.
[0028]
In addition, the control unit 31 may shift the phase of the drive signal supplied to each of the
vibrator 2L and the vibrator 2R and the drive signal supplied to each of the vibrator 2LS and the
vibrator 2RS. For example, since the vibrator 2LS and the vibrator 2RS are installed at a position
closer to the inner ear than the vibrator 2L and the vibrator 2R, a delay is inserted into the drive
signal supplied to these vibrators, and from behind It is also possible to configure the speech to
be coming.
[0029]
In addition, although the spectacles shape is shown as a flame | frame 1 in FIG. 1, as another
shape, for example, a goggle shape may be sufficient. Moreover, the head mounted display as
shown in FIG. 3 may be used.
[0030]
10-05-2019
8
FIG. 3 is a view showing the appearance of a bone conduction speaker device according to
another example. FIG. 4 is a block diagram showing the main configuration (DSP unit, vibrator) of
the bone conduction speaker device 100 shown in FIG. The same reference numerals as in FIGS.
1 and 2 denote the same parts as in FIGS. 1 and 2, and a description thereof will be omitted.
Further, in FIG. 4, a signal amplification circuit (amplifier), an A / D converter, and a D / A
converter are omitted.
[0031]
The bone conduction speaker device 100 shown in FIG. 3 includes a frame 101, a vibrator 2L, a
vibrator 2R, a vibrator 2LS, a vibrator 2RS, and a DSP unit 300.
[0032]
The frame 101 is a so-called head mounted display, and comprises a cabinet 103, strings 104L,
strings 104R, ridges 105L, and ridges 105R.
The cabinet 103 incorporates two LCDs and the like (not shown). The two LCDs in the cabinet
103 are connected to the DSP unit 300. The user can recognize an image within the field of view
by wearing the frame 101 on the head and viewing the two LCDs in the cabinet 103.
[0033]
The vibrator 2 </ b> L and the vibrator 2 </ b> R are installed at positions in the cabinet 103 that
are in contact with the nasal bones of the human body. Further, the vibrator 2LS is installed in
the collar portion 105L, and the vibrator 2RS is installed in the collar portion 105R. The
vibrators 2 </ b> LS and 2 </ b> RS abut against the back side of the outer ear, respectively,
when the hook portions 105 </ b> L and 105 </ b> R abut against the back side of the outer ear.
[0034]
The vibrator 2L, the vibrator 2R, the vibrator 2LS, and the vibrator 2RS are connected to the DSP
unit 300. Although FIG. 3 also shows a mode in which the DSP unit 300 is connected to the
vibrator 2 LS, in fact, each vibrator and the DSP unit 300 are connected by a wire or a wire
10-05-2019
9
embedded in a cabinet. There is. Further, the connection between each transducer and the DSP
unit 300 may be wireless connection by infrared rays or the like.
[0035]
The DSP unit 300 includes a control unit 301, an audio interface 302, a vibrator interface 303, a
video interface 304, and an LCD drive unit 305.
[0036]
The audio interface 302 inputs an audio signal from another device (reproduction device such as
a DVD player).
The video interface 304 inputs a video signal from the playback device. The audio signal and the
video signal may be either analog or digital. When an analog audio signal or an analog video
signal is input, it is converted into a digital signal by an A / D converter (not shown). Also in this
example, the reproduction device (the reproduction function of the DVD or the like) may be
incorporated in the DSP unit 300.
[0037]
The control unit 301 incorporates a DSP chip, and generates drive signals for the vibrator 2L, the
vibrator 2R, the vibrator 2LS, and the vibrator 2RS based on the audio signal input from the
audio interface 302. . These drive signals correspond to audio signals of each channel of multichannel surround. The control unit 301 also controls the LCD driving unit 305 based on the
video signal input from the video interface 304. The LCD driving unit 305 is an LCD driver
circuit, and is connected to the LCD built in the cabinet 103, and drives the LCD according to the
control of the control unit 301. That is, the LCD is driven to display a video according to the
input video signal.
[0038]
Also in this example, the user wearing the bone conduction speaker device 100 can sense the
sound of the front L channel from the front left side, can sense the sound of the front R channel
10-05-2019
10
from the front right side, and can forward the sound of the center channel You can feel it from
the center. Also, the sound of the rear L channel can be felt from the rear left side, and the sound
of the rear R channel can be felt from the rear right side. Also, the user wearing the bone
conduction speaker device 100 can recognize the image of the same reproduction source as the
audio.
[0039]
According to the bone conduction speaker device 100, it is possible to experience video and
surround sound simply by attaching a head mounted display without separately preparing a
speaker or the like, which is suitable for watching a movie.
[0040]
Note that the bone conduction speaker device 10 or the bone conduction speaker device 100
further includes a bass vibrator, and a band incorporating the bass vibrator is configured so that
the bass vibrator can be attached to a wrist, an ankle or the like. It is also good.
Humans can not hear voice from the vibrators attached to their wrists and ankles or the like by
bone conduction or meat conduction, but they can feel the vibration itself as bass and can obtain
a more realistic sensation. Also in this case, the DSP unit supplies the drive signal based on the
audio signal. The DSP unit supplies a drive signal corresponding to the sound of the subwoofer
channel to the bass transducer.
[0041]
Further, as shown in FIG. 6, a plurality of transducers may be further provided. FIG. 6 is a view
showing the appearance of a bone conduction speaker device according to another example of
the head mounted display. The same components as in FIG. 3 will be assigned the same reference
numerals and descriptions thereof will be omitted.
[0042]
The bone conduction speaker device 150 shown in FIG. 6 includes a frame 151, a vibrator 2FL, a
vibrator 2FR, a vibrator 2L, a vibrator 2R, a vibrator 2LS, a vibrator 2RS, a vibrator 2T, a vibrator
2B, and a DSP unit 300. Is equipped.
10-05-2019
11
[0043]
The frame 151 is a so-called head mounted display, and comprises a cabinet 103, a head band
152 connected to the cabinet 103, a head band 153, a head band 154, and a chin strap 155.
[0044]
The head band 152 is in contact with the head from the left and right temples of the human head
to the top of the head.
The headband 153 is in contact with the head from the forehead to the back of the head.
The headband 154 passes from the left and right sides of the cabinet 103 through the temples of
the human head and abuts the head on the back of the head. The head band 152 and the head
band 153 are joined at the top of the head. The head band 152 and the head band 154 are joined
at portions abutting on the left and right temples. Further, the headband 153 and the headband
154 are joined at a portion in contact with the back of the head. By bringing the head band 152,
the head 153, and the head band 154 into contact with the head, the user can wear a head
mounted display. In addition, the chin strap 155 is joined at the headband 152 and a portion
abutting the left and right temples of the headband 154, and the user can further improve the
wearing stability by hooking the chin strap 155 on the jaw. .
[0045]
Here, the vibrator 2FL and the vibrator 2FR are installed at positions in the cabinet 103 that are
in contact with the nasal bones of the human body. The vibrator 2L and the vibrator 2R are
disposed at portions abutting the left and right temples of the head band 152 and the head band
154. The vibrator 2LS is installed on the left side of the portion in contact with the back of the
headband 154, and the vibrator 2RS is installed on the right side of the portion in contact with
the back of the headband 154. The vibrator 2T is installed at a portion in contact with the top of
the head band 152 and the head band 153, and the vibrator 2B is installed at a portion in contact
with the jaw of the chin strap 155.
10-05-2019
12
[0046]
All these transducers are connected to the DSP unit 300. Although FIG. 6 also shows a mode in
which the DSP unit 300 is connected to the vibrator 2L, actually, each vibrator and the DSP unit
300 are connected by a wire embedded in a headband. . Further, the connection between each
transducer and the DSP unit 300 may be wireless connection by infrared rays or the like.
[0047]
In the case of the bone conduction speaker device 150, the drive signal of the vibrator 2FL and
the vibrator 2FR includes the component of the center channel. Also, drive signals corresponding
to the components of the front L channel to the vibrator 2L, the front R channel to the vibrator
2R, the rear L channel to the vibrator 2LS, and the rear R channel to the vibrator 2RS are
respectively supplied. Further, a drive signal corresponding to the sound source at the high
position is supplied to the vibrator 2T, and a drive signal corresponding to the sound source at
the low position is supplied to the vibrator 2B. Thus, a sound image moving from a high position
to a low position and a sound image moving from a low position to a high position can be
expressed.
[0048]
In this case, the user wearing the bone conduction speaker device 150 can sense the sound of
the front L channel, front R channel, center channel, rear L channel, rear R channel separately
from each direction, and has a sense of high and low Furthermore, it is possible to experience
realistic surround sound.
[0049]
In the present embodiment, a bone conduction speaker device including a frame, a vibrator, and
a DSP unit is shown. However, since the frame shown in the present embodiment has a so-called
eyeglass shape, it can be used for general eyeglass pads and strings The bone conduction
speaker device of the present embodiment is also completed by attaching a vibrator.
In this case, each vibrator may be provided with a mechanism (adhesive tape, clip, etc.)
attachable to a pad or a string. Thus, the aspect which attached the vibrator | oscillator to
10-05-2019
13
common spectacles is also contained in the technical scope of the bone conduction speaker
apparatus of this invention.
[0050]
Further, in this embodiment, an example is shown in which the vibrator is attached to the
buttocks (modern) in contact with the back sides of both ears, but in the case of a helmet type or
goggle type head mounted display, a position corresponding to the back sides of both ears The
vibrator may be attached to the head contact portion and the nose bone contact portion of This
aspect is also included in the technical scope of the bone conduction speaker device of the
present invention.
[0051]
FIG. 1 is a view showing an appearance of a bone conduction speaker device 10; FIG. 1 is a block
diagram showing a configuration of a bone conduction speaker device 10. It is a figure which
shows the external appearance of the bone conduction speaker apparatus 100 of another
example. It is a block diagram which shows the structure of the bone conduction speaker
apparatus 100 of another example. It is a figure which shows the external appearance of the
bone conduction speaker apparatus 50 of another example. It is a figure which shows the
external appearance of the bone conduction speaker apparatus 150 of another example.
Explanation of sign
[0052]
1-frame 2L, 2R, 2LS, 2RS-oscillator 3-DSP unit
10-05-2019
14
Документ
Категория
Без категории
Просмотров
0
Размер файла
24 Кб
Теги
jp2008227806
1/--страниц
Пожаловаться на содержимое документа