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JP2007068074

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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
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DESCRIPTION JP2007068074
PROBLEM TO BE SOLVED: To appropriately vibrate each part of a wide range of vibrators so that
sound can be emitted from each part. A vibration member (26A) outputs sound by vibrating. The
vibrator 27A is attached to the vibrating member 26A, vibrates the vibrating member 26A based
on the first audio signal, and the vibrating member 27B is attached to the vibrating plate 26A so
as to have a predetermined distance from the vibrator 27A. By vibrating the vibration member
26A based on the second sound signal, it is possible to appropriately vibrate each portion of the
wide range of the vibration member 26A and to emit sound from each portion. The present
invention is applicable to audio output devices and rooms. [Selected figure] Figure 2
Audio output device and method, program, and room
[0001]
The present invention relates to an audio output device and method, a program, and a room, and
more particularly, to an audio output device and method for outputting an audio, a program, and
a room.
[0002]
At the same time as the function of the speaker, a screen speaker device is used which also
serves as a screen for dividing a room or blinding the room.
[0003]
In the conventional screen speaker device, as shown in FIG. 1, the vibrator 13-1 is mounted on
the vibrating member 14-1, and the vibrator 13-2 is mounted on the vibrating member 14-2.
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[0004]
The vibrator 13-1 vibrates the vibrating member 14-1 based on an audio signal supplied from
the signal processing unit 12-1 and subjected to predetermined signal processing on the sound
collected by the microphone 11-1. Output the sound.
Further, the vibrator 13-2 is supplied from the signal processing unit 12-2 in the same manner
as the vibrator 13-1 and is a sound signal obtained by performing predetermined signal
processing on the sound collected by the microphone 11-2. Based on the vibration of the
vibrating member 14-2, sound is output.
[0005]
As described above, in the conventional screen speaker apparatus, one vibrator vibrates one
vibrating member to output sound.
[0006]
In addition, it has a waterproof speaker with a vibrator attached to the ceiling panel or wall panel
of the bathroom, and an actuator attached to a member in the bathroom other than the bathtub
such as a bathtub apron of the bathroom, a wall panel near the bathtub, a counter and a ceiling
panel. There is also a sound reproducing apparatus characterized in that medium-level and highpitched sounds are reproduced by a waterproof speaker, and members in a bathroom are
vibrated by an actuator to reproduce a low-pitched sound (for example, Patent Document 1).
[0007]
JP 2001-157642 A
[0008]
However, the conventional screen speaker apparatus has a problem that it is not possible to
output sound in a direction in which the microphone is not facing at the time of sound collection.
[0009]
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For example, in the conventional screen speaker apparatus, the sound collected by the
microphone 11-1 is input to the vibrator 13-1, thereby vibrating the vibrating member 14-1 to
output the sound, and the microphone 11-2 The sound collected at step (d) is input to the
vibrator 13-2 to vibrate the vibrating member 14-2 and output the sound.
With such a method, it is not possible to reproduce the sound existing in the middle between the
microphone 11-1 and the microphone 11-2, and the sound collected from each of the
microphone 11-1 and the microphone 11-2 is It becomes a discretely arranged sound field, and
the user can not obtain the realism as being there.
[0010]
Further, the sound reproducing apparatus disclosed in Japanese Patent Application Laid-Open
No. 2001-157642 can not output sound in the direction in which the microphone does not exist
at the time of sound collection, and also assumes that the room is not a general room. Thus, the
low-pitched sound was reproduced by the waterproof speaker, and the bass was reproduced by
vibrating the member by the actuator attached to the member inside the bathroom.
[0011]
Furthermore, in general speakers, when creating sound between two speakers, it is created by
mixing the sounds of the two speakers in the air, so if it gets out of the so-called sweet spot, it
will be uncomfortable for the user. It is possible that a phenomenon such as loss of sound
between the speakers, which is called “speaking sound” or “dropout” may occur.
[0012]
The present invention has been made in view of such a situation, and is intended to appropriately
vibrate each part of a wide range of the vibrating material so that sound can be emitted from
each part.
[0013]
One aspect (first aspect) of the present invention is a vibration material that outputs the voice by
vibrating in a voice output device that converts each of the first voice signal and the second voice
signal into voice and outputs the voice. And a first vibrator mounted on the vibrator and
vibrating the vibrator based on the first audio signal, and the diaphragm so as to have a
predetermined distance from the first vibrator. It is an audio | voice output device equipped with
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the 2nd vibrator | oscillator which is mounted | worn and which vibrates the said vibration
material based on the said 2nd audio | voice signal.
[0014]
The signal processing apparatus may further include processing means for performing
predetermined signal processing on each of the first audio signal and the second audio signal.
[0015]
The processing means may comprise delay processing means for delaying each of the first audio
signal and the second audio signal.
[0016]
The processing means may comprise filtering means for passing a predetermined frequency
band component of the respective components of the first audio signal and the second audio
signal.
[0017]
The processing means may comprise gain adjustment processing means for adjusting the
respective gains of the first audio signal and the second audio signal.
[0018]
According to one aspect (a first aspect) of the present invention, a vibration member that outputs
the sound by vibration and the vibration member are attached, and the vibration member is
vibrated based on the first sound signal. A first vibrator, and a second vibrator mounted on the
diaphragm so as to have a predetermined distance from the first vibrator and vibrating the
vibrator based on the second audio signal; This is an audio output method (program) for
performing predetermined signal processing on each of the first audio signal and the second
audio signal.
[0019]
In one aspect (a first aspect) of the present invention, a vibrating member that outputs the sound
by vibration and the vibrating member are mounted, and vibrate the vibrating member based on
the first audio signal. A first vibrator, and a second vibrator mounted on the diaphragm so as to
have a predetermined distance from the first vibrator and vibrating the vibrator based on the
second audio signal; Is provided.
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[0020]
According to one aspect (a second aspect) of the present invention, a vibrating member that
outputs the sound by vibrating and the vibrating member are attached to the vibrating member,
and the vibrating member is vibrated based on a first audio signal. And a second vibrator
mounted on the diaphragm so as to have a predetermined distance from the first vibrator and
vibrating the vibrator based on a second audio signal. The room is divided by
[0021]
The signal processing apparatus may further include processing means for performing
predetermined signal processing on each of the first audio signal and the second audio signal.
[0022]
The apparatus further comprises detection means for detecting the position of the user, and the
processing means performs predetermined signal processing on each of the first audio signal and
the second audio signal based on the detected position. be able to.
[0023]
The four sides can be surrounded by the wall.
[0024]
In one aspect (second aspect) of the present invention, a vibration member that outputs the
sound by vibration and the vibration member are attached, and the vibration member is vibrated
based on a first sound signal. And a second vibrator mounted on the vibrating plate at a
predetermined distance from the first vibrator and vibrating the vibrating material based on a
second audio signal. It is divided by the wall.
[0025]
As described above, according to one aspect (the first aspect) of the present invention, it is
possible to appropriately vibrate each part of the wide range of the vibrating member and to emit
sound from each part.
[0026]
According to one aspect (the second aspect) of the present invention, it is possible to
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appropriately vibrate each part of the wide range of the wall by the vibrating material and to
emit sound from each part.
[0027]
The embodiment of the present invention will be described below. The correspondence between
the constituent requirements of the present invention and the embodiment described in the
detailed description of the invention is as follows.
This description is to confirm that the embodiments supporting the present invention are
described in the detailed description of the invention.
Therefore, although described in the detailed description of the invention, even if there is an
embodiment which is not described herein as an embodiment corresponding to the constituent
requirements of the present invention, the fact is that It does not mean that the embodiment does
not correspond to the constituent requirements.
Conversely, even if the embodiments are described herein as corresponding to configuration
requirements, that means that the embodiments do not correspond to configuration
requirements other than the configuration requirements. It is not something to do.
[0028]
The sound output device (for example, the screen speaker device 21 of FIG. 2) according to one
aspect (first side) of the present invention is a vibration member (for example, vibration members
26A to 26C of FIG. 2) that outputs sound by vibrating. And a first vibrator (for example, the
vibrator 27A, the vibrator 27C, or the vibrator 27E in FIG. 2) mounted on the vibrator and
vibrating the vibrator based on the first audio signal; The second vibrator (for example, the
vibrator 27B and the vibrator 27D in FIG. 2) which is attached to the diaphragm so as to have a
predetermined distance from the vibrator and vibrates the vibrating material based on the
second audio signal. Or the vibrator 27F).
[0029]
It is possible to further include processing means (for example, the signal processing unit 42 in
FIG. 3) that performs predetermined signal processing on each of the first audio signal and the
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second audio signal.
[0030]
The processing means may comprise delay processing means (eg, delay processing unit 53 of
FIG. 3) for delaying each of the first audio signal and the second audio signal.
[0031]
The processing means may comprise filter processing means (for example, the filter processing
unit 54 of FIG. 3) for passing a predetermined frequency band component of the respective
components of the first audio signal and the second audio signal.
[0032]
The processing means may comprise gain adjustment processing means (e.g. gain adjustment
unit 55 of FIG. 3) for adjusting the respective gains of the first audio signal and the second audio
signal.
[0033]
The audio output method or program according to one aspect (the first aspect) of the present
invention comprises: a vibrating member (for example, the vibrating members 26A to 26C in FIG.
2) that outputs voice by vibration; The first vibrator (for example, the vibrator 27A, the vibrator
27C, or the vibrator 27E in FIG. 2) that vibrates the vibration material based on the audio signal
of 1 and a predetermined distance from the first vibrator And the second vibrator (for example,
the vibrator 27B, the vibrator 27D, or the vibrator 27F in FIG. 2) for vibrating the vibration
material based on the second audio signal. Predetermined signal processing is performed on each
of the first audio signal and the second audio signal (for example, the process of step S12 in FIG.
14).
[0034]
A chamber (for example, the chamber 81 in FIG. 5) according to one aspect (the second side) of
the present invention is a vibrating member (for example, the vibrating member 26-1 in FIG. 5)
that outputs sound by vibrating The first vibrator (for example, the vibrator 27-1 in FIG. 5) that
vibrates the vibration material based on the first audio signal, and a predetermined distance from
the first vibrator A wall (for example, the screen speaker apparatus of FIG. 5) including a second
vibrator (for example, the vibrator 27-2 of FIG. 5) mounted on the diaphragm and vibrating the
vibrating material based on the second audio signal 21-1 to 21-12).
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[0035]
It is possible to further include processing means (for example, the signal processing unit 42 in
FIG. 5) for performing predetermined signal processing on each of the first audio signal and the
second audio signal.
[0036]
The apparatus further comprises detection means (e.g., the sensor 44 of FIG. 5) for detecting the
position of the user, and the processing means is configured to determine each of the first audio
signal and the second audio signal based on the detected position. Signal processing can be
performed.
[0037]
It is possible to make the four sides be surrounded by a wall.
[0038]
Hereinafter, embodiments of the present invention will be described with reference to the
drawings.
[0039]
FIG. 2 is a view showing the appearance of the screen speaker device 21. As shown in FIG.
[0040]
The screen speaker device 21 is an example of the audio output device of the present invention,
which plays a role as a screen as well as the function of the speaker.
[0041]
The screen speaker device 21 is configured to include the vibrating members 26A to 26C and the
vibrators 27A to 27F.
[0042]
Each of the vibration members 26A to 26C is formed in a plate shape from a material such as
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gypsum board, wood such as MDF (medium density fiberboard), an aluminum plate, resin such as
carbon or acrylic, or glass.
Each of the vibration members 26A to 26C may be formed of a composite material in which
different materials are combined (laminated).
[0043]
In addition, a plurality of vibrators (two vibrators in FIG. 2) are attached to the vibrating
members of the vibrating members 26A to 26C, for example, in a horizontal row in the figure,
and the vibrator 27A is attached to the vibrating member 26A. The vibrator 27C and the vibrator
27D are attached to the vibrator 27B and the vibrating member 26B, and the vibrator 27E and
the vibrator 27F are attached to the vibrating member 26C in a row in the drawing, respectively.
[0044]
Each of the vibrators 27A to 27F vibrates each of the vibrators 26A to 26C in accordance with an
audio signal supplied from a signal processing unit described later, whereby each of the vibrators
26A to 26C outputs a sound. Do.
That is, the screen speaker device 21 plays a role as a speaker for converting an audio signal into
an audio.
[0045]
Further, each of the transducers 27A to 27F is detachably disposed at a predetermined position
in accordance with the vibration characteristic of each of the vibrating members 26A to 26C.
[0046]
In the example of FIG. 2, the screen speaker device 21 fixes three vibrating members of the
vibrating members 26A to 26C, but in the present invention, the number of the vibrating
members is not limited to three, but one or one. A plurality of sheets can be detachably fixed.
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Further, in the screen speaker device 21, since the vibration material can be freely removed, the
user can also change the thickness (depth) of the vibration material to a desired thickness.
[0047]
In the following description, the vibrators 26A to 26C are simply referred to as the vibrators 26
when it is not necessary to distinguish them individually, and the vibrators 27 are simply
referred to as the vibrators 27A to 27F when it is not necessary to individually distinguish them.
It is called.
[0048]
FIG. 3 is a block diagram showing the configuration of an embodiment of the screen speaker
device 21 to which the present invention is applied.
[0049]
The same parts as those shown in FIG. 2 are denoted by the same reference numerals, and the
description thereof will be omitted (as appropriate).
[0050]
For example, a microphone to be described later is connected to each of the voice input terminals
41-1 to 41-N, and each of the voice input terminals 41-1 to 41-N is a voice signal of voice
collected by the microphone Thus, an audio signal input from the microphone is supplied to the
signal processing unit 42.
[0051]
The signal processing unit 42 includes, for example, a DSP (Digital Signal Processor) or an MPU
(Micro Processing Unit).
The signal processing unit 42 performs predetermined processing on the audio signal input from
each of the audio input terminals 41-1 to 41-N under the control of the control unit 43, and
outputs the audio signal obtained by the processing. It supplies to each of vibrators 27-1 to 27M.
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[0052]
The control unit 43 controls the signal processing unit 42 by supplying a control signal to the
signal processing unit 42.
[0053]
Further, the control unit 43 generates a control signal in accordance with a signal supplied from
the sensor 44 that detects the viewing position of the user, and supplies the generated control
signal to the signal processing unit 42.
[0054]
The sensor 44 includes, for example, a mat sensor provided on the floor, a microphone array, or
a video camera, and detects the position viewed by the user based on the audio signal or the
video signal.
[0055]
Each of the transducers 27-1 to 27-M vibrates the vibrating member 26 to which it is attached,
based on the audio signal supplied from the signal processing unit 42.
As a result, the vibrating member 26 outputs a sound.
[0056]
The signal processing unit 42 includes a signal selection unit 51, a main processing unit 52,
delay processing units 53-1 to 53-M, filter processing units 54-1 to 54-M, and gain adjustment
units 55-1 to 55-M. It is configured to include.
[0057]
The signal selection unit 51 receives the transducers 27-1 to 27-M as a supply destination of the
audio signal input from each of the audio input terminals 41-1 to 41-N based on the control
signal from the control unit 43. And the main processing unit 52 is controlled so that the audio
signal is supplied to the selected vibrator.
[0058]
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Further, the signal selection unit 51 supplies the main processing unit 52 with the audio signal
input from each of the audio input terminals 41-1 to 41-N.
[0059]
The main processing unit 52 subjects the audio signal supplied from the signal selection unit 51
to predetermined processing.
The main processing unit 52 performs any one of the delay processing units 53-1 to 53-M that
performs signal processing on the vibrator serving as the supply destination of the audio signal
subjected to the predetermined processing under the control of the signal selection unit 51.
Supply to crab.
[0060]
Here, although the predetermined process is performed by the main processing unit 52, the main
processing unit 52 performs, for example, a process of removing noise of an audio signal.
Further, the main processing unit 52 supplies the audio signal input from each of the audio input
terminals 41-1 to 41-N as it is without performing predetermined processing based on the
control of the signal selecting unit 51. The signal may be supplied to one of the delay processing
units 53-1 to 53-M that performs signal processing on the preceding vibrator.
[0061]
The delay processing unit 53-1 performs predetermined processing on the audio signal supplied
from the main processing unit 52 based on the control signal supplied from the control unit 43,
and filters the processed audio signal. The data is supplied to the processing unit 54-1.
[0062]
Here, the predetermined processing performed by the delay processing unit 53-1 is, for example,
the delay processing unit 53-1, which is supplied from the control unit 43, a control signal
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indicating the delay amount according to the viewing position of the user. Based on this,
processing (delay processing) to delay the audio signal supplied from the main processing unit
52 by a predetermined delay amount is performed.
The delay processing unit 53-1 supplies the audio signal subjected to the delay processing to the
filter processing unit 54-1.
[0063]
Similar to the delay processing unit 53-1, the delay processing unit 53-2 delays the audio signal
supplied from the main processing unit 52 based on the control signal supplied from the control
unit 43. The processing is performed, and the audio signal subjected to the delay processing is
supplied to the filter processing unit 54-2.
[0064]
Similar to the delay processing unit 53-1, each of the delay processing units 53-3 to 53-M
applies an audio signal supplied from the main processing unit 52 based on the control signal
supplied from the control unit 43. The audio signal is delayed, and the delayed audio signal is
supplied to each of the filter processing units 54-3 to 54-M.
[0065]
The details of the delay processing performed by each of the delay processing units 53-1 to 53M will be described later.
[0066]
The filter processing unit 54-1 performs predetermined processing on the audio signal supplied
from the delay processing unit 53-1 based on the control signal supplied from the control unit
43, and the processed audio signal Are supplied to the gain adjustment unit 55-1.
[0067]
Here, the predetermined process performed by the filter processing unit 54-1 is, for example, the
filter processing unit 54-1 is supplied from the delay processing unit 54-1 based on the control
signal supplied from the control unit 43. The voice signal is filtered by a filter such as a finite
impulse response (FIR) filter or an infinite impulse response (IIR) filter to pass or block the voice
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signal in a predetermined frequency band.
The filter processing unit 54-1 supplies the audio signal subjected to the filtering process to the
gain adjustment unit 55-1.
[0068]
Similar to the filter processing unit 54-1, the filter processing unit 54-2 has a predetermined
frequency with respect to the audio signal supplied from the delay processing unit 53-2 based on
the control signal supplied from the control unit 43. A filtering process for passing or blocking
an audio signal in a band is performed, and the audio signal subjected to the filtering process is
supplied to the gain adjusting unit 55-2.
[0069]
Each of the filter processing units 54-3 to 54 -M, like the filter processing unit 54-1, receives
each of the delay processing units 53-3 to 53 -M based on the control signal supplied from the
control unit 43. The supplied audio signal is subjected to a filtering process for passing or
blocking an audio signal in a predetermined frequency band, and the audio signal subjected to
the filtering process is processed by the gain adjusting units 55-3 to 55-M. Supply to each.
[0070]
The details of the filtering process performed by each of the filtering units 54-1 to 54-M will be
described later.
[0071]
The gain adjustment unit 55-1 performs predetermined processing on the audio signal supplied
from the filter processing unit 54-1 based on the control signal supplied from the control unit
43, and the processed audio signal Is supplied to the vibrator 27-1.
[0072]
Here, the predetermined process performed by the gain adjustment unit 55-1 is, for example, the
gain adjustment unit 55-1 is supplied from the filter processing unit 54-1 based on the control
signal supplied from the control unit 43. A gain adjustment process is performed on the audio
signal to adjust the gain based on the input audio signal and to limit the range of the level of the
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output audio signal.
The gain adjustment unit 55-1 supplies the audio signal subjected to the gain adjustment
processing to the transducer 27-1.
[0073]
Similar to the gain adjustment unit 55-1, the gain adjustment unit 55-2 outputs an audio signal
to the audio signal supplied from the filter processing unit 54-2 based on the control signal
supplied from the control unit 43. A gain adjustment process for limiting the range of signal
levels is performed, and the audio signal subjected to the gain adjustment process is supplied to
the transducer 27-2.
[0074]
Similar to the gain adjustment unit 55-1, each of the gain adjustment units 55-3 to 55-M receives
a signal from each of the filter processing units 54-3 to 54-M based on the control signal
supplied from the control unit 43. A gain adjustment process for limiting the range of the output
audio signal level is performed on the supplied audio signal, and the audio signal subjected to the
gain adjustment process is supplied to each of the transducers 27-3 to 27-M.
[0075]
The details of the gain adjustment processing performed by each of the gain adjustment units
55-3 to 55-M will be described later.
[0076]
As described above, in the screen speaker device 21, the audio signal supplied to the vibrator 27
is weighted by performing the predetermined signal processing by the signal processing unit 42,
and a desired audio is output to the diaphragm 26. it can.
[0077]
In the following description, when the delay processing units 53-1 to 53-M do not need to be
distinguished individually, they are simply referred to as the delay processing unit 53, and the
filter processing units 54-1 to 54-M are individually distinguished. If it is not necessary to do so,
it is simply referred to as the filter processing unit 54, and if it is not necessary to distinguish the
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gain adjustment units 55-1 to 55-M, it is simply referred to as the gain adjustment unit 55.
Further, when it is not necessary to distinguish the voice input terminals 41-1 to 41-N, they are
simply referred to as the voice input terminal 41.
[0078]
Furthermore, in the above-described example, each of the delay processing unit 53, the filter
processing unit 54, and the gain adjustment unit 55 performs predetermined processing on the
audio signal supplied to each of the transducers 27-1 to 27-M. Although it has been described
that processing is performed, in the present invention, it is not necessary to perform all
processing. For example, only delay processing by the delay processing unit 53 may be
performed on an audio signal.
[0079]
Furthermore, in the above-described example, in order to make the description easy to
understand, the delay processing unit 53 is divided into the delay processing units 53-1 to 53-M,
and the filter processing unit 54 is the filter processing unit 54-1. Although the gain adjustment
unit 55 has been described separately to the gain adjustment units 55-1 to 55-M in the present
invention, each processing unit (for example, a delay processing unit 53, the filter processing unit
54, or the gain adjustment unit 55) may perform processing collectively.
[0080]
By the way, for example, a plurality of microphones are connected to the audio input terminal 41
for inputting an audio signal to the signal processing unit 42, and the signal processing unit 42
determines a predetermined audio signal of the audio collected by those microphones. Signal
processing will be performed.
[0081]
FIG. 4 is a view for explaining an example of attachment of a microphone when the microphone
is connected to the audio input terminal 41. As shown in FIG.
[0082]
As shown in the example of FIG. 4, the microphones 71-1 to 71-6 are connected to the voice
input terminals 41-1 to 41-6 via the cables 72-1 to 72-6, respectively. Each of the microphones
71-1 to 71-6 is fixed by the microphone stand 73.
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[0083]
Each of the microphones 71-1 to 71-6 collects voice and converts the collected voice into a voice
signal.
Each of the microphones 71-1 to 71-6 outputs the converted audio signal to each of the audio
input terminals 41-1 to 41-6 through each of the cables 72-1 to 72-6.
[0084]
As described above, the microphones 71-1 to 71-6 are collected in six directions by being
directed in six directions, and the audio signals of the collected audio are the cables 72-1 to 72-6
and the audio input terminal 41. It will be input to the signal processing unit 42 via each of -1 to
41-6.
[0085]
In the example shown in FIG. 4, six microphones are collected in six directions, but the present
invention is not limited to six, and a plurality of microphones may be used to collect sound from
any direction. Good.
Although the microphones are arranged, they do not have to be arranged concentrically as
shown in the example of FIG. 4 and may be arranged at arbitrary positions.
[0086]
Furthermore, in the example of FIG. 4, the microphones 71-1 to 71-6 are connected to the audio
input terminals 41-1 to 41-6 via the cables 72-1 to 72-6, respectively. Although it becomes
possible to process in real time the sound collected by the microphone, the present invention is
not limited thereto, and for example, a recording device or the like recording the sound recorded
from the microphone is connected to the sound input terminal 41 You may do so.
[0087]
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In the following description, when the microphones 71-1 to 71-6 do not need to be individually
distinguished, they are simply referred to as the microphone 71 and the cables 72-1 to 72-6 do
not need to be individually distinguished. , Simply referred to as the cable 72.
[0088]
By the way, the screen speaker apparatus 21 of the present invention can be configured to be a
wall of a room.
That is, by providing the screen speaker device 21 as a wall of a room, the wall plays a role of
partitioning the room and can also output sound.
[0089]
FIG. 5 is a diagram showing the configuration of an embodiment of the room 81 to which the
present invention is applied.
[0090]
The same parts as in the case shown in FIG. 3 are assigned the same reference numerals, and the
description thereof will be omitted (as appropriate).
[0091]
The room 81 is an example of a room according to the present invention, which is configured by
the plurality of screen speaker devices 21 being walls of the room.
[0092]
That is, in the room 81 in which the screen speaker device 21 is provided as a wall, the wall plays
a role of partitioning the room and can output sound.
Since the example of FIG. 5 is a view from the upper side, a space surrounded by each of the
screen speaker devices 21-1 to 21-12 is a room 81.
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[0093]
FIG. 5 is a view of the room 81 viewed from the upper side, so in each of the screen speaker
devices 21-1 to 21-12, a black square represents a diaphragm and is attached to the diaphragm.
There are two white squares that represent the oscillator.
[0094]
Also, since the room 81 is configured to be surrounded by the screen speaker devices 21 in four
directions, it is expressed that 12 screen speaker devices 21 are connected in the lateral
direction, but in actuality, As shown in Example 2, the vibrators are connected in the longitudinal
direction, and the numbers of vibrators and vibrators are arbitrary.
[0095]
The room 81 includes four screen speakers 21-1 to 21-3, screen speakers 21-4 to 21-6, screen
speakers 21-7 to 21-9, and screen speakers 21-10 to 21-12. It is composed of faces.
That is, the four faces surrounding the four sides of the room 81 are each constituted by three
screen speaker devices 21.
[0096]
Each of the screen speaker devices 21-1 to 21-12, like the screen speaker device 21, plays a role
as a screen (wall) simultaneously with the function of the speaker.
That is, each of the screen speaker devices 21-1 to 21-12 can output various sounds by
increasing the vibrating material in the longitudinal direction or adjusting the thickness of the
vibrating material.
[0097]
Although the room 81 is described as being surrounded by four faces in the example of FIG. 5,
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the present invention is not limited to the four faces, and at least one face may be provided.
Also, although one face is described as being configured by three screen speaker devices, in the
present invention, the present invention is not limited to three screen speaker devices, as long as
at least one screen speaker device is provided. Good.
[0098]
For example, a microphone 71 is connected to each of the audio input terminals 41-1 to 41-N,
and each of the audio input terminals 41-1 to 41-N is an audio signal of an audio collected by the
microphone 71. The audio signal input from the microphone 71 is supplied to the signal
processing unit 42.
[0099]
The signal processing unit 42 performs, for example, the above-described delay processing, filter
processing, or gain adjustment on the audio signal input from each of the audio input terminals
41-1 to 41-N under the control of the control unit 43. A predetermined process such as a process
is performed, and an audio signal obtained by the process is supplied to each of the transducers
27-1 to 27-24 attached to each of the screen speaker devices 21-1 to 21-12.
[0100]
Each of the transducers 27-1 to 27-24 is disposed at a predetermined position according to the
vibration characteristic of each of the vibration members 26-1 to 26-12, and the sound signal
supplied from the signal processing unit 42 is Each of the vibrating members 26-1 to 26-12 is
vibrated on the basis of the vibration.
[0101]
Each of the vibrating members 26-1 to 26-12 is vibrated by the vibrators 27-1 to 27-24 to
output a sound.
That is, as shown in the example of FIG. 5, when each of the vibration members 26-1 to 26-12 is
configured to surround the four sides of the room 81, the entire room 81 serves as a sound field.
10-05-2019
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[0102]
Further, the control unit 43 controls the signal processing performed by the signal processing
unit 42 based on the position of the user in the room 81 detected by the sensor 44, whereby the
sound at the position where the user is present is optimal. Control the sound field to be
[0103]
As described above, since the room 81 is configured by connecting the screen speaker devices
21-1 to 21-12, the sound field of the entire room can be controlled.
Also, the room 81 can output a voice that is optimal for the user's location by detecting the user's
location with the sensor 44.
[0104]
For example, when the user operates the touch panel remote control or joystick to rotate the
sound field of the room 81, the vibrator number, the input signal number, the delay amount, the
filter according to the position of the room 81. By holding numbers or gain values in advance as
sound field maps, the room 81 can rotate the sound to the position where the user is watching
based on the sound field maps.
[0105]
As a method of rotating the sound field of the room 81, for example, the signal selection unit 51
of the signal processing unit 42 controls the sound input terminal 41-based on the control signal
including the information of the sound field map supplied from the control unit 43. One of the
transducers 27-1 to 27-24 is selected as a supply destination of the audio signal input from each
of 1 to 41-N, and control is performed so that the audio signal is supplied to the selected
transducer Do.
As a result, the room 81 can be rotated at the rotation angle of the number of audio signals input
from each of the audio input terminals 41-1 to 41-N.
[0106]
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In addition, each of the delay processing unit 53, the filter processing unit 54, and the gain
adjustment unit 55 performs a predetermined process based on a control signal including
information on a sound field map supplied from the control unit 43. In fact, since the rotation
angle is smaller, smoother rotation is possible.
[0107]
In the following description, when it is not necessary to distinguish the transducers 27-1 to 2724 individually, it is simply referred to as the transducer 27 and it is necessary to distinguish the
vibrating members 26-1 to 26-12 individually. If there is not, it is simply referred to as the
vibrating member 26.
[0108]
FIG. 6 is a view for explaining the vibrator 27 attached to the vibration member 26. As shown in
FIG.
[0109]
The same parts as those shown in FIGS. 2 to 5 are denoted by the same reference numerals, and
the description thereof will be omitted (as appropriate).
Further, in the example of FIG. 6, in order to make the description easy to understand, the case
where sound is collected by two microphones will be described.
Furthermore, although the voice signal of the voice collected by two microphones is expressed as
being input to each of the signal processing unit 42-1 and the signal processing unit 42-2, the
signal processing unit 42-1 and the signal are represented. Each of the processing units 42-2
performs the same processing as that of the signal processing unit 42 described above.
[0110]
The signal processing unit 42-1 performs predetermined processing on the audio signal input
from the microphone 71-1, and outputs the processed audio signal to the transducers 27-2 and
27-3. Supply to each.
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[0111]
Similar to the signal processing unit 42-1, the signal processing unit 42-2 performs
predetermined processing on the audio signal input from the microphone 71-2, and converts the
processed audio signal into a transducer. 27-4 and the vibrator 27-5.
[0112]
The vibrators 27-2 to 27-5 are disposed at predetermined positions of the vibrating members
26-1 to 26-3, and are supplied from any of the signal processing unit 42-1 and the signal
processing unit 42-2. Sound is output by vibrating any one of the vibration members 26-1 to 263 based on the sound signal.
[0113]
That is, as shown in the example of FIG. 6, two vibrators, the vibrator 27-3 and the vibrator 27-4,
are attached to the vibrating member 26-2, and the vibrator 27-3 and the vibrator 27 are
mounted. Each of -4 causes the vibrating member 26-2 to vibrate to output the sound collected
by each of the microphone 71-1 and the microphone 71-2.
[0114]
FIG. 7 is a view of the vibrating member 26-2 of FIG. 6 as viewed from the front.
[0115]
The vibrator 27-3 is, for example, a vibration wave a indicated by a dotted line of a triple circle
centered on the vibrator 27-3 in FIG. 7 based on the audio signal A supplied from the signal
processing unit 42-1. By vibrating the vibrating member 26-2, sound is output to the vibrating
member 26-2.
[0116]
Further, the vibrator 27-4 is, for example, a vibration wave b indicated by a dotted line of a triple
circle centered on the vibrator 27-4 of FIG. 7 based on the audio signal B supplied from the
signal processing unit 42-2. As in the above, sound is output to the vibration member 26-2 by
vibrating the vibration member 26-2.
[0117]
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A combined wave c indicated by an arc dotted line in FIG. 7 is a wave generated by combining
the oscillating wave a and the oscillating wave b on the oscillating member 26-2.
That is, although the vibrator for vibrating the vibration member 26-2 is not provided at the
position where the synthetic wave c is generated, in the synthetic wave c, the vibrator 27-3 and
the vibrator 27-4 vibrate. It will be produced from the vibration wave generated by vibrating the
material 26-2.
[0118]
In other words, the combined wave c has a vibrator at a position between the vibrator 27-3 and
the vibrator 27-4, and the virtual vibrator vibrates the vibrating member 26-2. The sound wave
(voice) (hereinafter, also referred to as an intermediate sound) output to the vibration member
26-2 is obtained.
[0119]
As described above, in the present invention, voices collected by a plurality of microphones are
not mixed in the air, but are synthesized at an arbitrary position on the diaphragm, thereby
combining with the voice at the position where the microphones are provided. Also, it is possible
to output an intermediate sound assumed to exist between the microphones.
As a result, it is possible to create a realistic sound field as if the sound sources were not
discretely arranged and were present.
[0120]
In the example described above, it has been described that two vibrators 27-3 and 27-4 are
attached to one vibrating member 26-2, but at least two vibrators 27 are The plurality of
vibrators 27 may be disposed at predetermined positions according to the characteristics of the
vibrating member 26 as long as they are attached.
[0121]
Moreover, although it is a position which generates synthetic wave c, synthetic wave c can be
10-05-2019
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generated in the desired position of diaphragm 26 because signal processing part 42 performs
predetermined processing.
That is, the signal processing unit 42 supplies the sound signal subjected to the predetermined
processing to the vibrator 27 to physically output the sound to the vibration member 26 to
generate the synthetic wave c at a desired position. By this, it becomes possible to output an
intermediate sound from a desired position.
[0122]
As shown in the example of FIG. 8, a position 91 on the vibrating member 26-2 which is
separated to the right in the figure from the vibrator 27-3 by a distance L1 and to the left in the
drawing from the vibrator 27-4 by a distance L2. When it is desired to generate the synthetic
wave c from the above, each of the delay processing unit 53, the filter processing unit 54, and
the gain adjustment unit 55 of the signal processing unit 42 generates a predetermined sound
signal of the sound collected by the microphone 71. Perform signal processing.
[0123]
The delay processing unit 53 performs delay processing on the audio signal of the sound
collected by the microphone 71 based on the control signal indicating the delay amount supplied
from the control unit 43.
[0124]
Here, the control signal indicating the delay amount supplied from the control unit 43 is, for
example, the delay amount to the vibrator 27-3 as the delay amount D1, and the delay amount to
the vibrator 27-4 as the delay amount D2. In the case, each of the delay amount D1 and the delay
amount D2 is calculated from each of Expression (1) and Expression (2).
[0125]
D1 = (L2-L1) / 2 × v + α (1)
[0126]
D2 = (L1-L2) / 2 × v + α (2)
[0127]
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25
Here, v represents the propagation speed of the vibrating member 26, and α represents a value
(adjustment amount) for adjusting the delay amount when a plurality of vibrating members 26
are provided.
In addition, since the propagation velocity v varies depending on the material of the vibration
member 26, it is necessary to change the value for each material.
The adjustment amount α is a value for adjusting the delay amount between the vibrating
members 26 in accordance with the position of the user, for example, when the plurality of
vibrating members 26 are provided.
[0128]
That is, the control signal supplied from control unit 43 includes information indicating delay
amount D1 and delay amount D2, and delay processing unit 53 uses the delay amount D1 and
delay amount D2 as a microphone. A delay process is performed on the audio signal collected by
71.
[0129]
The filter processing unit 54 applies an audio signal of a predetermined frequency band to the
audio signal of the audio collected by the microphone 71 based on the control signal supplied
from the control unit 43 using a filter such as an FIR filter or an IIR filter. Perform filtering to
pass or block the signal.
[0130]
As shown in the example of FIG. 9, when the vibrating members 26 are arranged in two lines in
the vertical direction (vertically 2 × horizontally 2 in FIG. 9), the filtering unit 54 is a vibrating
member 26-1 provided at a high position. A high frequency sound (high sound) is output from
each of the vibration members 26-3 and the vibration members 26-3, and a low frequency is
generated from each of the vibration members 26-2 and 26-4 provided at a low position. Sound
(low sound) is output.
[0131]
In the example of FIG. 9, in order to make the description easy to understand, the four vibrating
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26
members arranged in vertical 2 × horizontal 2 are referred to as vibrating members 26-1 to 264 and their four vibrations are The four vibrators attached to the material will be described as
vibrators 27-1 to 27-4.
[0132]
FIG. 10 is a diagram for explaining the details of the filter processing unit 54. As shown in FIG.
[0133]
In addition, the same code | symbol is attached | subjected to the part similar to the case shown
in FIG. 3, The description is abbreviate | omitted (as appropriate).
[0134]
The filter processing unit 54 generates, for example, a high pass filter (HPF (High Pass Filter)), a
low pass filter (LPF (Low Pass Filter)), or the like from the filter coefficient bank 101 based on
the control signal supplied from the control unit 43. A filter coefficient such as a band pass filter
(BPF (Band Pass Filter)) is acquired.
The filter processing unit 54 performs a filtering process on the audio signal of the sound
collected by the microphone 71 according to the filter coefficient acquired from the filter
coefficient bank 101.
[0135]
That is, based on the control signal supplied from the control unit 43, the filter processing unit
54-1 performs high-pass as a coefficient acquired from the filter coefficient bank 101 on the
audio signal C of the sound collected by the microphone 71. By using the filter, only the audio
signal C having a frequency higher than the cutoff frequency is passed, and the audio signal C
having a frequency lower than the cutoff frequency is attenuated, whereby the audio signal CHPF
subjected to the filter processing is ) To the vibrator 27-1.
Then, the vibrator 27-1 vibrates the vibrating member 26-1 based on the audio signal CHPF
supplied from the filter processing unit 54-1, thereby outputting high-frequency audio.
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27
[0136]
Further, the filter processing unit 54-2 performs low-pass which is a coefficient acquired from
the filter coefficient bank 101 with respect to the audio signal C of the sound collected by the
microphone 71 based on the control signal supplied from the control unit 43. Only the audio
signal C having a frequency equal to or lower than the cutoff frequency is passed by the filter,
and the audio signal C having a frequency higher than the cutoff frequency is attenuated, thereby
the audio signal CLPF subjected to the filter processing ( ) To the vibrator 27-2.
The vibrator 27-2 vibrates the vibrating member 26-2 based on the audio signal CLPF supplied
from the filter processing unit 54-2 to output low frequency audio.
[0137]
Furthermore, similarly to the filter processing unit 54-1, the filter processing unit 54-3 performs
processing on the sound signal D of the sound collected by the microphone 71 based on the
control signal supplied from the control unit 43. A filter process is performed by a high pass
filter which is a coefficient acquired from the filter coefficient bank 101, and the audio signal
DHPF subjected to the filter process is supplied to the transducer 27-3 (via the gain adjustment
unit 55-3).
Then, the vibrator 27-3 vibrates the vibrating member 26-3 based on the audio signal DHPF
supplied from the filter processing unit 54-3 to output high frequency audio.
[0138]
Further, the filter processing unit 54-4, like the filter processing unit 54-2, filters the sound
signal D of the sound collected by the microphone 71 based on the control signal supplied from
the control unit 43. Filter processing is performed by a low pass filter which is a coefficient
acquired from the coefficient bank 101, and the audio signal DLPF subjected to the filter
processing is supplied to the transducer 27-4 (via the gain adjustment unit 55-4).
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The vibrator 27-4 vibrates the vibrating member 26-4 based on the audio signal DLPF supplied
from the filter processing unit 54-4 to output low frequency sound.
[0139]
That is, when a plurality of vibrating members 26 are used, the characteristics of the vibrating
members 26 differ depending on the thickness and the material of the respective vibrating
members 26 and the position to which the vibrator 27 is attached. The audio signal is subjected
to a predetermined filtering process so as to take charge of the band which is optimum at 26 (for
example, the band where the loudest volume is generated or the band where the frequency
characteristic is most flat). 26 limits the band of frequencies input.
[0140]
FIG. 11 is a diagram for explaining the details of the gain adjustment unit 55. As shown in FIG.
[0141]
In addition, the same code | symbol is attached | subjected to the part similar to the case shown
in FIG. 3, The description is abbreviate | omitted (as appropriate).
[0142]
The gain adjustment unit 55 acquires a gain coefficient from the gain coefficient bank 111 based
on the control signal supplied from the control unit 43.
The gain adjustment unit 55 performs a gain adjustment process on the audio signal of the
sound collected by the microphone 71 according to the gain coefficient acquired from the gain
coefficient bank 111.
[0143]
Here, the gain coefficient includes, for example, a coefficient that changes linearly, a coefficient
that changes in a logarithmic manner, or a coefficient that changes non-linearly according to the
auditory characteristics of the user. The range of the level of the audio signal to be output is
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29
limited by adjusting the gain of the input audio signal, and the audio signal subjected to the gain
adjustment processing is supplied to the vibrator 27.
Then, the vibrator 27 vibrates the vibrating member 26 based on the audio signal whose gain
has been adjusted, which is supplied from the gain adjustment unit 55, to output an audio.
[0144]
That is, since the damping factor of the vibration in the vibrating member differs depending on
the material of the vibrating member 26, as shown in the example of FIG. When creating an
intermediate sound between A and audio signal B, the gain is adjusted according to the
attenuation factor of the material.
[0145]
By the way, since a plurality of vibrators 27 can be attached to a desired position on the vibrating
member 26, each of the vibrators 27-1 to 27-4 is mounted on the vibrating member 26 as shown
in the example of FIG. When the signal processing unit 42 is attached, the signal processing unit
42 performs the above-described delay processing, filter processing, gain adjustment processing,
and the like to form a surface 121 indicated by oblique lines in the figure centering on an
arbitrary position on the vibrating member 26. Control can be performed to output an
intermediate sound of a plurality of audio signals.
[0146]
That is, for example, the signal processing unit 42 performs predetermined processing such as
delay processing, filter processing, or gain adjustment processing on each of the audio signals E
to H input from each of the microphones 71-1 to 71-4. And each of the processed audio signals E
to H is supplied to each of the transducers 27-1 to 27-4.
[0147]
Each of the vibrators 27-1 to 27-4 causes the vibrating member 26 to vibrate in accordance with
each of the audio signals E to H supplied from the signal processing unit 42, thereby outputting
an intermediate sound from the surface 121.
[0148]
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30
At this time, it is desirable that each of the transducers 27-1 to 27-4 be attached to the end of the
vibrating member 26.
For example, as shown in the example of FIG. 13, each of the vibrator 27-1 and the vibrator 27-2
has the vibrator 27-1 attached to the left end in the figure of the vibrating member 26, and the
vibrator 27-2 is a vibrator By attaching it to the right end in the figure of 26, the range of the
surface 121 of FIG. 12 can be expanded.
[0149]
Also in each of the vibrator 27-3 and the vibrator 27-4, the range of the surface 121 around an
arbitrary position on the vibrating member 26 can be expanded by attaching to the end of the
vibrating member 26. .
[0150]
As described above, the above-described sound field is controlled by outputting intermediate
sounds of a plurality of signal sources (for example, audio signals E to H) from the surface 121
centered on an arbitrary position on the vibration member 26. It is possible to smooth the
rotation of the
[0151]
Next, with reference to the flowchart of FIG. 14, the process of audio output performed by the
screen speaker device 21 will be described.
[0152]
In step S11, the microphone 71 collects voice and converts the collected voice into a voice signal.
The microphone 71 supplies the audio signal to the signal processing unit 42 by outputting the
converted audio signal to the audio input terminal 41 via the cable 72.
[0153]
For example, in step S11, the six microphones 71-1 to 71-6 (FIG. 4) arranged concentrically each
10-05-2019
31
collect a sound, convert the collected sound into a sound signal, and convert the sound signal.
The audio signal is supplied to the signal processing unit 42 through the cable 72 and the audio
input terminal 41.
[0154]
In step S12, under the control of the control unit 43, the signal processing unit 42 performs
predetermined processing on the audio signal of the audio collected by the microphone 71 and is
input from the audio input terminal 41. The sound signal obtained by the processing is supplied
to the vibrator 26.
[0155]
For example, in step S12, under the control of the control unit 43, the signal processing unit 42
performs delay processing, filter processing, or gain processing on the audio signal supplied from
each of the microphones 71-1 to 71-6. Among the audio signals subjected to processing such as
adjustment processing and the like and signal processing, the audio signal of the audio collected
by the microphone 71-1 is supplied to the transducer 27-1.
Similarly, the signal processing unit 42 is an audio signal collected by each of the microphones
71-2 to 71-6 under the control of the control unit 43 and is an audio signal subjected to the
signal processing. , And the vibrators 27-2 to 27-6.
[0156]
That is, as shown in the example of FIG. 5, the screen speaker device 21-1 includes the
diaphragm 26-1, the vibrator 27-1 and the vibrator 27-2, and the screen speaker device 21-2
includes The screen speaker device 21-3 comprises the diaphragm 26-2, the vibrator 27-3 and
the vibrator 27-4, and the diaphragm 26-3, the vibrator 27-5 and the vibrator 27-6. The signal
processing unit 42 is an audio signal collected by each of the microphones 71-1 to 71-6, and the
audio signal subjected to the signal processing is transmitted to the diaphragms 26-1 to 26. It
supplies to each of the vibrator | oscillator 27-1 thru | or the vibrator | oscillator 27-6 with
which each of -3 was mounted | worn.
Details of signal processing will be described later.
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32
[0157]
In step S13, the vibrator 27 vibrates the vibrating member 26 based on the audio signal supplied
from the signal processing unit 42.
[0158]
For example, in step S13, the vibrator 27-1 is an audio signal of the sound collected by the
microphone 71-1 and vibrates the vibrating member 26-1 based on the audio signal supplied
from the signal processing unit 42. Let
Similarly, each of the transducers 27-2 to 27-6 is an audio signal of the sound collected by each
of the microphones 72-2 to 71-6, and the audio signal supplied from the signal processing unit
42 And vibrates each of the vibration members 26-1 to 26-3 to which each is attached.
[0159]
In step S14, the vibrating member 26 is vibrated by the vibrator 27, thereby outputting a sound,
and the process ends.
[0160]
For example, in step S14, the vibrating member 26-1 is vibrated by the vibrator 27-1 and the
vibrator 27-2, so that the sound collected by each of the microphone 71-1 and the microphone
71-2 is generated. Output.
[0161]
At this time, the vibrating member 26-1 vibrates by the sound signal collected by the microphone
71-1 of the vibrator 27-1, and vibrates by the sound signal collected by the microphone 71-2 of
the vibrator 27-2. Therefore, as described above, the intermediate sound is generated by
synthesizing those vibrations on the diaphragm 26-1.
That is, although this intermediate sound is not directly collected by the microphone, it is a sound
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33
assumed to be collected between the microphone 71-1 and the microphone 71-2.
[0162]
Also, for example, as in the case of the vibrating member 26-1, the vibrating member 26-2 is
vibrated by the vibrator 27-3 and the vibrator 27-4, respectively. Outputs the sound collected by
each.
[0163]
At this time, like the vibrating member 26-1, the vibrating member 26-2 vibrates due to the
sound signal from the microphone 71-3 of the vibrator 27-3 and the sound from the microphone
71-4 of the vibrator 27-4. By combining the vibration due to the signal on the vibrating member
26-2, an intermediate sound assumed to be collected between the microphone 71-3 and the
microphone 71-4 is generated.
[0164]
Furthermore, for example, in the same manner as the vibrating member 26-1, the vibrating
member 26-3 is vibrated by the vibrator 27-5 and the vibrator 27-6, respectively. Outputs the
sound collected by each.
[0165]
At this time, like the vibrating member 26-1, the vibrating member 26-3 vibrates due to the
sound signal from the microphone 71-5 of the vibrator 27-5 and the sound from the microphone
71-6 of the vibrator 27-6. The signal vibration is synthesized on the vibrating member 26-3 to
generate an intermediate sound assumed to be collected between the microphone 71-5 and the
microphone 71-6.
[0166]
As described above, each of the screen speaker devices 21-1 to 21-3 is not only the sound
collected by each of the microphones 71-1 to 71-6 but also the sound assumed to be collected
between the microphones (Intermediate sound) can also be output.
As a result, according to the present invention, it is possible to create a realistic sound field as if
present in a place where sound sources such as microphones are not discretely arranged.
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[0167]
In the example of FIG. 14, in order to make the description easy to understand, it is assumed that
the audio signals of the sounds collected by the microphones 71-1 to 71-6 are supplied to the
transducers 27-1 to 27-6. However, the present invention is not limited thereto. For example, an
audio signal of audio collected by each of the microphones 71-1 to 71-6 is supplied to each of
the transducers 27-1 to 27-24 in FIG. In this way, it may be made to correspond to the
microphones arranged concentrically.
[0168]
Next, the details of the signal processing in step S12 of FIG. 14 will be described with reference
to the flowchart of FIG.
[0169]
In step S21, the signal selection unit 51 selects the vibrator 27 as a supply destination of the
audio signal input from the audio input terminal 41 based on the control signal from the control
unit 43, and the audio signal is selected. The main processing unit 52 is controlled to be supplied
to the vibrator 27.
[0170]
For example, in step S21, the signal selection unit 51 supplies the audio signal input from each of
the audio input terminals 41-1 to 41-6 based on the control signal from the control unit 43. First,
each of the transducers 27-1 to 27-6 is selected, and the voice signal of the sound collected by
each of the microphones 71-1 to 71-6 is selected as the selected transducer 27-1 to 27-6. The
main processing unit 52 is controlled to be supplied to each of the above.
[0171]
In step S <b> 22, the main processing unit 52 subjects the audio signal supplied from the signal
selection unit 51 to predetermined processing such as processing for removing noise of the
audio signal, for example.
The main processing unit 52 supplies the audio signal subjected to the predetermined processing
to the delay processing unit 53 that performs signal processing on the vibrator serving as the
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35
supply destination based on the control of the signal selection unit 51.
[0172]
For example, in step S22, the main processing unit 52 performs processing to remove noise on
the audio signal of the audio collected from each of the microphones 71-1 to 71-6 supplied from
the signal selection unit 51. The audio signal subjected to the processing is supplied to each of
the delay processing units 53-1 to 53-6.
[0173]
In step S23, the delay processing unit 53 delays the audio signal supplied to the audio signal
supplied from the main processing unit 52 based on the control signal supplied from the control
unit 43, and performs delay processing. The received audio signal is supplied to the filter
processing unit 54.
[0174]
For example, in step S23, each of the delay processing units 53-1 to 53-6 receives the
microphones 71-1 to 71-6 supplied from the main processing unit 52 based on the control signal
supplied from the control unit 43. The delay processing is performed on the voice signal of the
voice collected by each of the above, and the voice signal subjected to the delay processing is
supplied to each of the filter processing units 54-1 to 54-6.
[0175]
In step S24, the filter processing unit 54 passes or blocks an audio signal in a predetermined
frequency band with respect to the audio signal supplied from the delay processing unit 53
based on the control signal supplied from the control unit 43. Filter processing, and supplies the
audio signal subjected to the filter processing to the gain adjustment unit 55.
[0176]
For example, in step S24, each of the filter processing units 54-1 to 54-6 receives the sound
supplied from each of the delay processing units 53-1 to 53-6 based on the control signal
supplied from the control unit 43. The signal is subjected to filter processing, and the audio
signal subjected to the filter processing is supplied to each of the gain adjustment units 55-1 to
55-6.
[0177]
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36
In step S25, the gain adjustment unit 55 performs gain adjustment processing to limit the range
of the audio signal level to be output with respect to the audio signal supplied from the filter
processing unit 54 based on the control signal supplied from the control unit 43. , The voice
signal subjected to the gain adjustment processing is supplied to the vibrator 27, the processing
is returned to the processing of step S12 of FIG. 14, and the processing after step S13 is
executed.
[0178]
For example, in step S25, each of the gain adjusting units 55-1 to 55-6 receives the sound
supplied from each of the filter processing units 54-1 to 54-6 based on the control signal
supplied from the control unit 43. A gain adjustment process is performed on the signal, and the
audio signal subjected to the gain adjustment process is supplied to each of the transducers 27-1
to 27-6.
[0179]
As described above, since the signal processing unit 42 can perform different signal processing
for each audio signal supplied to the vibrator 27, the signal processing unit 42 supplies the
vibrator 27 with a more suitable audio signal to generate an intermediate sound. can do.
[0180]
As described above, according to the present invention, it is possible to appropriately vibrate
each part of the wide range of the vibrating member and emit sound from each part.
As a result, more realistic speech can be output.
[0181]
Further, according to the present invention, voices collected by two or more microphones are not
mixed in the air, but are synthesized on the vibrating member, so that voices are present between
the microphones along with the voice at the collected position. It is also possible to output voices
that are supposed to be
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37
Furthermore, according to the present invention, when the wall of the room is connected by the
screen speaker device, the sensor detects the position where the user is watching, so that the
sound has a sense of reality regardless of the user's viewing position. You can create a place.
[0182]
Further, according to the present invention, so-called sweet spots can be expanded and hollow
spots can be prevented by surrounding the wall of the room with a screen speaker device and
synthesizing the sound on the diaphragm.
[0183]
The series of processes described above can be performed not only by hardware but also by
software.
When a series of processes are to be executed by software, various functions may be executed by
installing a computer in which a program constituting the software is incorporated in dedicated
hardware or various programs. It can be installed from a recording medium, for example, on a
general-purpose personal computer.
[0184]
FIG. 16 is a view showing an example of the internal configuration of a general-purpose personal
computer 201. As shown in FIG.
A central processing unit (CPU) 211 executes various processes in accordance with a program
stored in a read only memory (ROM) 212 or a program loaded from a recording unit 218 to a
random access memory (RAM) 213.
The RAM 213 also stores data necessary for the CPU 211 to execute various processes.
[0185]
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The CPU 211, the ROM 212, and the RAM 213 are mutually connected via a bus 214.
An input / output interface 215 is also connected to the bus 214.
[0186]
The input / output interface 215 includes an input unit 216 including a button, a switch, a
keyboard or a mouse, a display such as a CRT (Cathode Ray Tube) and an LCD (Liquid Crystal
Display), and an output unit 217 including a speaker. , And a communication unit 219 including
a modem, a terminal adapter, and the like.
The communication unit 219 performs communication processing via a network including the
Internet.
[0187]
A drive 220 is also connected to the input / output interface 215 as necessary, and a removable
medium 211 composed of a magnetic disk, an optical disk, a magneto-optical disk, or a
semiconductor memory is appropriately attached, and a computer program read therefrom is ,
And installed in the recording unit 218.
[0188]
A recording medium for recording a program installed in a computer and put into an executable
state by the computer, as shown in FIG. 16, is distributed to provide a program to the user
separately from the main body of the apparatus. Magnetic disks recorded (including flexible
disks), optical disks (including compact disc-read only memory (CD-ROM), digital versatile discs
(DVD)), magneto-optical disc (mini-disc) (registered trademark) Not only the removable media
211, or the semiconductor memory etc.), but also the ROM 212 or the recording unit 218 in
which the program is provided which is provided to the user in a state of being incorporated in
advance in the device body. Hard disk etc.
[0189]
Furthermore, the program for executing the series of processes described above is installed on a
computer via a wired or wireless communication medium such as a local area network, the
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Internet, digital satellite broadcasting, etc. via an interface such as a router or modem as
necessary. It may be done.
[0190]
In the present specification, the step of describing the program stored in the recording medium is
not limited to processing performed chronologically in the order described, but not necessarily
parallel processing or not necessarily processing chronologically. It also includes processing to
be executed individually.
[0191]
Further, the embodiment of the present invention is not limited to the above-described
embodiment, and various modifications can be made without departing from the scope of the
present invention.
[0192]
It is a figure explaining the conventional screen speaker apparatus.
It is a figure which shows the external appearance of a screen speaker apparatus.
FIG. 1 is a block diagram showing a configuration of an embodiment of a screen speaker
apparatus to which the present invention is applied.
It is a figure explaining the example of attachment of a microphone.
It is a figure which shows the structure of one Embodiment of the chamber | room to which this
invention is applied.
It is a figure explaining the vibrator | oscillator attached to a vibrating material.
It is a figure at the time of seeing the vibrator of Drawing 6 from the front.
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It is a figure explaining the detail of delay processing.
It is a figure explaining the detail of filter processing.
It is a figure explaining the detail of a filter processing part.
It is a figure explaining the detail of a gain adjustment part.
It is a figure explaining the field which vibrates.
It is a figure explaining expansion of the range of the field which vibrates.
It is a flowchart explaining the process of an audio | voice output.
It is a flowchart explaining the detail of the signal processing of FIG.
It is a block diagram showing an example of composition of a personal computer.
Explanation of sign
[0193]
21, 21-1 to 21-12 Screen speaker device, 26, 26 A to 26 C, 26-1 to 26-12 Vibratory material, 27,
27 A to 27 F, 27-1 to 27-M Vibrator, 41, 41-1 To 41-N voice input terminals, 42, 42-1, 42-2
signal processing units, 43 control units, 44 sensors, 51 signal selection units, 52 main
processing units, 53, 531 to 53-M delay processing units , 54, 54-1 to 54-M filter processing
unit, 55, 55-1 to 55-M gain adjustment unit, 71, 71-1 to 71-6 microphone, 72, 72-1 to 72-6
cable, 101 Filter coefficient bank, 111 gain coefficient bank
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