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JP2013236354

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DESCRIPTION JP2013236354
Abstract: The present invention provides an acoustic system capable of creating an excellent
sound field while suppressing an increase in the number of speaker devices while reducing the
burden on the listener when adjusting the sound field. A sound system (100) includes a plurality
of speaker devices (11-15), a camera (3) for imaging the surroundings of the speaker devices
(11-15), and the speaker devices (11-15) based on an image taken by the camera. The control
unit 1 detects a distance and an angle to the listener, and a drive unit 4 that changes the
direction of the speaker devices 11 to 15. The control unit 1 is configured to control the drive of
the drive unit 4 so as to change the orientation of the speaker devices 11 to 15 in accordance
with the detected distance and angle. [Selected figure] Figure 1
Sound system and speaker device
[0001]
The present invention relates to an acoustic system and a speaker device, and more particularly
to an acoustic system and a speaker device provided with an imaging unit.
[0002]
BACKGROUND Conventionally, an acoustic system provided with an imaging unit is known (see,
for example, Patent Document 1).
[0003]
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Patent Document 1 discloses a surround system (sound system) including a plurality of speakers
(speaker devices) and an imaging unit for detecting a listener (listener).
This surround system is configured to detect the position and orientation of the listener by the
imaging unit, and select a speaker that outputs sound from among a plurality of speakers
according to the position and orientation of the listener.
[0004]
JP, 2006-270522, A
[0005]
However, in the surround system (sound system) of Patent Document 1 above, a speaker for
outputting sound is selected from a plurality of speakers (speaker devices), and a plurality of
sounds corresponding to the position and direction of the listener (listener) are selected.
Although it is possible to create an excellent sound field while reducing the load on the listener
when adjusting the sound field by outputting from the speakers, it is necessary to install more
speakers than the number of speakers that output sound. is there.
Therefore, there is a problem that the number of speakers increases.
[0006]
The present invention has been made to solve the above problems, and one object of the present
invention is to increase the number of speaker devices while reducing the burden on the listener
when adjusting the sound field. It is an object of the present invention to provide an audio system
and a speaker device capable of creating an excellent sound field while suppressing the problem.
[0007]
The sound system according to the first aspect of the present invention includes a plurality of
speaker devices, an imaging unit for imaging the periphery of the speaker device, and a distance
and an angle between the speaker device and the listener based on an image captured by the
imaging unit. The drive control unit controls the drive of the drive unit, and the drive control unit
controls the speaker according to the distance and the angle detected by the detection unit. The
drive of the drive unit is controlled to change the orientation of the device.
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[0008]
In the sound system according to the first aspect of the present invention, as described above, the
drive control unit is provided to control the drive of the drive unit so as to change the direction
of the speaker device according to the distance and angle detected by the detection unit. Thus,
even if the position of the listener changes, the direction of the speaker device can be
automatically adjusted by the drive control unit and the sound can be output from the speaker
device toward the listener, so that the sound can be output. There is no need to install more
speaker devices than necessary.
As a result, while reducing the burden on the listener when adjusting the sound field, an excellent
sound field can be created while suppressing an increase in the number of speaker devices.
[0009]
In the sound system according to the first aspect, preferably, a storage unit in which position
detection information for detecting a distance and an angle between the speaker device and the
listener in accordance with an image captured by the imaging unit is stored in advance. The
detection unit is further configured to detect a distance and an angle between the speaker device
and the listener based on the image captured by the imaging unit and the position detection
information of the storage unit.
According to this structure, the distance and the angle between the speaker device and the
listener can be easily detected based on the captured image and the position detection
information.
[0010]
In the sound system according to the first aspect, preferably, the imaging unit is configured to
detect the head of the listener, and the drive control unit is configured to detect the distance and
the angle detected by the detection unit. The drive of the drive unit is controlled to direct the
speaker device toward the head of the listener.
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According to this configuration, the sound output from the speaker device can be directed to the
head (ear) of the listener, so that an excellent sound field can be easily created.
[0011]
In this case, preferably, in the case where there are a plurality of listeners, the drive control unit
is a speaker device toward one of the heads of the plurality of listeners according to the distance
and the angle detected by the detection unit. It is configured to control the drive of the drive unit
so that it faces. According to this configuration, when there are a plurality of listeners, it is
possible to create an excellent sound field for any one listener.
[0012]
In the sound system according to the first aspect, preferably, the imaging unit is attached to at
least one of the plurality of speaker devices so as to be able to capture an image in a direction in
which the sound of the speaker device is output. According to this configuration, the output
direction of the sound by the speaker device and the imaging direction by the imaging unit can
be aligned, so the speaker device can be easily turned to the listener based on the detection
result of the listener by the imaging device. So can be adjusted.
[0013]
In this case, preferably, the imaging unit is attached to each of the plurality of speaker devices.
According to this configuration, the listener can be accurately detected by the imaging units
respectively provided to the plurality of speaker devices.
[0014]
In the sound system according to the first aspect, preferably, the plurality of speaker devices
each include a driving unit. According to this structure, the directions of the plurality of speaker
devices can be easily changed by the driving units respectively provided to the plurality of
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speaker devices, so that the plurality of speaker devices can be easily directed to the listener. Can
be adjusted.
[0015]
In the sound system according to the first aspect, preferably, the drive unit includes a horizontal
drive unit that adjusts the horizontal direction of the speaker device, and a vertical drive unit that
adjusts the vertical direction of the speaker device. According to this structure, the speaker
device can be accurately adjusted to face the listener's head (ear).
[0016]
In the sound system according to the first aspect, preferably, the drive control unit is configured
to direct each of the plurality of speaker devices toward the listener when the plurality of
speaker devices are disposed to surround the listener. The driving unit is configured to control
the driving of the driving unit. With this configuration, a plurality of speaker devices can be
directed toward the listener while surrounding the listener, so that an excellent sound field of
surround sound can be easily created.
[0017]
In the sound system according to the first aspect, preferably, the sound control device for
outputting an audio signal to the speaker device is further provided, and the drive control unit
controls each of the plurality of speaker devices from the listener based on imaging of the
imaging unit. The distance information is configured to be transmitted to the sound control
device, and the sound control device is configured to output an audio signal to each of the
plurality of speaker devices based on the distance information received from the drive control
unit. There is. According to this structure, since the audio control device can output an audio
signal corresponding to the distance of each of the plurality of speaker devices to each of the
plurality of speaker devices, a more excellent sound field can be created.
[0018]
A speaker device according to a second aspect of the present invention includes a speaker device
body portion, a speaker device body portion and a listener based on a speaker device body
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portion, an imaging portion for imaging the periphery of the speaker device body portion, and an
image captured by the imaging portion. And a drive control unit for controlling the drive of the
drive unit, and the drive control unit detects the distance detected by the detection unit and the
drive control unit for controlling the drive of the drive unit. The drive of the drive unit is
controlled to change the direction of the speaker device body according to the angle.
[0019]
In the speaker device according to the second aspect of the present invention, as described
above, the drive control unit controls the drive of the drive unit to change the direction of the
speaker device body according to the distance and the angle detected by the detection unit. By
providing the above, even if the position of the listener changes, the drive control unit can
automatically adjust the direction of the speaker device main body and output sound from the
speaker device main body toward the listener. It is not necessary to install more speaker devices
than the number required to output sound.
As a result, while reducing the burden on the listener when adjusting the sound field, an excellent
sound field can be created while suppressing an increase in the number of speaker devices.
[0020]
According to the present invention, as described above, it is possible to create an excellent sound
field while suppressing an increase in the number of speaker devices while reducing the burden
on the listener when adjusting the sound field. .
[0021]
FIG. 1 is a general view showing an outline of an acoustic system according to an embodiment of
the present invention.
FIG. 1 is a block diagram illustrating a speaker apparatus according to an embodiment of the
present invention. FIG. 5 is a block diagram illustrating a subwoofer according to an embodiment
of the present invention. FIG. 1 is a block diagram illustrating a playback device according to an
embodiment of the present invention. FIG. 5 is a diagram showing a parameter table of the
playback device according to one embodiment of the present invention. It is a flowchart for
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demonstrating the sound field adjustment process by the control part of the speaker apparatus
by one Embodiment of this invention, the control part of reproducing | regenerating apparatus,
and DSP.
[0022]
Hereinafter, embodiments of the present invention will be described based on the drawings.
[0023]
First, the configuration of an acoustic system 100 according to an embodiment of the present
invention will be described with reference to FIGS. 1 to 5.
[0024]
As shown in FIG. 1, the sound system 100 includes speaker devices 11 to 15, a subwoofer 16, a
reproduction device 20, and a display device 30.
The speaker devices 11 to 15, the subwoofer 16 and the display device 30 are connected to the
playback device 20, respectively.
Thus, the sound reproduced by the reproduction device 20 can be output from the speaker
devices 11 to 15 and the subwoofer 16, and the image to be reproduced can be displayed on the
display device 30. The sound system 100 also supports 5.1 channel surround sound. The
reproduction device 20 is an example of the “sound control device” in the present invention.
[0025]
The speaker devices 11 to 15 and the subwoofer 16 are arranged to surround one listener
(listener). Specifically, the speaker device 11 is disposed as a center speaker at the front center of
the listener, the speaker device 12 is disposed as a front left speaker at the front left of the
listener, and the speaker device 13 is disposed at the front right at the front right of the listener
It is arranged as a speaker. The speaker device 14 is disposed on the rear left side of the listener
as a surround left speaker, and the speaker device 15 is disposed on the rear right side of the
listener as a surround right speaker. The subwoofer 16 is disposed in front of the listener. This
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enables the listener to listen to a sound with a sense of three-dimensionality and presence.
[0026]
The speaker devices 11 to 15 have the same configuration as each other. The speaker apparatus
11 (12-15) is provided with the speaker apparatus main-body part 11a (12a-15a), as shown in
FIG. In the speaker device body 11a (12a to 15a) of the speaker device 11 (12 to 15), the control
unit 1, the memory 1a, the communication unit 2, the camera 3, the drive unit 4, the speaker 5,
and Is provided. The drive unit 4 includes a horizontal drive unit 4a and an upper and lower
drive unit 4b. The speaker device body 11a (12a to 15a) is configured to be changeable in the
horizontal direction and the vertical direction. That is, the horizontal direction and the vertical
direction of the sound output from the speaker device body 11a (12a to 15a) can be adjusted.
The memory 1a is for position detection for detecting the distance and angle between the
speaker device 11 (12 to 15) (speaker device main body 11a (12a to 15a)) and the listener
according to the image captured by the camera 3 Information 1 b is stored in advance. The
control unit 1 is an example of the “detection unit” and the “drive control unit” in the
present invention. The memory 1 a is an example of the “storage unit” in the present
invention, and the camera 3 is an example of the “imaging unit” in the present invention.
[0027]
The control part 1 of the speaker apparatus 11 (12-15) is comprised so that each part of the
speaker apparatus 11 (12-15) may be controlled. Specifically, the control unit 1 is configured to
be able to transmit and receive signals with the reproduction device 20 via the communication
unit 2. The control unit 1 is also configured to detect a listener by the camera 3. The control unit
1 is also configured to control the drive of the drive unit 4 to adjust the direction of the speaker
device 11 (12 to 15) (speaker device main unit 11a (12a to 15a)). Further, the control unit 1 is
configured to perform control to output sound from the speaker 5.
[0028]
Here, in the present embodiment, the control unit 1 of the speaker device 11 (12 to 15) sets the
speaker device 11 (12 to 15) (the speaker device main portion 11a (12a to 12 15a)) and the
listener are configured to detect the distance and angle. Specifically, the control unit 1 of the
speaker device 11 (12 to 15) selects the speaker device 11 (12 to 15) (an image based on the
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image captured by the camera 3 and the position detection information 1b of the memory 1a).
The distance and the angle between the speaker device body 11a (12a to 15a) and the listener
are configured to be detected. The position detection information 1b is used to calculate an angle
based on information for calculating a distance based on the size of the listener in the captured
image and on the position of the listener in the captured image. And information. The control
unit 1 is also configured to transmit distance information from the detected listener to the
speaker devices 11 (12 to 15) to the reproduction device 20 via the communication unit 2.
[0029]
Further, in the present embodiment, the control unit 1 of the speaker device 11 (12 to 15) selects
the speaker device 11 (12 to 15) (speaker device main portion 11a (12a to 15a) according to the
detected distance and angle. Is configured to control the drive of the drive unit 4 such that the
driver 4 is directed to the listener. Specifically, the control unit 1 detects the listener by the
camera 3 and drives the horizontal drive unit 4 a of the drive unit 4 so that the listener is imaged
at the center by the camera 3 and the speaker device body 11 a (12 a It is configured to turn
15a) horizontally. The control unit 1 also drives the vertical drive unit 4b of the drive unit 4
based on the result of detection of the head of the listener by the camera 3 to set the speaker
device body 11a (12a to 15a) to the head of the listener. It is configured to move up and down to
the height position.
[0030]
The camera 3 is configured to detect a listener. Specifically, the camera 3 is configured to
capture an area around the speaker device 11 (12 to 15). Also, the camera 3 is configured to
detect the head of the listener. Specifically, the camera 3 is configured to detect the face and
back of the head of the listener. That is, the camera 3 is configured to be able to detect the head
of the listener from any of the front, side and rear directions of the listener. Further, as shown in
FIG. 1, the camera 3 is attached to the speaker device 11 (12 to 15) so as to be capable of
imaging in the direction in which the sound of the speaker device 11 (12 to 15) is output. The
camera 3 also includes a distance image sensor. Thereby, it is possible to acquire the distance
from the speaker device 11 (12 to 15) to the listener.
[0031]
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The driving unit 4 is configured to rotate the speaker device body portions 11a (12a to 15a)
((speaker devices 11 (12 to 15)) to change the direction. Specifically, the horizontal drive unit 4a
of the drive unit 4 is configured to rotate the speaker device body 11a (12a to 15a) in the
horizontal direction. The vertical drive unit 4b of the drive unit 4 is configured to move up and
down by sliding the speaker device main unit 11a (12a to 15a) in the vertical direction (vertical
direction).
[0032]
The speaker 5 is configured to output a sound corresponding to the sound signal transmitted
from the reproduction device 20.
[0033]
The subwoofer 16 is provided with the main-body part 16a, as shown in FIG.
The control unit 6, the communication unit 7, the distance sensor 8, and the speaker 9 are
provided in the main body unit 16 a of the subwoofer 16. Further, the subwoofer 16 is
configured to mainly output sound in the low frequency range of 100 Hz or less. Also, the
subwoofer 16 is configured to be used stationary. Further, unlike the speaker devices 11 to 15,
the subwoofer 16 outputs a sound in a low frequency band having almost no directivity, so that
the direction is not adjusted.
[0034]
The controller 6 of the subwoofer 16 is configured to control each part of the subwoofer 16.
Specifically, the control unit 6 is configured to be able to transmit and receive signals to and from
the reproduction device 20 via the communication unit 7. Further, the control unit 6 is
configured to detect the distance from the subwoofer 16 to the listener by the distance sensor 8.
In addition, the control unit 6 is configured to perform control to output sound from the speaker
9.
[0035]
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Further, the control unit 6 of the subwoofer 16 is configured to acquire distance information
from the listener to the subwoofer 16 based on the detection result of the distance sensor 8.
Further, the control unit 6 is configured to transmit the acquired distance information to the
reproduction device 20 via the communication unit 7. The speaker 9 is configured to output a
sound corresponding to the sound signal transmitted from the reproduction device 20.
[0036]
As shown in FIG. 4, the playback device 20 includes a control unit 21, a DSP (digital signal
processor) 22, a communication unit 23, a memory 24, a BD (Blu-ray disc) drive 25, and an
amplifier 26. There is.
[0037]
The control unit 21 of the playback device 20 is configured to control each part of the playback
device 20.
In addition, the control unit 21 is configured to be able to transmit and receive signals with the
DSP 22. The control unit 21 is configured to be able to transmit and receive signals with each of
the speaker devices 11 to 15 and the subwoofer 16 via the communication unit 23. The control
unit 21 is also configured to control the BD drive 25 to reproduce BD (Blu-ray Disc).
[0038]
The control unit 21 of the reproduction device 20 is configured to acquire distance information
from each of the speaker devices 11 to 15 and the subwoofer 16 via the communication unit 23.
Further, the control unit 21 is configured to transmit distance information acquired from each of
the speaker devices 11 to 15 and the subwoofer 16 to the DSP 22.
[0039]
Here, in the present embodiment, the DSP 22 is configured to process the audio signal of BD
reproduced by the BD drive 25 and output the processed audio signal to the amplifier 26. The
DSP 22 is also configured to process an audio signal corresponding to 5.1 channel surround
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sound for each of the corresponding speaker devices 11 to 15 and the subwoofer 16. Also, the
DSP 22 processes audio signals to be output to the speaker devices 11 to 15 and the subwoofer
16 based on the distance information of the speaker devices 11 to 15 and the subwoofer 16
received from the control unit 21. It is configured. Specifically, the DSP 22 is configured to adjust
the balance between the sound pressure of the sound to be output and the delay time (delay
time) based on the distance information of each of the speaker devices 11 to 15 and the
subwoofer 16 . Specifically, the DSP 22 is based on the distance information of the speaker
devices 11 to 15 and the subwoofer 16 and the parameter table 24a (see FIG. 5) stored in the
memory 24. It is comprised so that the sound pressure and delay time of the audio | voice output
to each may be adjusted. Thereby, it is possible to cause the sound output from each of the
speaker devices 11 to 15 and the subwoofer 16 to reach the listener in a balanced manner.
[0040]
Here, as shown in FIG. 5, relative values of sound pressure and delay time are defined in advance
according to the distance from the listener to the speaker devices 11 to 15 and the subwoofer 16
in the parameter table 24a. Here, when the distance is 1 m and the delay time is 1, the sound
pressure and the delay time of other distances are determined as relative values. Also, the sound
pressure is set to increase as the distance increases, and the delay time is set to increase the
value as the distance decreases and to increase the audio delay.
[0041]
The amplifier 26 is configured to amplify the audio signal of each of the speaker devices 11 to
15 and the subwoofer 16 output from the DSP 22 and output the amplified audio signal to each
of the speaker devices 11 to 15 and the subwoofer 16.
[0042]
The display device 30 is configured to display an image of a BD reproduced by the reproduction
device 20.
[0043]
Next, sound field adjustment processing performed by the control unit 1 of the speaker device 11
(12 to 15), the control unit 21 of the reproduction device 20, and the DSP 22 will be described
with reference to FIG.
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This process is continuously executed when the playback device 20 is outputting an audio signal.
That is, the sound field is readjusted each time the position of the listener changes. Further, this
process is executed by the control unit 1 and the control unit 21 and the DSP 22 of the
reproduction device 20 for each of the speaker devices 11 to 15. Here, processing of the control
unit 1 of the speaker device 11 and the control unit 21 and the DSP 22 of the reproduction
device 20 will be described. The same processing is executed for the processing of the control
unit 1 of the speaker devices 12 to 15 and the control unit 21 and the DSP 22 of the
reproduction device 20.
[0044]
In step S1, the control unit 1 of the speaker device 11 determines whether the camera 3 has
captured the listener at the center of the field of view in the horizontal direction. That is, the
control unit 1 determines whether the speaker device 11 (speaker device main body 11 a) is
directed to the listener in the horizontal direction. If the listener is not at the center, the process
proceeds to step S2. If the listener is at the center, the process proceeds to step S4. The
controller 1 horizontally rotates the speaker device 11 in step S2. Specifically, the control unit 1
causes the camera 3 to capture the listener in the center of the field of view based on the
detected angle between the speaker device 11 (speaker device main body 11a) and the listener.
To drive the speaker device 11 (speaker device main body 11a) in the horizontal direction. That
is, the control unit 1 drives the horizontal drive unit 4a such that the speaker device 11 (speaker
device main body 11a) faces the listener.
[0045]
In step S3, the control unit 1 of the speaker device 11 stops the rotation at a position where the
camera 3 captures the listener in the center of the field of view in the horizontal direction. That
is, the control unit 1 stops the driving of the horizontal drive unit 4a in a state where the speaker
device 11 (speaker device main body 11a) faces the listener. In step S4, the control unit 1 raises
and lowers the speaker device 11 (the speaker device body 11a) to the position of the head of
the listener. Specifically, based on the detection result of the camera 3, the control unit 1 drives
the vertical drive unit 4b to slide the speaker device 11 (speaker device main body portion 11a)
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up and down to the position of the head of the listener. Move up and down.
[0046]
In step S5, the control unit 1 of the speaker device 11 obtains distance information from the
speaker device 11 to the listener. Specifically, the control unit 1 acquires distance information
from the speaker device 11 to the listener based on the image captured by the camera 3 and the
position detection information 1b of the memory 1a. In step S6, the control unit 1 transmits the
acquired distance information of the listener to the control unit 21 of the reproduction device 20
via the communication unit 2. Thereafter, the sound field adjustment processing is ended. Thus,
the direction of the speaker device 11 with respect to the current position of the listener is
adjusted.
[0047]
In parallel to the control of the control unit 1 of the speaker device 11, in step S11, the control
unit 21 of the reproduction device 20 determines whether or not the distance information of the
listener is received from the speaker device 11 via the communication unit 23. . If the distance
information of the listener is not received, the control unit 21 repeats this determination until the
distance information of the listener is received. If the distance information of the listener is
received, the control unit 21 transmits the received distance information of the listener to the
DSP 22 inside the reproduction device 20 in step S12. Thereafter, the sound field adjustment
processing is ended.
[0048]
In parallel with the control of the control unit 1 of the speaker device 11 and the control of the
control unit 21 of the reproduction device 20, in step S21, the DSP 22 of the reproduction device
20 receives the distance information of the listener from the control unit 21 inside the
reproduction device 20. It is determined whether or not it has been received. If the listener's
distance information is not received, the DSP 22 repeats this determination until the listener's
distance information is received. If the distance information of the listener is received, the DSP
22 selects and sets parameters for processing the audio signal to be output to the speaker device
11 in step S22. Specifically, the DSP 22 selects and sets parameters for processing an audio
signal to be output to the speaker device 11 based on the distance information of each of the
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speaker device 11 and the parameter table 24 a stored in the memory 24. .
[0049]
The DSP 22 of the reproduction device 20 outputs the audio signal to the amplifier 26 in step
S23. Thereafter, the sound field adjustment processing is ended. As a result, the voice is output
from the speaker device 11 in the state of being directed to the listener toward the listener.
[0050]
In the present embodiment, as described above, according to the detected distance and angle, the
drive unit 4 causes the speaker device 11 (12 to 15) (speaker device main portion 11a (12a to
15a)) to face the listener. By providing the control unit 1 for controlling the drive of the speaker,
the control unit 1 automatically adjusts the direction of the speaker device 11 (12 to 15)
(speaker device main unit 11a (12a to 15a)) even if the position of the listener changes. Then,
since audio can be output from the speaker devices 11 (12 to 15) toward the listener, it is not
necessary to install more speaker devices than the number required to output audio. As a result,
while reducing the load on the listener when adjusting the sound field, an excellent sound field
can be created while suppressing an increase in the number of speaker devices.
[0051]
Further, in the present embodiment, as described above, the control unit 1 includes the speaker
device 11 (12 to 15) and the listener based on the image captured by the camera 3 and the
position detection information 1b of the memory 1a. Is configured to detect the distance and the
angle of the speaker, so that the distance and the angle between the speaker device 11 (12 to 15)
and the listener can be easily detected based on the captured image and the position detection
information 1b. be able to.
[0052]
Further, in the present embodiment, as described above, the camera 3 is configured to detect the
head of the listener, and the control unit 1 of the speaker device 11 (12 to 15) is detected
according to the detected distance and angle. The speaker device 11 (12 to 15) (the speaker
device body 11a (12a to 15a)) is configured to control the drive of the drive unit 4 so as to face
the head of the listener. Since the sound output from 11 (12 to 15) can be directed to the head
(ear) of the listener, an excellent sound field can be easily created.
03-05-2019
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[0053]
Further, in the present embodiment, as described above, the camera 3 is attached to the speaker
device 11 (12 to 15) so that it can be imaged in the direction in which the sound of the speaker
device 11 (12 to 15) is output. Since the output direction of the sound by the speaker device 11
(12 to 15) and the imaging direction by the camera 3 can be made uniform by this, the speaker
device 11 (12 to 15) (based on the detection result of the listener by the camera 3) The speaker
device body 11a (12a to 15a) can be adjusted to face the listener.
[0054]
Further, in the present embodiment, as described above, by attaching the camera 3 to each of the
speaker devices 11 to 15, the listener can be accurately detected by the cameras 3 respectively
provided to the speaker devices 11 to 15. .
[0055]
Moreover, in the present embodiment, as described above, by providing the drive units 4 in the
speaker devices 11 to 15, respectively, the directions of the speaker devices 11 to 15 can be
easily changed. It can adjust so that 15 (speaker apparatus main-body parts 11a-15a) may be
easily turned to a listener.
[0056]
Further, in the present embodiment, as described above, the horizontal drive unit 4a for adjusting
the horizontal direction of the speaker device 11 (12 to 15) and the vertical direction of the
speaker device 11 (12 to 15) in the drive unit 4 The speaker device 11 (12 to 15) can be
accurately adjusted to be directed to the head (ear) of the listener by providing the vertical drive
unit 4b for adjusting the direction of the speaker.
[0057]
Further, in the present embodiment, as described above, when the control units 1 of the speaker
devices 11 to 15 are arranged so that the speaker devices 11 to 15 surround the listener, the
speaker devices 11 to 15 are listeners respectively. By controlling the driving of the drive unit 4
so as to turn to the direction, the speaker devices 11 to 15 can be respectively directed to the
listener in a state of surrounding the listener, which facilitates the excellent sound field of the
surround sound. It can be built into.
03-05-2019
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[0058]
Further, in the present embodiment, as described above, the control unit 1 of the speaker device
11 (12 to 15) reproduces the distance information from the listener based on the imaging of the
camera 3 to the speaker device 11 (12 to 15). From the playback device 20 by configuring the
playback device 20 to output audio signals to each of the speaker devices 11 to 15 based on the
distance information received from the control unit 1. Since an audio signal according to the
distance of each of the speaker devices 11 to 15 can be output to the speaker devices 11 to 15,
respectively, a more excellent sound field can be created.
[0059]
It should be understood that the embodiments disclosed herein are illustrative and nonrestrictive in every respect.
The scope of the present invention is indicated not by the description of the embodiments
described above but by the claims, and further includes all modifications within the meaning and
scope equivalent to the claims.
[0060]
For example, although the above-mentioned embodiment showed an example of composition
using a reproduction device containing BD drive as a sound control device of the present
invention, the present invention is not limited to this.
In the present invention, a device other than the playback device may be used as the sound
control device.
For example, an audio device such as an AV amplifier or an AV receiver may be used as the audio
control device.
[0061]
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Further, in the above embodiment, in the audio system, an example of a configuration in which
the speaker device of the present invention is applied to five speaker devices of center speaker,
front left speaker, front right speaker, surround left speaker and surround right speaker is
shown. However, the present invention is not limited to this.
As long as the sound system includes a plurality of speaker devices, the speaker device according
to the present invention may be applied to four or less or six or more speaker devices.
For example, three speaker devices, a center speaker, a front left speaker, and a front right
speaker, may be used as the speaker device of the present invention.
[0062]
Further, in the above embodiment, an example of a configuration in which the sound system
corresponds to 5.1 channel surround sound is shown, but the present invention is not limited to
this.
In the present invention, the sound system may be configured to correspond to channels other
than 5.1 channel.
[0063]
In the above embodiment, in the sound system, an example is shown in which five speaker
devices having the same configuration as the center speaker, the front left speaker, the front
right speaker, the surround left speaker, and the surround right speaker as the speaker devices
of the present invention However, the present invention is not limited to this.
In the present invention, each speaker device may be configured differently.
For example, the detection unit, the drive control unit, the imaging unit, and the drive unit need
not be provided in all of the plurality of speaker devices, but the detection unit, the drive control
unit, the imaging unit, and the drive unit are provided in only one speaker device. It may be done.
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Further, the sound system may be one in which the detection unit, the drive control unit, the
imaging unit, and the drive unit are provided in a device different from the speaker device.
[0064]
Moreover, although the example of the structure by which the camera (imaging part) is each
provided in the several speaker apparatus of this invention was shown in the said embodiment,
this invention is not limited to this. In the present invention, in the sound system, an imaging unit
may be provided in at least one of the plurality of speaker devices. In this case, the imaging result
by the imaging unit may be shared by a plurality of speaker devices.
[0065]
Moreover, although the example in the case of one listener (listener) was shown in the said
embodiment, this invention is not limited to this. In the present invention, there may be a
plurality of listeners. In this case, the speaker device may be configured to face the one listener
among a plurality of listeners, or if the speaker device is configured to face the listener, a
plurality of speakers may be provided. It may be configured to be directed towards the center of
the listener's middle. For example, when a plurality of listeners are present in the drive control
unit, the speaker device may be directed toward the head of any one of the plurality of listeners
according to the distance and the angle detected by the detection unit. The drive of the drive unit
may be controlled.
[0066]
Moreover, although the example which adjusts the sound pressure and delay time of several
speaker apparatus using a parameter table was shown in the said embodiment, this invention is
not limited to this. In the present invention, the sound pressure and the delay time may be
adjusted by performing an operation based on distance information from the speaker device to
the listener. In addition, items other than the sound pressure and delay time of a plurality of
speaker devices, such as sound quality, may be adjusted. Further, items such as the sound
pressure and the delay time of the plurality of speaker devices may be individually adjusted by
the listener.
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[0067]
Further, although the example in which the speaker device is horizontally rotated by the
horizontal drive unit has been described in the above embodiment, the present invention is not
limited to this. In the present invention, the speaker device may be slid in the horizontal direction
by the horizontal drive unit, or may be moved by both rotation and slide movement.
[0068]
Further, in the above embodiment, an example in which the speaker device is configured to slide
in the vertical direction by the vertical drive unit has been described, but the present invention is
not limited to this. In the present invention, the speaker device may be rotated in the vertical
direction by the vertical drive unit, or may be moved by both rotation and sliding movement.
[0069]
In the above embodiment, for convenience of explanation, the processing of the drive control unit
of the present invention has been described using a flow drive type flowchart that sequentially
performs processing along the processing flow, but the present invention is not limited to this. .
In the present invention, the processing operation of the drive control unit may be performed by
event-driven (event-driven) processing that executes processing on an event-by-event basis. In
this case, the operation may be completely event driven, or the combination of event driving and
flow driving may be performed.
[0070]
Reference Signs List 1 control unit (detection unit, drive control unit) 1a memory (storage unit)
1b position detection information 3 camera (imaging unit) 4 drive unit 4a horizontal drive unit
4b upper and lower drive units 11, 12, 13, 14, 15 Speaker device 11a, 12a, 13a, 14a, 15a
Speaker device main unit 20 Reproduction device (sound control device) 100 Sound system
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