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DESCRIPTION JP2010252102

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DESCRIPTION JP2010252102
PROBLEM TO BE SOLVED: To provide a new and improved technology capable of giving a
realistic feeling of a place where shooting and sound collection were performed by a viewer
watching a video taken and listening to collected audio. . A video / audio input / output system
(1) includes a video / audio input system (100) having a video input device (110) and a plurality
of audio input devices (120), a plurality of video output devices (210) and a plurality of audio
input devices (120). And an audio / video output system 200. The plurality of audio output
devices 220 are each configured by drawing a perpendicular line from a point where each of the
corresponding plurality of audio input devices 120 is installed to the display surface, and
reducing the image to the actual size It is installed at each position determined when it is reduced
or enlarged based on the center of the image according to the rate or the enlargement rate.
[Selected figure] Figure 1
Video audio input / output system
[0001]
The present invention relates to a video and audio input / output system.
[0002]
Generally, in order to convey the state of the concert hall where many spectators gather and the
hall where sporting events are held, the video acquired by shooting inside the hall and the audio
collected by collecting from the hall are used Ru.
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The viewer can know the situation of the hall by listening to the acquired audio while watching
the acquired video.
[0003]
Examples of techniques for outputting audio that a viewer listens to include stereo (stereo), 5.1
ch, 6.1 ch, and 7.1 ch surround (Surround). According to such a technology, the viewer can listen
to the sound while feeling the sense of presence as if he is in the hall. In addition, various things
are disclosed by the technique which outputs an audio | voice (for example, refer patent
document 1).
[0004]
JP 2007-208318 A
[0005]
However, according to the above-described technique, there is a problem that the sound image
can not be localized in the image.
A viewer who is not actually in the hall can feel the appearance of the hall more realistically by
listening to the audio output from the video while watching the video. If the audio output at that
time matches the video, the viewer can feel more realistically at the venue. In order to satisfy
these requirements, it is important to localize the sound image in the image.
[0006]
Therefore, the present invention has been made in view of the above problems, and an object of
the present invention is to allow a viewer to view a captured video and to capture and collect
sound by listening to collected audio. It is an attempt to provide new and improved technology
that makes it possible to realistically feel the appearance of the place where it was made.
[0007]
To solve the above problems, according to one aspect of the present invention, an image is
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acquired by photographing at a predetermined magnification in a predetermined direction, the
acquired image is converted into an electrical signal, and the converted electricity is obtained. It
is installed at each of the video input device that acquires the signal as a video signal and the
horizontal distance from the point where the video input device is installed and at multiple points
that differ in height, detects surrounding vibration, and detects the detected vibration An audio /
video input system having a plurality of audio input devices for converting into signals and
acquiring the converted electric signals as audio signals; and a display surface, based on the
video signals acquired by the video input device It has a video output device for outputting a
video on the display surface and a plurality of audio output devices corresponding to each of the
plurality of audio input devices, and the plurality of audio output devices are those of the
corresponding plurality of audio input devices When each foot of a perpendicular line in the case
where a perpendicular line is drawn from each point where the screen is installed is reduced or
enlarged based on the center of the image according to the reduction ratio or enlargement ratio
of the image to the actual size An audio / video input / output system is provided, which
comprises an audio / video output system installed at each of the positions determined in and
outputting audio based on an audio signal acquired by a corresponding audio input device.
[0008]
The plurality of audio output devices may be installed in an orientation capable of outputting
audio toward the center of the video.
[0009]
The audio / video output system delays the time when the audio is output by the time according
to the distance from the position where the plurality of audio input devices are installed to the
predetermined point, and transmits the audio to the corresponding plurality of audio output
devices. It may further include an output control device for outputting.
[0010]
The audio / video output system reduces the volume of the audio by the volume according to the
distance from the position where the plurality of audio input devices are installed to the
predetermined point, and outputs the audio to the corresponding plurality of audio output
devices The controller may be further included.
[0011]
The predetermined point may be a point appearing at the center of the image.
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[0012]
The video / audio input system generates an audio / video signal by combining the video signal
acquired by the video input device and each audio signal acquired by the plurality of audio input
devices, and uses the generated audio / video signal as a recording medium. The audio / video
output system further includes an input control device for recording, and the audio / video
output system reads out the audio / video signal recorded in the recording medium, extracts each
audio signal and video signal from the read audio / video signal, and extracts each audio signal
And an output control device for outputting the extracted video signal to the video output device
and outputting the extracted video signal to the audio output device corresponding to each audio
input device of the acquisition destination, the video output device being output by the output
control device The video is output to the display surface based on the video signal, and the
plurality of audio output devices output the audio based on the audio signal output by the output
control device. It is also possible.
[0013]
The video / audio input system generates an audio / video signal by combining the video signal
acquired by the video input device and each audio signal acquired by the plurality of audio input
devices, and outputs the generated audio / video signal as the video / audio signal. The audio /
video output system further includes an input control device for transmitting to the system, the
audio / video output system receives the audio / video signal transmitted from the audio / video
input system, and extracts each audio signal and video signal from the received audio / video
signal, The video output apparatus further includes an output control device that outputs each
extracted audio signal to each audio output device corresponding to each audio input device as
an acquisition destination and outputs the extracted video signal to the video output device. The
video is output to the display surface based on the video signal output by the device, and the
plurality of audio output devices are audio signals output by the output control device May
output audio based.
[0014]
As described above, according to the present invention, it is possible to realistically feel the
appearance of a place where shooting and sound collection were performed by watching a video
shot by a viewer and listening to collected sound.
[0015]
It is a block diagram of the audio-video input-output system which concerns on this embodiment.
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It is a figure which shows an example of a mode that a speech input device is installed.
It is a figure which shows an example of a mode that a voice output device is installed.
It is a figure for demonstrating calculation of the volume and delay time of an output audio |
voice.
It is a figure which shows the correspondence of the distance from a reference point, and the
magnitude | size (reduction amount of sound volume) of distance attenuation.
It is a figure which shows the correspondence of the distance from a reference point, and a delay
correction amount (delay time).
It is a figure which shows the relationship between the virtual position in which the center
microphone is installed, and a realistic position.
[0016]
The present invention will now be described more fully with reference to the accompanying
drawings, in which exemplary embodiments of the invention are shown.
In the present specification and the drawings, components having substantially the same
functional configuration will be assigned the same reference numerals and redundant description
will be omitted.
The description will be made in the following order.
[0017]
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1. First embodiment 1-1.
Configuration of video and audio input / output system 1-2. Configuration of video and audio
input system 1-3. Configuration of video and audio output system 1-4. Calculation of output
sound volume and delay time Modification of First Embodiment 3. まとめ
[0018]
<1. First Embodiment> A first embodiment of the present invention will be described.
[0019]
[1−1. Configuration of Video and Audio Input / Output System] FIG. 1 is a configuration
diagram of a video and audio input / output system according to the present embodiment. As
shown in FIG. 1, a video and audio input / output system 1 according to the present embodiment
includes a video and audio input system 100 and a video and audio output system 200. The
video and audio input system 100 is, for example, a system installed in a concert hall where
many spectators gather, a hall where sporting events are performed, and the like. However, the
place where the video and audio input system 100 is installed is not limited to these venues, and
may be any place where the video and audio to be viewed by the viewer can be acquired.
[0020]
The video and audio output system 200 is a system used by a viewer to view video and audio
acquired by the video and audio input system 100. For example, it is assumed that viewers who
can not go to the venue or viewers who can not go to the venue gather at a place away from the
venue and the gathered viewers view the situation of the venue together. Therefore, it is assumed
that the video and audio output system 200 is installed at a place apart from the hall where the
video and audio input system 100 is installed. For example, when the number of viewers is a
scale of one thousand or more, it is assumed that the video and audio output system 200 is
installed in a wide place. However, when the number of viewers is a scale such as a few, it is also
assumed that the video and audio output system 200 is installed in a narrow place such as a
home of a viewer individual.
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[0021]
[1−2. Configuration of Video and Audio Input System] The video and audio input system
100 includes at least a video input device 110 and a plurality of audio input devices 120.
Hereinafter, each apparatus which comprises the audio-video input system 100 is demonstrated,
referring FIG. 1 and FIG.
[0022]
FIG. 2 is a diagram showing an example of how a voice input device is installed. As shown in FIG.
2, the voice input device 120 is installed, for example, as low-layer microphones LM1 to LM7,
center microphones CM8, middle-layer microphones MM9 to 17, and high-layer microphones
HM18 and 19 at places reaching the soccer stadium. In the example shown in FIG. 2, low-layer
microphones LM1 to LM7 and center microphone CM8 are installed at the pitch level (low-layer),
middle-layer microphones MM9 to MM17 are installed at the stand level (middle-layer), and
high-rise microphone HM18 at the sky level (high-rise) , 19 are installed. In other words, a total
of 19ch of sound is realized using 8ch surround at the pitch level (low layer), 9ch surround at the
stand level (middle layer), and 2ch stereo at the sky level (high rise).
[0023]
The pitch level (low level), the stand level (middle level) and the sky level (high level) are different
in height. In this way, by reproducing the sound collected in the three layers of pitch level (low
level), stand level (middle level) and sky level (high level), the situation of the competition in the
soccer field can be reproduced more realistically Can. In the example shown in FIG. 2, the
number of layers is three, but the number of layers is not limited to this, and any number of
layers may be used. Also, one or more microphones may be set in each layer. In order to prevent
interference with the game, the center microphone CM 8 is configured by, for example, a
parabola antenna, and this is realized by suspending the parabola antenna from a distance.
[0024]
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Returning to FIG. 1, the description will be continued. The image input device 110 acquires an
image by photographing at a predetermined magnification in a predetermined direction, converts
the acquired image into an electric signal, and acquires the converted electric signal as an image
signal. The predetermined direction is not particularly limited, and can be freely determined as
desired by the viewer who views the video captured by the video input device 110. In addition,
the predetermined magnification is not particularly limited, and it is possible to freely determine
the magnification as desired by the viewer who looks at the video captured by the video input
device 110. However, since the video input device 110 shoots at a predetermined magnification
in a predetermined direction, a video in which a predetermined area is photographed in a fixed
manner is acquired. The position at which the video input device 110 is installed is not
particularly limited, and can be freely determined at a position desired by the viewer who views
the video captured by the video input device 110, for example, special It can be installed in front
of the seat. The video input device 110 is configured by, for example, a camera or the like.
[0025]
A plurality of audio input devices 120 are installed at each of a plurality of points different in
horizontal distance and height from the point where the video input device 110 is installed,
detect surrounding vibration, and convert the detected vibration into an electric signal And the
converted electric signal is acquired as an audio signal. The surrounding vibration is, for
example, a vibration of a medium (eg, air) in contact with the voice input device 120. The voice
input device 120 is configured of, for example, a microphone. In the example shown in FIG. 2, the
low-layer microphones LM1 to LM7, the center microphone CM8, the middle-layer microphones
MM9 to MM17, and the high-layer microphones HM18 and H19 are installed at different
heights. Also, in the example shown in FIG. 2, the microphones (low-layer microphones LM1 to
LM7, center microphone CM8, and middle-layer microphones are located at different positions
from the position where the video input device 110 is installed (for example, in front of special
seats). Microphones MM 9 to 17 and high-rise microphones HM 18 and 19) are installed.
[0026]
[1−3. Configuration of Video and Audio Output System] The video and audio output system
200 includes at least a video output device 210 and a plurality of audio output devices 220.
Hereinafter, each apparatus which comprises the audio-video output system 200 is
demonstrated, referring FIG. 1 and FIG.
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[0027]
FIG. 3 is a diagram showing an example of installation of the audio output device. As shown in
FIG. 3, the audio output device 220 is installed as speakers S1 to S19, for example, in the display
surface 211 of the video output device 210 or on the extension of the display surface 211. In the
example shown in FIG. 3, the speaker S8 is installed in the display surface 211, and the other
speakers S1 to S7 and S9 to S19 are installed on the extension of the display surface 211. The
speaker S8 is installed in alignment with the position of the center microphone CM8 appearing in
the image displayed on the display surface 211. Similarly, the speakers S1 to S7 and S9 to S19
are microphones (low-layer microphones LM1 to LM7, middle-layer microphones MM9 to MM7,
and middle-layer microphones MM9 to 17, which appear in the image displayed on the display
surface 211 when assuming that the imaging area is expanded infinitely. It is installed according
to the position of the high-rise microphone HM 18, 19). In the example shown in FIG. 3, the size
of the display surface (screen) 220 is 100 m in width and 20 m in height, but is not limited to
this size. Further, in the example shown in FIG. 3, the audio output device 220 (speakers S1 to
S19) is installed in a direction in which the audio can be output toward the center of the image
displayed on the display surface 211. .
[0028]
Returning to FIG. 1, the description will be continued. The video output device 210 has a display
surface 211, and outputs a video to the display surface 211 based on the video signal acquired
by the video input device 110. The video output device 210 is configured by, for example, a
display device such as a large screen or a television, but the type of the video output device 210
is not particularly limited.
[0029]
The plurality of voice output devices 220 correspond to each of the plurality of voice input
devices 120. The plurality of voice output devices 220 are each provided with a vertical line
when the perpendicular is drawn from the respective points where the corresponding plurality of
voice input devices 120 are respectively installed, to the image corresponding to the actual size.
It is installed at each position determined when reduced or enlarged with respect to the center of
the image according to the reduction ratio or enlargement ratio. However, each point at which
each of the plurality of voice input devices 120 serving as the starting point of the perpendicular
is installed refers to the case where the plurality of voice input devices 120 are virtually installed
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around the display surface 211. It points to each point. That is, when the video input device 110
is moved to the middle point of the display surface 211 while maintaining the positional
relationship and the orientation of each of the plurality of audio input devices 120 and the video
input device 110 which are actually installed. The post-movement and post-rotation positions of
the plurality of voice input devices 120 determined on the assumption that it is appropriately
rotated are assumed to be points. The appropriate rotation means, for example, matching the
direction of the line of sight of the viewer when the viewer views the image displayed on the
display surface 211 in the direction perpendicular to the display surface 211 with the abovedescribed predetermined direction. It is like a rotation. The voice output device 220 outputs
voice based on the voice signal acquired by the corresponding voice input device 120. The
plurality of audio output devices 220 are configured by, for example, a speaker or the like.
[0030]
Further, the plurality of audio output devices 220 may be installed in a direction in which audio
can be output toward the center of the video displayed on the display surface 211. According to
such a configuration, it is possible to match the origin of the video and the audio.
[0031]
The video and audio output system 200 may include an output control device 230. The output
control device 230 delays the time when the voice is output by the time according to the distance
from the position where the plurality of voice input devices 120 are installed to the
predetermined point, and sends the delay to the corresponding plurality of voice output devices
220. It is intended to output voice. This is because the voice emitted from the voice input device
120 arrives later at a predetermined point as the distance from the position where the plurality
of voice input devices 120 are installed to the predetermined point increases. Since the plurality
of audio output devices 220 are installed in the display surface 211 or on the extension of the
display surface 211, the distance from the audio output device 220 to the viewer hardly varies
among the plurality of audio output devices 220 . Therefore, the output control device 230 may
adjust the time when the voice is output. The degree of delay to be generated will be described
later. The predetermined point is not particularly limited, but can be, for example, a point
appearing at the center of the image displayed on the display surface 211. In this way, it is
possible to match the origin of the video and the audio.
[0032]
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Further, the output control device 230 reduces the sound volume of the sound by the sound
volume according to the distance from the position where the plurality of sound input devices
120 are installed to a predetermined point, and outputs the sound to the corresponding plurality
of sound output devices 220 May be output. This is because as the distance from the position
where the plurality of voice input devices 120 are installed to the predetermined point is larger,
the voice emitted from the voice input device 120 arrives at the predetermined point as a smaller
volume. Since the plurality of audio output devices 220 are installed in the display surface 211
or on the extension of the display surface 211, the distance from the audio output device 220 to
the viewer hardly varies among the plurality of audio output devices 220 . Therefore, the volume
of the sound output from the output control device 230 may be adjusted. The degree of volume
reduction will be described later. The predetermined point is not particularly limited, but can be,
for example, a point appearing at the center of the image displayed on the display surface 211. In
this way, it is possible to match the origin of the video and the audio.
[0033]
The video and audio input system 100 may include the input control device 130. The input
control device 130 generates an audio-video signal by combining the video signal acquired by
the video input device 110 and each audio signal acquired by the plurality of audio input devices
120, and records the generated audio-video signal. It records on a medium. The input control
device 130 associates the time at which the video signal is acquired with the time at which each
audio signal is acquired, and combines the video signal and each audio signal.
[0034]
When the video and audio input system 100 has the input control device 130, the output control
device 230 reads out the audio and video signals recorded in the recording medium, and extracts
each audio signal and video signal from the read out audio and video signals. You may do it.
Further, in this case, the output control device 230 outputs the extracted audio signals to the
audio output devices 220 corresponding to the audio input devices 120 of the acquisition
destination and outputs the extracted video signals to the video output device 210. You may do
it. Furthermore, in this case, the video output device 210 outputs a video to the display surface
211 based on the video signal output by the output control device 230, and the plurality of audio
output devices 220 are output by the output control device 230. The voice may be output based
on the voice signal.
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[0035]
The video and audio input system 100 may have an input control device 130 having a function
different from the function of the input control device 130 as described above. That is, the input
control device 130 generates an audio-video signal by combining the video signal acquired by
the video input device 110 and each audio signal acquired by the plurality of audio input devices
120, and the generated audio-video signal May be transmitted to the video and audio output
system 200. The input control device 130 associates the time at which the video signal is
acquired with the time at which each audio signal is acquired, and combines the video signal and
each audio signal. For example, by the input control device 130 and the output control device
230 being configured to be communicable, it is possible to transmit and receive information
between the video and audio input system 100 and the video and audio output system 200. .
[0036]
When the video and audio input system 100 has such an input control device 130, the input
control device 130 receives the audio and video signal transmitted from the video and audio
input system 100, and generates each audio signal from the received audio and video signal. And
the video signal may be extracted. Further, in this case, the output control device 230 outputs the
extracted audio signals to the audio output devices 220 corresponding to the audio input devices
120 of the acquisition destination and outputs the extracted video signals to the video output
device 210. You may do it. Furthermore, in this case, the video output device 210 outputs a video
to the display surface 211 based on the video signal output by the output control device 230,
and the plurality of audio output devices 220 are output by the output control device 230. The
voice may be output based on the voice signal.
[0037]
[1−4. Calculation of Volume and Delay Time of Output Voice FIG. 4 is a diagram for
describing calculation of volume and delay time of output voice. FIG. 5 is a diagram showing the
correspondence between the distance from the reference point and the magnitude of the distance
attenuation (the amount of reduction in volume). FIG. 6 is a diagram showing the correspondence
between the distance from the reference point and the delay correction amount (delay time). FIG.
7 is a diagram showing the relationship between a virtual position where a center microphone is
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installed and a realistic position.
[0038]
Hereinafter, the calculation technology of the volume and the delay time of the sound output by
the audio output device 220 will be described with reference to FIGS. 4 to 7. In FIG. 4, for
convenience, positions of the low-layer microphones LM1 to LM7, the center microphone CM8,
the middle-layer microphones MM8 to MM12, and the speakers SP13 to SP19 are indicated by
"01" to "19", respectively.
[0039]
In addition, here, the width (screen width) of the display surface 211 of the video output device
210 is 20 m or less, and the audience (viewer) who views the SPV (display surface 211 (screen)
of the video output device 210) is within 20 m2 A calculation example assuming a case of a
small-scale SPV that will fit will be described. However, the size of the display surface 211 of the
video output device 210 and the size of the viewer are not limited to these.
[0040]
When a small-scale SPV is used as the display surface 211 of the video output device 210, the
microphones on the recording side of the distance from the speakers S1 to S19 to the spectator
17. Since it is small compared to the distance between the high-rise microphones HM18, 19), the
influence due to the difference in the position where each speaker of the venue where the SPV is
installed is neglected and calculated. When using a large-scale SPV close to real size, in addition
to the following calculation, the volume and delay time of the output voice are calculated by
subtracting the distance from the spectator to the position where the actual speaker exists. do it.
[0041]
First, since two reference points and one reference length are required, all reference point
reference points are determined. One of the reference points is the middle point of the vertical
line drawn from the middle point of the line connecting the low-layer microphone LM5 and the
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low-layer microphone LM6 to the front edge of the low-layer stand. This point is referred to as a
reference point A. However, the position of the reference point A is not particularly limited.
[0042]
Another reference point is the middle point of the vertical line drawn from the center of the
display surface 211 (screen) to the middle-layer microphone MM17 above the stand, which is
used as the adjustment reference of the sound behind the SPV's audience seat. Let this be a
reference point B. However, the position of the reference point B is not particularly limited. The
middle microphones MM13 and MM14 are located slightly in front of the SPV's spectator seat
(display surface 211 (screen) side), but the pitch at which the players play is the front screen
(display surface 211 (screen) side) Because it is in), I will put in the group of the sound behind
the audience seat.
[0043]
This reference point B corresponds to the center of the actual audition point. The positions of the
speakers S13 to S19 specified here are positions for convenience when installed on a stadiumsized real size SPV, and indicate the positions of the speakers S13 to S19 installed when using a
small-scale SPV. is not.
[0044]
Next, a reference length that is a reference for distance attenuation is calculated. The reference
length is a distance from the reference point A to the low-layer microphone LM6 (or the lowlayer microphone LM5). When the distance between the low-layer microphone LM5 and the lowlayer microphone LM6 to the front edge of the low-layer stand is 28 m and the distance from the
center line to the low-layer microphone LM6 is 30 m, the reference length is calculated by the
following formula (1) It is possible.
[0045]
√(14m×14m+30m×30m)=33m …(1)
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[0046]
However, the method of calculating the reference length is not limited to such a method.
In addition, it may be determined by actually measuring the reference length.
[0047]
Next, calculate the distance from the reference point A to the low-layer microphones LM1 to
LM7, the center microphone CM8, the middle-layer microphones MM8 to MM12, and the
reference point B to the speakers SP13 to SP19 Calculate (delay time). Here, the distance from
the reference point A to the low-layer microphones LM1 to LM7, the center microphone CM8,
and the middle-layer microphones MM8 to MM12 may be a horizontal distance, but the distance
from the reference point B to SP13 to SP19 is three-dimensional including the height. To
calculate the distance.
[0048]
By doing this, the voice in front of the pitch calculated based on the reference point A moves to a
position centered on the reference point B and is localized behind the screen (display surface
211), and the screen (display surface 211) It is possible to form a sound field that audibly
matches with the overhead image projected on the Assuming that each distance is X, the distance
attenuation (reduced sound volume) is derived by the following equation (2).
[0049]
20×log(33m/Xm)dB …(2)
[0050]
For example, since the distance from the reference point A to the low-layer microphone LM1 is
92 m, the distance attenuation (decrease sound volume) is calculated as −8.9 dB according to
the above formula (2).
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Similarly, the delay correction value is also derived by the following formula (3).
[0051]
Xm / 340m / s × 1000ms / s (3) (however, the sound speed is calculated as 340m / s)
[0052]
For example, since the distance from the reference point A to the low-layer microphone LM1 is
92 m, the distance attenuation is calculated to be 271 ms according to the above equation (3).
First, the correction values of the elements of all the channels except for the recording sound by
the center microphone CM 8 are calculated by this formula (3). In the case of an SPV that does
not use the center microphone CM8, the correction value calculated here becomes the delay
correction value as it is.
[0053]
Since the center microphone CM8 picks up the sound centered around the front edge of the
center circle with a parabola microphone, a large spatial delay is included at the time of
recording, and this delay has to be inversely corrected.
[0054]
The virtual position (virtual 08) of the center microphone CM8 is 41 m from the reference point
A.
However, since the actual position of the center microphone CM8 is 73 m away from the virtual
position, correction is performed by adding a negative delay equivalent to 32 m of the difference
to all channels except the center microphone CM8.
[0055]
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For example, although the distance from the reference point A to the low-layer microphones LM1
to LM7 is 92 m, the inverse correction is added to calculate 124 m, and the distance attenuation
is 365 ms according to the above-described calculation formula (3).
[0056]
In the case of a large-scale SPV, for example, since the rear speaker approaches the actual sound
source position, distance attenuation and delay correction become almost unnecessary, and lowlayer microphones LM1 to LM7, center microphone CM8, and middle-layer microphone from
reference point A With regard to MM8 to MM12, calculation may be performed by subtracting
the distance from the distance calculated above to the actual speaker installation position.
[0057]
<2.
Modification of First Embodiment> Although the preferred embodiment of the present invention
has been described with reference to the accompanying drawings, it goes without saying that the
present invention is not limited to such an example.
It will be apparent to those skilled in the art that various changes or modifications can be
conceived within the scope of the appended claims, and of course these also fall within the
technical scope of the present invention. It is understood.
[0058]
<3. Summary> According to the present embodiment, it is possible to realistically feel the
appearance of the place where the shooting and the sound collection were performed by
watching the captured video and listening to the collected sound.
[0059]
1 audio / video input / output system 100 audio / video input system 110 audio input apparatus
120 audio input apparatus 130 input control apparatus 200 audio / video output system 210
image output apparatus 211 display surface 220 audio output apparatus 230 output control
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apparatus LM1 to LM7 low-layer microphone CM8 center Microphone MM9 ~ MM17 middle
layer microphone HM18, HM19 high-rise microphone S1 ~ S19 speaker
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