close

Вход

Забыли?

вход по аккаунту

?

DESCRIPTION JP2012238970

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JP2012238970
The present invention performs multi-channel sound system sound reproduction with a high
sense of reality by using a plurality of speakers arranged around a display. A multi-channel
speaker device 1 according to the present invention is disposed around a display using a headrelated transfer function for an upper layer signal other than a front signal and a middle layer
signal other than a front signal, corresponding to a multi-channel audio system. A multi-channel
speaker system 1 for performing multi-channel sound system sound reproduction from a
plurality of speakers 19 and 20, wherein an upper layer signal reproduction speaker 19
reproduces an upper layer signal other than a front signal; And the upper layer signal
reproduction speaker 19 is disposed above the display DIS, and the middle layer signal
reproduction speaker 20 is disposed at the vertical center or lower position than the vertical
center of the display DIS. It is characterized by [Selected figure] Figure 1
Multi-channel speaker device
[0001]
The present invention relates to a multi-channel speaker device, and more particularly to a multichannel speaker device that reproduces multi-channel acoustic sound from a plurality of
speakers disposed around a display.
[0002]
For the next generation of multi-channel sound, reproduction of sound from various directions is
an important factor, but to realize this, it is necessary to arrange a large number of speakers in
16-04-2019
1
the room (see, for example, Non-Patent Document 1).
On the other hand, methods for reproducing sound from various directions using head related
transfer functions have been actively researched so far, and the application is highly expected
(for example, see Non-Patent Document 2) . The reproduction method using the head related
transfer function is mainly binaural, that is, the method of reproduction without crosstalk
between both ears using earphones and headphones, but the point that the listening is limited to
one person and the wearing feeling of the headphones are bothersome In order to solve these
problems, a method of using head related transfer functions by speaker reproduction has also
been considered (see, for example, Non-Patent Document 3).
[0003]
Ando, "High Presence Acoustic Technology and Its Theory", IEICE Fundamentals Review, Vol. 3,
No. 4, pp. 33-46, April 2010. Hirahara and 2 others, "Measurements of head related transfer
functions and problems related to binaural reproduction", Hirahara et al., IEICE Fundamentals
Review, vol. 2, no. 4, pp. 68-85, April 2009. Matsui, et al., “Binaural Reproduction of 22.2
Multichannel Sound over Loudspeakers,” Audio Engineering Society 129th Convention Paper
8272, 2010 November.
[0004]
By the way, in recent years, thickness reduction of home use television is progressing, and high
definition and powerful video experiences such as SHV (super high vision) are becoming possible
easily. Along with this, there is a need for sound reproduction that creates highly realistic sound,
but as the television becomes thinner, the speakers attached to the television are also forced to
be thinner and smaller. In general, when the area and capacity can not be secured, the speaker
reproduction sound is limited in both sound quality and volume, and sufficient quality can not be
maintained.
[0005]
Now, in the case of performing highly realistic sound reproduction when watching a television at
home, the use of the head-related transfer function by the above-mentioned speaker
16-04-2019
2
reproduction has high convenience and affinity with the viewing environment. However, in the
case of reproducing the next-generation audio system in which multi-channeling is progressing
in combination with a thin display, it is necessary in the conventional method to integrate (add)
and reproduce a plurality of channel components such as side, rear, upper, etc. Therefore, if the
calculation is simply calculated, the reproduction level increases by about 3 dB (maximum 6 dB)
each time one channel is increased, and there is a problem that the reproduction level is
saturated.
[0006]
Furthermore, since the components of many channels are combined and reproduced from the
same speaker, there is a problem that it is difficult to perceive the intended reproduction
direction due to the difference between the change in acoustic characteristics due to the actual
reproduction space and the sense of direction of the original signal. There was also.
[0007]
Therefore, an object of the present invention made in view of such a point is a multi-channel
speaker capable of highly realistic multi-channel sound system sound reproduction by using a
plurality of speakers arranged around the display using head related transfer functions It is in
providing an apparatus.
[0008]
In order to solve the various problems described above, a multi-channel speaker apparatus
according to the present invention is a signal in front of a channel disposed in front of a viewer
and a signal in a channel disposed at a higher position than the viewer. It corresponds to a multichannel acoustic system that can distinguish between the upper layer signal other than the front
signal and the signal of the channel disposed at the height of the ear of the viewer, and the
middle layer signal other than the front signal, A multi-channel speaker device that uses the
head-related transfer function for upper layer signals other than signals and middle layer signals
other than the front signal, and performs sound reproduction of the multi-channel acoustic
system from a plurality of speakers arranged around the display, An upper layer signal
reproduction speaker for reproducing the upper layer signal other than the front signal, and a
middle layer signal reproduction speaker for reproducing the middle layer signal other than the
front signal The upper layer signal reproduction speaker other than the front signal is disposed
at the upper part of the display, and the middle layer signal reproduction speaker other than the
front signal is disposed at the vertical center of the display or at a lower position than the vertical
center. It is characterized by
16-04-2019
3
[0009]
Further, the multi-channel audio system can distinguish the signal of the left channel of the
viewer from the signal of the right channel for each of the upper layer signals other than the
front signal and the middle layer signals other than the front signal. An upper layer speaker for
reproducing the signal of a channel on the left side of the viewer among the upper layer signals
other than the front signal to the left of the horizontal center of the display as the upper layer
signal reproduction speaker other than the front signal; An upper layer right speaker for
reproducing a signal of a channel on the right side of the viewer among upper layer signals other
than the front signal is provided on the right side from the center, as a middle layer signal
reproduction speaker other than the front signal. For the middle layer left side to reproduce the
signal of the channel on the left side of the viewer among the middle layer signals other than the
front signal. Comprising a chromatography mosquitoes, and middle right speaker for
reproducing the signal of the right channel of the viewer out of the middle signal other than the
forward signal on the right side of the horizontal center, it is preferable.
[0010]
According to the multi-channel speaker device according to the present invention, it is possible to
perform sound reproduction of a highly realistic multi-channel acoustic system by using a
plurality of speakers arranged around the display using the head-related transfer function.
[0011]
It is a figure which shows schematic structure of the multi-channel speaker apparatus which
concerns on one Embodiment of this invention.
It is a figure which shows the 1st example of arrangement | positioning of the upper layer signal
reproduction | regeneration speaker other than a front signal, and the middle layer signal
reproduction | regeneration speaker other than a front signal.
It is a figure which shows the 2nd example of arrangement | positioning of the upper layer signal
reproduction | regeneration speaker other than a front signal, and the middle layer signal
reproduction | regeneration speaker other than a front signal.
It is a figure which shows the 3rd example of arrangement | positioning of the upper layer signal
reproduction | regeneration speaker other than a front signal, and the middle layer signal
16-04-2019
4
reproduction | regeneration speaker other than a front signal.
It is a figure showing the modification of the 3rd example of arrangement of the upper layer
signal reproduction speaker other than a front signal and the middle layer signal reproduction
speaker other than a front signal.
[0012]
Hereinafter, embodiments of the present invention will be described in detail with reference to
the drawings.
Here, in the following description, 22.2 multi-channel sound (hereinafter referred to as 22.2 ch
sound) (for example, refer to Non-Patent Document 1) which is a sound system for SHV as a
multi-channel sound system is taken as an example Although described, it should be noted that
the present invention is not limited to only 22.2 ch sound. According to the present invention,
the position of the front signal of the channel located in front of the viewer, the signal of the
channel located higher than the viewer, and the upper layer signal other than the front signal,
and the height of the viewer's ear Any acoustic system can be supported as long as it is a multichannel acoustic system that can distinguish between the signals of the channels arranged in and
the middle layer signals other than the forward signal.
[0013]
The 22.2ch sound consists of 9ch in the upper layer located higher than the viewer, 10ch in the
middle layer placed at the height of the viewer's ear, and 3ch in the lower layer located lower
than the viewer And 2 ch (0.2 ch) of LFE for bass. Of the 22.2 channels, 3 channels in the upper
layer, 5 channels in the middle layer, 3 channels in the lower layer, and 2 channels in the LFE are
arranged in front of the viewer (on the screen). Among the 9 chs in the upper layer, 6 chs except
for 3 chs in front of the viewer are respectively arranged above (1 ch), side (2 ch) and back (3 ch)
the viewer. Further, among the 10 channels in the middle layer, 5 channels excluding 5 channels
in front of the viewer are respectively disposed on the side (2 channels) and the rear (3 channels)
of the viewer. Note that since the lower 3 channels are all arranged forward, there is no lower
channel on the side and back of the viewer.
16-04-2019
5
[0014]
In the following description, the signals of 11 ch ahead of the viewer and 2 channels of LFE are
"forward signal", 6 ch signals of the upper 9 channels excluding 3 ch ahead of the viewer are
"upper signal" and 5 channels of the middle layer 10 ch ahead of the viewer The five channels of
signals except for the above are referred to as "middle layer signals".
[0015]
FIG. 1 is a view showing a schematic configuration of a multi-channel speaker device according
to an embodiment of the present invention.
The multi-channel speaker device 1 includes a decoder 11, a front signal distributor 12, an upper
signal distributor 13, an upper layer head transfer function convolution means 14, a middle layer
signal distributor 15, and a middle layer head transfer function convolution And a multi-channel
amplifier 17, a front signal reproduction speaker 18, an upper layer signal reproduction speaker
19, and a middle layer signal reproduction speaker 20. The multi-channel speaker device 1
further includes a display (not shown), and the front signal reproduction speaker 18, the upper
layer signal reproduction speaker 19, and the middle layer signal reproduction speaker 20 are
disposed around the display. It is a thing.
[0016]
The decoder 11 decodes the input 22.2 multi-channel audio broadcast signal, and outputs 11 ch
of the viewer front and 2 ch forward signals of LFE to the forward signal distributor 12, and 6
channels excluding the front 3 ch among the upper 9 channels The upper layer signal is output
to the upper layer signal distributor 13, and the middle layer signal of 5 ch excluding the front 5
ch among the middle layer 10 ch is output to the middle layer signal distributor 15.
[0017]
The front signal distributor 12 distributes the front signals of the front 11 ch and the LFE 2 ch in
accordance with the arrangement of the front signal reproduction speaker 18 and outputs the
same to the multi-channel amplifier 17.
[0018]
The upper layer signal distributor 13 distributes the upper layer signal according to the
arrangement of the upper layer signal reproduction speaker 19 and outputs it to the upper layer
16-04-2019
6
head-related transfer function convolution means 14.
[0019]
The upper layer head-related transfer function convolution means 14 performs a convolution
process of a head-related transfer function according to the position of the viewer and the
arrangement of the upper layer signal reproduction speaker 19 on the input upper layer signal.
In the present embodiment, the convolution processing of the head related transfer functions is
not described in detail, but those skilled in the art appropriately select suitable head related
transfer functions as shown in, for example, Non-Patent Documents 2 and 3 and the like. It
should be noted that the convolution process of can be implemented.
Further, as the position of the viewer, a value set in advance or a value acquired dynamically by
remote control operation can be used.
The upper layer head-related transfer function convolution means 14 outputs the upper layer
signal after the convolution process to the multi-channel amplifier 17.
[0020]
The middle layer signal distributor 15 distributes the middle layer signal according to the
arrangement of the middle layer signal reproduction speaker 20 and outputs the middle layer
signal to the middle layer head-related transfer function convolution means 16.
[0021]
The middle layer head-related transfer function convolution means 16 performs a head-related
transfer function convolution process according to the position of the viewer and the
arrangement of the middle-layer signal reproduction speaker 20 on the input middle layer signal.
The middle layer head-related transfer function convolution means 16 outputs the middle layer
16-04-2019
7
signal after the convolution process to the multi-channel amplifier 17.
[0022]
The multi-channel amplifier 17 amplifies the signal of each channel, outputs the front signal to
the front signal reproduction speaker 18, outputs the upper layer signal to the upper layer signal
reproduction speaker 19, and outputs the middle layer signal to the middle layer signal
reproduction speaker 20.
[0023]
The front signal reproduction speaker 18 converts the inputted front signal into sound and
reproduces it.
The front signal reproduction speaker 18 includes a speaker for reproducing 11 ch in front of
the viewer and a speaker for reproducing LFE 2 ch. The front signal reproduction speaker 18 is
disposed at any place around the display except for the place where the upper layer signal
reproduction speaker 19 and the middle layer signal reproduction speaker 20 are disposed.
[0024]
The upper layer signal reproduction speaker 19 converts the input upper layer signal into sound
and reproduces it. The upper layer signal reproduction speaker 19 is disposed at the top of the
display (or higher than the center in the vertical direction). For example, when the display is
rectangular, it is disposed at the upper side of the display (or higher than the center between the
left and right sides) It is
[0025]
The middle layer signal reproduction speaker 20 converts the inputted middle layer signal into
sound and reproduces it. The middle layer signal reproduction speaker 20 is disposed at the
vertical center of the display or at a position lower than the vertical center of the display, for
example, when the display is rectangular, it is disposed at the center of the left and right sides of
the display or It is placed on the lower side.
16-04-2019
8
[0026]
In FIG. 2 to FIG. 5, the arrangement of the upper layer signal reproduction speaker 19 and the
middle layer signal reproduction speaker 20 will be described in detail. Although the illustration
of the front signal reproduction speaker 18 is omitted in FIGS. 2 to 5, as described above, the
front signal reproduction speaker 18 has the upper layer signal reproduction speaker 19 and the
middle layer signal reproduction speaker 20 around the display. Is placed anywhere except
where it is placed. For example, it is also possible to arrange the front signal reproduction
speakers 18 on each side around the display as a speaker array compatible with the WFS (Wave
Field Synthesis) method.
[0027]
FIG. 2 is a view showing a first arrangement example of the upper layer signal reproduction
speaker 19 and the middle layer signal reproduction speaker 20. As shown in FIG. In the first
arrangement example, the upper layer signal reproduction speaker 19 is composed of an upper
layer left speaker 19L and an upper layer right speaker 19R arranged above the display DIS. The
middle layer signal reproduction speaker 20 is configured of a middle layer left speaker 20L
disposed at the center of the left side of the display DIS and a middle layer right speaker 20R
disposed at the center of the right side.
[0028]
In the case of the first arrangement example, the upper layer signal distributor 13 distributes the
upper layer signal so that the signal (6 ch) of each channel is reproduced from the upper layer
left speaker 19L and the upper layer right speaker 19R. The upper layer head-related transfer
function convolution means 14 performs convolution processing of head-related transfer
functions according to the position of the viewer and the arrangement of the upper layer left
speaker 19L and the upper layer right speaker 19R.
[0029]
16-04-2019
9
Further, the middle layer signal distributor 15 distributes the middle layer signal so that the
signals (5 ch) of each channel are reproduced from the middle layer left speaker 20L and the
middle layer right speaker 20R. The middle layer head-related transfer function convolution
means 16 performs a head-related transfer function convolution process according to the
position of the viewer and the arrangement of the middle-layer left speaker 20L and the middlelayer right speaker 20R.
[0030]
Thus, according to the first arrangement example, the upper layer signal reproduction speaker
19 for reproducing the upper layer signal is arranged above the display DIS, and the middle layer
signal reproduction speaker 20 is at the vertical center of the display DIS (each side In the
middle). This enables sound reproduction reflecting the positional relationship between the
upper layer signal and the middle layer signal, and makes it easier for the viewer to perceive the
correct reproduction direction. That is, even in the case of reproducing multi-channel sound
system sounds from a plurality of speakers arranged around the display DIS, reproduction of
highly realistic multi-channel sound reflecting the positional relationship of upper and lower
layer channels is possible. It becomes possible.
[0031]
FIG. 3 is a view showing a second arrangement example of the upper layer signal reproduction
speaker 19 and the middle layer signal reproduction speaker 20. As shown in FIG. In the first
arrangement example, the upper layer signal reproduction speaker 19 and the middle layer
signal reproduction speaker 20 are respectively configured by two speakers, but in the case of a
small speaker which can be arranged on each side of a thin display, a plurality of channel
components are integrated. As a result, the reproduction level of each speaker may be saturated.
The second arrangement example shows an aspect in which signals of channels on the side of the
viewer and signals of channels behind are reproduced by different speakers for each of the upper
layer signal and the middle layer signal in order to prevent the saturation of the reproduction
level. It is.
[0032]
In the second arrangement example, the upper layer signal reproduction speaker 19 includes the
16-04-2019
10
upper layer left side speaker 19LS, the upper layer right side speaker 19RS, and the two upper
layer rear speakers 19B arranged above the display DIS. . Further, the middle layer signal
reproduction speaker 20 is provided below the middle layer left side speaker 20LS disposed at
the center of the left side of the display DIS, the middle layer right side speaker 20RS disposed at
the center of the right side, and below the centers of the left side and the right side. It is
comprised from the arrange | positioned two middle layer rear speakers 20B.
[0033]
In the case of the second arrangement example, the upper layer signal distributor 13 distributes
the signal of the channel on the side of the viewer among the upper layer signals to the upper
layer left side speaker 19LS and the upper layer right side speaker 19RS. The rear channel is
distributed to the upper layer rear speaker 19B. In the upper layer signal distributor 13, the
upper layer left side speaker 19LS, the upper layer right side speaker 19RS, and the two upper
layer rear speakers 19B for the upper (upper) channel signals of the viewer among the upper
layer signals. It shall be distributed to any one or more of The upper layer head-related transfer
function convolution means 14 is adapted to the position of the viewer and the arrangement of
the upper layer signal reproduction speakers 19 (upper layer left side speaker 19LS, upper layer
right side speaker 19RS, and two upper layer rear speakers 19B). Perform convolution
processing of head related transfer functions.
[0034]
Also, the middle layer signal distributor 15 distributes the signal of the channel on the side of the
viewer among the middle layer signals to the middle layer left side speaker 20LS and the middle
layer right side speaker 20RS, and the rear channel of the viewer is middle layer rear It
distributes to the speaker 20B. The middle layer head-related transfer function convolution
means 16 corresponds to the position of the viewer and the arrangement of the middle layer
signal reproduction speaker 20 (the middle layer left side speaker 20LS, the middle layer right
side speaker 20RS, and the two middle layer rear speakers 20B). Perform convolution processing
of head related transfer functions.
[0035]
As described above, in the second arrangement example, for the upper layer signal and the
middle layer signal, the signal of the channel on the side of the viewer and the signal of the
channel on the rear are reproduced by different speakers. It is possible to prevent the saturation
16-04-2019
11
of the reproduction level of each speaker due to
[0036]
FIG. 4 is a view showing a third arrangement example of the upper layer signal reproduction
speaker 19 and the middle layer signal reproduction speaker 20. As shown in FIG.
The third arrangement example shows a mode in which, among the upper layer signal and the
middle layer signal, the signal of the channel on the left side of the viewer and the signal of the
channel on the right side are reproduced by different speakers.
[0037]
In the third arrangement example, the upper layer signal reproduction speaker 19 is provided for
the upper layer left speaker 19LL, the upper layer left speaker 19LR, the upper layer right
speaker 19RL, and the upper layer right speaker disposed on the upper portion (upper side) of
the display DIS. It comprises the right speaker 19RR. Further, the middle layer signal
reproduction speaker 20 is configured of a left speaker 20LL for middle layer left, a right
speaker 20LR for middle layer left, a left speaker 20RL for middle layer right, and a right speaker
20RR for middle layer right disposed on the lower side of the display DIS. .
[0038]
In the case of the third arrangement example, the upper layer signal distributor 13 distributes
the signal of the left channel of the viewer among the upper layer signals to the upper layer left
speaker 19LL and the upper layer right speaker 19LR, and the signal of the right channel It
distributes to upper layer right speaker 19RL and upper layer right speaker 19RR. In the upper
layer signal distributor 13, among the upper layer signals, regarding the signals of channels not
classified in the left-right direction of the viewer, the upper layer left speaker 19LL, the upper
layer right speaker 19LR, the upper layer left speaker 19RL, and the upper layer right It is
appropriately distributed to any one or more of the right speakers 19RR. The upper layer headrelated transfer function convolution means 14 includes the position of the viewer and the upper
layer signal reproduction speaker 19 (upper left speaker 19LL, upper left speaker 19LR, upper
right speaker 19RL, upper right speaker 19RR). Perform convolution processing of head related
16-04-2019
12
transfer functions according to the arrangement.
[0039]
Further, the middle layer signal distributor 15 distributes the signal of the left channel of the
viewer among the middle layer signals to the left speaker 20LL for middle layer left and the right
speaker 20LR for middle layer left, and the signal of the right channel is for the left speaker
20RL for middle layer right And it distributes to the right speaker 20RR for middle class right. In
the middle layer signal distributor 15, among the middle layer signals, for the signals of channels
not classified in the left-right direction of the viewer, the left speaker 20LL for middle layer left,
the right speaker 20LR for middle layer left, the left speaker 20RL for middle layer right, and the
middle layer right It is appropriately distributed to any one or more of the right speakers 20RR.
The middle layer head-related transfer function convolution means 16 includes the position of
the viewer and the middle layer signal reproduction speaker 20 (left speaker 20LL for middle
layer left, right speaker 20LR for middle layer left, left speaker 20RL for middle layer right, and
right speaker 20RR for middle layer right). Perform convolution processing of head related
transfer functions according to the arrangement.
[0040]
Thus, according to the third arrangement example, the upper layer signal reproduction speaker
19 for reproducing the upper layer signal is arranged at the upper portion (upper side) of the
display DIS, and the middle layer signal reproduction speaker 20 is from the vertical center of
the display DIS. It is placed at a low position (lower side). Note that the relative positional
relationship in the vertical direction is the most important factor in the perception of the
reproduction direction of the upper layer signal and the middle layer signal, and the middle layer
signal reproduction speaker 20 does not necessarily have to be disposed at the center of the
display DIS (Similarly (The upper layer signal reproduction speaker 19 does not necessarily have
to be disposed above the display DIS). For this reason, even when reproducing multi-channel
sound system sounds from a plurality of speakers arranged around the display DIS, reproduction
of highly realistic multi-channel sound reflecting the positional relationship between the upper
and middle layer channels Is possible.
[0041]
16-04-2019
13
Furthermore, according to the third arrangement example, the multi-channel speaker device 1
functions as the upper layer signal reproduction speaker 19 to reproduce the signal of the
channel on the left side of the viewer among the upper layer signals on the left side of the
horizontal center of the display DIS. Left speakers (upper left speaker 19LL and upper left
speaker 19LR) and upper right speakers for reproducing the signal of the right channel of the
upper layer signal to the right from the horizontal center (upper left speaker 19RL And an upper
layer right speaker 19RR) and a middle layer signal speaker 20 for reproducing the signal of the
left channel of the viewer among the middle layer signals to the left of the center in the
horizontal direction as the middle layer signal reproduction speaker 20 (middle layer left speaker
20LL And the right speaker 20LR for the middle left, and the viewer among the middle signals to
the right of the horizontal center And a middle right speaker for reproducing the signal of the
right channel (left speaker middle right 20RL and middle right right speaker 20RR). This enables
sound reproduction that reflects the positional relationship between the left and right channels,
and makes it easier for the viewer to perceive the correct reproduction direction. That is, even
when multi-channel sound system sound is reproduced from a plurality of speakers arranged
around the display DIS, more realistic multi-channel sound reproduction is possible reflecting the
positional relationship of the channels in the left and right direction of the viewer. It becomes.
[0042]
Although the present invention has been described based on the drawings and examples, it
should be noted that those skilled in the art can easily make various changes and modifications
based on the present disclosure. Therefore, it should be noted that these variations and
modifications are included in the scope of the present invention. For example, functions included
in each member, each means, etc. can be rearranged so as not to be logically contradictory, and a
plurality of means, etc. can be combined or divided into one.
[0043]
For example, in the third arrangement example, the speaker reproducing the signal of the left
channel of the viewer is arranged on the left side from the horizontal center of the display, and
the speaker reproducing the signal of the right channel is from the horizontal center of the
display It was placed on the right. However, a part of the speaker for reproducing the signal of
the left channel of the viewer is disposed to the right of the horizontal center of the display, and a
part of the speaker for reproducing the signal of the right channel to the left of the horizontal
center of the display It is also possible to arrange. FIG. 5 is a view showing a modification of the
third arrangement example. In the modification shown in FIG. 5, the positions of the upper layer
16-04-2019
14
left speaker 19LR and the upper layer left speaker 19RL and the positions of the middle layer left
speaker 20LR and the middle layer left speaker 20RL are respectively switched as compared with
the third arrangement example. ing.
[0044]
As in the modified example, a part of the speaker that reproduces the signal of the left channel of
the viewer is disposed to the right of the horizontal center of the display, and a part of the
speaker that reproduces the signal of the right channel in the horizontal direction of the display
Even when disposed on the left side from the center, the average position of the entire speaker
reproducing the signal of the left channel of the viewer is arranged on the left side of the
horizontal center, and the average of the entire speaker reproducing the signal on the right
channel of the viewer When the position is arranged to the right of the center in the horizontal
direction, it is possible to reproduce more realistic multi-channel sound reflecting the position of
the channel in the left and right direction of the viewer. Further, in the modification, for each of
the upper layer signal and the middle layer signal, it is possible to widen the intervals of the
speakers that reproduce the left and right signals. Generally, a speaker that reproduces the headrelated transfer function can suppress crosstalk between the left and right ears by widening the
interval, but the listening range (service area) tends to be narrowed. Therefore, by setting the
distance between the loudspeakers appropriately, it becomes possible to set the listening range
according to the viewing mode.
[0045]
In addition, although the display of the multi-channel speaker device has been described as a
rectangle in FIGS. 2 to 5, the display shape to which the present invention can be applied is not
limited to a rectangle.
[0046]
In addition, for multi-channel audio systems other than 22.2 ch audio that use three or more
layers for channels above, to the side, and behind the viewer, more multi-layer signal
reproduction speakers are arranged It is possible to realize more realistic sound reproduction by
doing this.
[0047]
According to the present invention, it becomes possible to reproduce multi-channel sound system
sound from a plurality of speakers arranged around the display, and it is useful that sound
16-04-2019
15
reproduction with higher reality can be realized with a simpler configuration. There is sex.
[0048]
Reference Signs List 1 multi-channel speaker device 11 decoder 12 front signal distributor 13
upper layer signal distributor 14 upper layer head transfer function convolution means 15
middle layer signal distributor 16 middle layer head transfer function convolution means 17
multi-channel amplifier 18 front signal reproduction speaker 19 Upper layer signal reproduction
speaker 19L upper layer left speaker 19LS upper layer left side speaker 19LL upper layer left
speaker 19LR upper layer left speaker 19R upper layer right speaker 19RS upper layer right side
speaker 19RL upper layer right speaker 19RR upper layer right speaker 19B upper layer rear
Speaker 20 Medium Layer Signal Reproduction Speaker 20LS Medium Layer Left Side Speaker
20LL Medium Layer Left Speaker 20LR Medium Layer Left Right Speaker 20R Medium Layer
Right Speaker 20 RS Medium Layer Right Side Speaker 20 RL Medium Layer Right Speaker 20RR
middle right for the right speaker 20B middle rear speaker DIS display
16-04-2019
16
Документ
Категория
Без категории
Просмотров
0
Размер файла
27 Кб
Теги
jp2012238970, description
1/--страниц
Пожаловаться на содержимое документа