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JP2004328662

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DESCRIPTION JP2004328662
The present invention provides a simple stereophonic sound implementation method and the like
that can provide a realistic sense of stereo sound to a large number of listeners while
suppressing the number of speakers. A stereo sound generation system 100 includes a mixing
device 300 connected to a stereo sound source device 200, and a speaker system 400 for stereo
sounding an output after being mixed by the mixing device 300. Each mixer 310 constituting the
mixing device mixes and outputs the R channel output and the L channel output of different
stereo sound sources 210, thereby the R channel output and the L channel output of each stereo
sound source become similar from the speaker 410. It is output. [Selected figure] Figure 1
Simple stereophonic sound implementation method, stereophonic sounding system and tone
generation control system
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
simplified stereophonic sound implementation method, a stereophonic sounding system and a
tone generation control system. 2. Description of the Related Art A widely spread stereo speaker
system is generally composed of left and right speakers installed at a predetermined distance in
front of a listener. The listener watches the stereo sound and the like output from the speakers
from the position where the pair of speakers are viewed from the left and right front respectively.
However, in such a speaker system, the listener can not obtain good stereo sound etc. unless he /
she listens to the pair of speakers looking at the left and right front as described above. In other
words, good stereo sound can not be obtained when the listener moves and approaches one of
the speakers or when the left and right speakers overlap in the same direction. In addition, when
there are many listeners, the listeners are arranged so as to surround the speaker system, but in
this case there is a problem that only a few listeners can listen to good stereo sound etc. is there.
In order to solve such a problem, for example, a speaker system shown in FIG. 9 and FIG. 10 has
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been proposed. The speaker system shown in FIG. 9 includes speakers L1 to L8 which output L
channels of a stereo sound source (not shown) and speakers R1 to R8 which output R channels of
a stereo sound source. They are arranged alternately. The speakers R1 to R8 turn clockwise at an
angle θ (θ = 57 °) connecting a straight line connecting the speakers from the center of the
circle, and the speakers L1 to L8 turn counterclockwise at the same angle θ . And the radiation
angle of the speaker adjacent and adjacent is making 90 degrees. According to such a speaker
system, it is possible to provide a large number of listeners with realistic stereo sound and the
like (see, for example, Patent Document 1). Further, in the speaker system shown in FIG. 10, a
plurality of speakers are radially arranged. An audio output signal of the left channel and an
audio output signal of the right channel are appropriately supplied to the speakers, and audio
and the like corresponding to the signals are output from the speakers. According to this speaker
system, not only it is possible to obtain a correct sound image low order in a predetermined
direction, but for example, it is possible to hear reproduced sound from the direction opposite to
the predetermined direction and listening from the back side of the sound source Such an effect
can be obtained (see, for example, Patent Document 2).
The above speaker system reproduces one sound source, and it is not assumed to reproduce a
plurality of sound sources. Therefore, when it is necessary to reproduce a plurality of sound
sources, such as an ensemble of electronic musical instruments, for example, the plurality of
sound sources are mixed at the front stage of the speaker and reproduced by the abovedescribed speaker system. The speaker system shown in FIG. 11 is an improvement of the
speaker system shown in FIG. 10 so that a plurality of sound sources can be reproduced. This
speaker system is in common with the speaker system shown in FIG. 10 in that each speaker is
disposed in a substantially circular shape at the center of a large number of listeners, but differs
in that stereo sound etc. can be provided to the listeners. Do. More specifically, the speaker
system includes the first speaker SP1 to the tenth speaker SP10, and two (one pair) of the
speakers SP are arranged in various directions. Each speaker is connected to the corresponding
stereo sound source, and the first speaker SP1 is connected to the L channel of the first stereo
sound source, while the second speaker SP2 is connected to the R channel of the first stereo
sound source. The third speaker SP3 is connected to the L channel of the second stereo sound
source, while the fourth speaker SP4 is connected to the R channel of the second stereo sound
source, ..., and the tenth speaker is connected to the R channel of the fifth sound source ing.
According to the speaker system of FIG. 11, since a pair of speakers SP arranged in various
directions are respectively connected to the L channel and R channel of the corresponding stereo
sound source, a large number of listeners can be heard. It is possible to provide realistic stereo
sound and the like. [Patent Document 1] Japanese Patent Application Laid-Open No. 2001211495 (Page 2, FIG. 1 and FIG. 2) [Patent Document 2] Japanese Patent Application Laid-Open
No. 9-271095 (Page 2, Page 3, First Item) However, in the method of mixing and reproducing the
sound source at the front stage of the speaker, the intelligibility of each sound source is
deteriorated, and the above-mentioned FIG. In the illustrated speaker system, since it is necessary
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to arrange two speakers in each direction, a large number of speakers are required, and there is a
problem that the manufacturing cost is increased. Furthermore, since it is necessary to
accommodate a large number of speakers in the housing, the housing becomes large, which is
inconvenient to carry around.
The present invention has been made in view of the above-described circumstances, and it is a
simplified stereophonic sound generation that can provide realistic sound and the like to a large
number of listeners while suppressing the number of speakers. It aims at providing a realization
method and a stereo sounding system. SUMMARY OF THE INVENTION In order to solve the
problems described above, the present invention uses a plurality of stereo sound sources and a
number of speakers smaller than twice the number of stereo sound sources. A method of
realizing the method, the mixing process of arranging the respective speakers, and mixing and
outputting the R channel output and the L channel output of different stereo sound sources to at
least one or more of the arranged speakers. And are provided. According to this configuration,
after arranging the plurality of speakers at substantially constant intervals or the like, the R
channel output and L channel output of different stereo sound sources are mixed and output to
at least one or more speakers. . Here, conventionally, in order to realize stereo sounding, it has
been necessary to prepare speakers twice as many as the number of stereo sound sources, but
the number of speakers necessary for the stereo sounding can be increased by configuring as
described above. It is possible to reduce. For example, in the case of realizing stereo sounding
using two stereo sound sources, conventionally, a total of four speakers (two L channel speakers
and two R channel speakers) have been required. By mixing and outputting the R channel output
and L channel output of different sound sources to at least one speaker like this, the speaker
functions as the R channel speaker of one sound source and the L channel speaker of the other
sound source. Therefore, the number of required speakers can be reduced. Further, the present
invention is a method of realizing stereo sounding using a plurality of stereo sound sources and a
number of speakers smaller than twice the number of stereo sound sources, and an arrangement
process of arranging each speaker; A mixing output process for mixing and outputting R-channel
output and L-channel output of different stereo sound sources to at least two or more speakers of
the arranged speakers; in the mixing output process, each stereo sound source Mixing is
performed such that the R channel output and the L channel output are output from the adjacent
speakers. According to this configuration, for example, as shown in FIG. 3, after arranging the
plurality of speakers at substantially constant intervals on the substantially straight line, at least
two or more speakers (the second speakers in FIG. 3) are arranged. And the third speaker) by
mixing the R channel output and the L channel output of different stereo sound sources.
At the time of this mixing, mixing is performed so that the R channel output and L channel output
of each stereo sound source are output from the adjacent speakers. Taking FIG. 3 as an example,
the R channel output of the second stereo sound source is output from the second speaker, and
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the L channel output of the second stereo sound source is output from the third speaker. Here,
while the second speaker has both the role of the R channel speaker of the second stereo sound
source and the role of the L channel speaker of the first stereo sound source, the third speaker
has the role of the L channel speaker of the second stereo sound source and Also serves as the R
channel speaker of the third stereo sound source. As a result, it is possible to reduce the number
of speakers required for stereo sounding as described above. Further, the present invention is a
method of realizing stereo sounding using a plurality of stereo sound sources and the same
number of loudspeakers, wherein an arrangement process of arranging the respective speakers
in a substantially circular shape, and for each arranged speaker Mixing the R channel output and
L channel output of different stereo sound sources and outputting the mixed output process, in
the mixing output process, the R channel output and L channel output of each stereo sound
source become equal It is characterized by performing mixing so that it may be outputted from a
speaker. According to such a configuration, for example, as shown in FIG. 1, after arranging a
plurality of speakers in a substantially circular shape at substantially constant intervals, the
speakers (the first to fifth speakers in FIG. 1) are arranged. On the other hand, the R channel
output and L channel output of different stereo sound sources are mixed and output. At the time
of this mixing, mixing is performed such that the R channel output and L channel output of each
stereo sound source are output from the adjacent speakers. Referring to FIG. 1 as an example, the
R channel output of the first stereo sound source is output from the first speaker, while the L
channel output of the first stereo sound source is output from the fifth speaker adjacent to the
first speaker. Similarly, the R channel output of the second stereo sound source is output from
the second speaker, while the L channel output of the second stereo sound source is output from
the first speaker, ... the R channel of the fifth stereo sound source The output is output from the
fifth speaker, while the L channel output of the fifth stereo sound source is output from the
fourth speaker. Here, each of the speakers doubles as an L channel speaker of one of two
different stereo sound sources and an R channel speaker of the other stereo sound source.
As a result, it is possible to reduce the number of speakers required for stereo sounding as
described above. The present invention also provides a stereo sounding system comprising a
plurality of stereo sound sources and the same number of speakers, and a mixing device for
mixing the R channel output and L channel output of different stereo sound sources and
outputting the mixed sound to each speaker The speakers are arranged in a substantially circular
shape, and the mixing device performs the mixing such that the R channel output and the L
channel output of the stereo sound sources are output from the speakers that meet each other. I
assume. Further, the present invention is a stereo sounding system comprising: first to nth stereo
sound sources, n to 1st to nth mixing means, and 1st to nth speakers, wherein n is a natural
number of 2 or more. The 1st to nth loudspeakers are arranged in a substantially circular shape
in the order of 1 to n, and k is a natural number of 1 or more and (n-1) or less. The L channel
output of the (k + 1) th stereo sound source is mixed and output to the k th speaker, and the n th
mixing means mixes the R channel output of the n th stereo sound source and the L channel
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output of the first stereo sound source It is characterized by outputting to the n-th speaker.
Further, the present invention can be carried by an operator, comprising: generation means for
detecting the movement of the operation terminal generated by the operation of the operator to
generate movement information; and transmission means for transmitting the movement
information Tone generation control comprising: a remote control terminal; receiving means for
receiving the movement information; and a stereo sounding system for generating stereo sound
based on the movement information received by the reception means A system, wherein the
stereo sound generation system mixes a plurality of stereo sound sources, the same number of
speakers as the stereo sound sources, and R channel output and L channel output of different
stereo sound sources and outputs the mixed sound to each speaker And each of the speakers is
arranged in a substantially circular shape, and the mixing device is provided with an R channel of
each of the stereo sound sources. The mixing is performed such that the output and the L
channel output are output from the adjacent speakers. Further, the present invention is a method
of realizing stereo sounding by connecting three or more speakers to the L channel or R channel
of one stereo sound source, and arranging the speakers at substantially constant intervals. And a
connection process of connecting the speakers such that the channels connected to the stereo
sound source are different between the adjacent speakers.
According to this configuration, when three or more speakers are connected to either the L
channel or the R channel of one stereo sound source to realize stereo sounding, the speakers are
arranged at substantially constant intervals. In order to connect the speakers such that the
channels connected to the stereo sound source are different between adjacent speakers, the
listeners placed between the speakers (see points P1 to P6 in FIG. 8) It becomes possible to listen
to stereo sound generation by a pair of speakers located in front of the speaker. Here,
conventionally, a pair of speakers consisting of an L channel speaker and an R channel speaker is
required for each direction of the listener (see FIG. 10), but according to the above configuration,
the number of required speakers is It is possible to reduce. Here, in the arrangement process, it is
desirable to arrange the speakers at substantially constant intervals along the movement path of
the listener. Further, the present invention is a method for realizing stereo sounding by
connecting 2n (n ≧ 2) or more speakers to the L channel or R channel of one stereo sound
source, wherein each speaker is substantially It is characterized in comprising the steps of:
arranging in a substantially circular shape at regular intervals; and connecting the speakers so
that channels connected to the stereo sound source are different between the adjacent speakers.
BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments according to the
present invention will be described. 【0027】 A. 1. Present Embodiment FIG. 1 is a
conceptual view of a stereo sound generation system 100 according to the present embodiment,
and FIG. 2 is a view showing a configuration of the stereo sound generation system 100. As
shown in FIG. As shown in FIG. 2, the stereo sound generation system 100 includes a mixing
device 300 connected to the stereo sound source device 200, and a speaker system 400 for
stereo sounding the output after being mixed by the mixing device 300. The stereo sound source
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device 200, the mixing device 300, and the speaker system 400 are respectively configured by
first to fifth stereo sound sources 210, first to fifth mixers 310, and first to fifth speakers 410. As
described above, in the stereo sound generation system 100 according to the present
embodiment, the same number of stereo sound sources, mixers and speakers are provided. As
shown in FIG. 1, the first to fifth speakers 410 are arranged substantially circularly in a
counterclockwise direction in the order of 1 to 5, and the speakers 410 are connected to the
corresponding first to fifth mixers 310 respectively. ing.
In addition, the speaker system comprised by the 1st-5th speaker is accommodated in the
housing | casing. Although FIG. 1 shows the case where the stereo sound sources 210 and the
mixers 310 are installed outside the housing, they may be installed in the housing. The first
mixer 310 is connected to the R channel of the first stereo sound source 210 and the L channel
of the second stereo sound source 210, and the R channel output of the first stereo sound source
210 (denoted as sound source 1R in FIG. 1; Similarly, the L channel output (sound source 2L) of
the second stereo sound source 210 is mixed and output to the first speaker 410. That is, the
first speaker 410 doubles as an R channel speaker of the first stereo sound source 210 and an L
channel speaker of the second stereo sound source 210. The second mixer 310 is connected to
the R channel of the second stereo sound source 210 and the L channel of the third stereo sound
source 210, and the R channel output (sound source 2 R) of the second stereo sound source 210
and the third stereo sound source 210. And the L channel output (sound source 3L) of FIG. That
is, the second speaker 410 doubles as an R channel speaker of the second stereo sound source
210 and an L channel speaker of the third stereo sound source 210. Also in the third to fifth
mixers 310, connections similar to those of the second mixer 310 and the like described above
are made (see FIG. 1). As a result, the third speaker 410 doubles as an R channel speaker of the
third stereo sound source 210 and an L channel speaker of the fourth stereo sound source 210,
and the fourth speaker 410 is an R channel speaker of the fourth stereo sound source 210. And
the L channel speaker of the fifth stereo sound source 210, and the fifth speaker 410 doubles as
the R channel speaker of the fifth stereo sound source 210 and the L channel speaker of the first
stereo sound source 210. The listener 1 listens to the sound source 1 L from the fifth speaker
410 diagonally left forward and the sound source 1 R from the first speaker 410 diagonally right
forward when viewed from his / her own, and the stereo according to the first stereo sound
source 210 Listen to the pronunciation. Here, as described above, the first speaker 410 also
outputs the sound source 2L in addition to the sound source 1R. Therefore, the listener 2 located
to the right of the listener 1 listens to the sound source 2L from the first speaker 410 and the
sound source 2R from the second speaker 410 diagonally forward to the right, and relates to the
second stereo sound source 210. You will hear stereo sound.
Similarly, the listener 3 listens to the sound source 3 L from the second speaker 410 diagonally
left forward and the sound source 3 R from the third speaker 410 as seen from the self, and
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generates stereo sound according to the third stereo sound source 210. The listener 5 listens to
the sound source 5L from the fourth speaker 410 at the left front and the sound source 5R from
the fifth speaker 410 at the front right when viewed from the self, and the fifth stereo It will
listen to the stereo pronunciation concerning the sound source 210. As described above, in the
stereo sound generation system 100 according to the present embodiment, one speaker
functions as an L channel speaker and an R channel speaker of different stereo sound sources.
And each mixer mixes so that L channel output and R channel output of each stereo sound
source may become an output from the respectively adjacent speaker. Therefore, each listener
can listen to stereo sounding with a pair of speakers (for example, in the case of the listener 1,
the first speaker and the fifth speaker) positioned diagonally forward as viewed from the user. As
is apparent from the above description, according to the stereo sound generation system
according to the present embodiment, it is possible to provide a stereo sound etc. with a sense of
presence to a large number of listeners while suppressing the number of speakers. It becomes. As
described above, since stereo sound etc. can be provided by a smaller number of speakers than in
the past, as a result it is possible to reduce the cost involved in the production of a stereo sound
generation system etc. It is possible to reduce the size and weight of the In the present
embodiment described above, in order to facilitate understanding of the description, five stereo
sound sources 210, five mixers 310, and five speakers 410 are made in accordance with the
description of the prior art described above and the like. Although the case where a stereo sound
generation system was built by was explained by this, this invention is not the meaning limited to
this. That is, the present invention is similarly applicable to the case where a stereo sound
generation system is configured by a plurality of first to n-th stereo sound sources, a mixer, and
speakers. Specifically, as in the present embodiment, the speakers are arranged in a substantially
circular shape in the first to n-th order, and the first mixer is configured to output the R channel
of the first stereo sound source and the second stereo sound source. The L channel output is
mixed and output to the first speaker. Similarly, the second mixer mixes the R channel output of
the second stereo sound source with the L channel output of the third stereo sound source and
outputs the mixed signal to the second speaker,... The channel output and the L channel output of
the first stereo sound source are mixed and output to the n-th speaker.
This enables each listener to listen to stereo sound generation through a pair of speakers located
in front of him / her. 【0038】 B. Modifications Although the embodiment of the present
invention has been described above, the above embodiment is merely an example, and various
modifications can be added to the above embodiment without departing from the spirit of the
present invention. As a modification, for example, the following can be considered. Modified
Example 1 In the above-described embodiment, the case where the plurality of speakers are
arranged in a substantially circular shape has been described. However, for example, they may be
arranged in a substantially linear shape. FIG. 3 is a view showing the configuration of a stereo
sound generation system 10 according to the first modification. The stereo sound generation
system 10 includes a mixing device 30 connected to a stereo sound source device 20 consisting
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of first to third stereo sound sources 21 and a speaker system 40. The mixing device 30 is
configured by a first mixer 31 and a second mixer 31, and the speaker system 40 is configured
by first to fourth speakers 41. The first mixer 31 is connected to the L channel of the first stereo
sound source 21 and the R channel of the second stereo sound source 21, and the L channel
output (sound source 1 L) of the first stereo sound source 21 and the second stereo sound source
210. And the R channel output (sound source 2R) of the above are mixed and output to the
second speaker 41. As a result, the second speaker 41 doubles as an L channel speaker of the
first stereo sound source 21 and an R channel speaker of the second stereo sound source 21. The
second mixer 31 is connected to the L channel of the second stereo sound source 21 and the R
channel of the third stereo sound source 21, and the L channel output (sound source 2 L) of the
second stereo sound source 21 and the third stereo sound source 21. And the R channel output
(sound source 3R) of FIG. As a result, the third speaker 41 doubles as an L channel speaker of the
second stereo sound source 21 and an R channel speaker of the third stereo sound source 21. On
the other hand, the R channel output (sound source 1 R) of the first stereo sound source 21 is
directly output to the first speaker 21 without being mixed, while the L channel output (sound
source 3 L) of the third stereo sound source 21 is , And is output directly to the fourth speaker
21 without being mixed. As a result, the first speaker 41 becomes an R channel speaker of the
first stereo sound source 21 alone, and the fourth speaker 41 becomes an L channel speaker of
the third stereo sound source 21 alone.
Here, the listener 1 shown in FIG. 3 listens to the sound source 1 L from the second speaker 41
diagonally left forward and the sound source 1 R from the first speaker 41 diagonally forward
right as viewed from the user. (1) Listen to stereo sound in accordance with the stereo sound
source 21. Similarly, the listener 2 located to the left of the listener 1 listens to the sound source
2L from the third speaker 41 diagonally left forward and the sound source 2R from the second
speaker 41 diagonally right forward as viewed from the user. Listening to the stereo sound
generation according to the second stereo sound source 21, the listener 3 listens to his own, the
sound source 3L from the fourth speaker 41 diagonally left forward and the sound source 3R
from the third speaker 41 diagonally right forward Listen and listen to the stereo sound related
to the third stereo sound source 21. As described above, also in the stereo sound generation
system according to the present modification, the number of speakers can be reduced as
compared with the conventional case. That is, conventionally, in order to realize stereo sounding,
two speakers are required for each stereo sound source, so it was necessary to prepare twice as
many speakers as the number of stereo sound sources to be reproduced (see FIG. 11), in the
present modification, it is possible to realize the sound generation of a plurality of stereo sound
sources with a number of speakers at least smaller than twice the number of stereo sound
sources. In this modification, although the aspect using three stereo sound sources 21 has been
described, the present invention is applicable to all aspects realizing stereo sounding using a
plurality (two or more) of stereo sound sources 31. is there. In addition, about these various
aspects, since it can be demonstrated similarly to the above, description is omitted. <Modification
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2> FIG. 4 is a view for explaining a tone generation control system according to modification 2.
As shown in FIG. The tone generation control system 500 is a system operated in a music
classroom, a school, a house, a hall or the like, and the tone generation device 600 and a plurality
of operations for each user to produce a tone generation by the tone generation device 600. A
terminal 800-N (N ≧ 1; however, in the present modification, N = 5 is assumed). In the tone
generation control system 500 according to the present modification, the stereo sound
generation system according to the present embodiment is employed. The detailed configuration
of such a tone generation control system will be described below. <Functional Configuration of
Tone Generation Control System 500> FIG. 5 is a diagram showing a functional configuration of
the tone generation control system 500 constructed in one music classroom or the like.
In the following description, operation terminals 800-1 to 800-N are simply referred to as
operation terminals 800 when it is not necessary to distinguish them in particular. The operation
terminal 800 is a terminal that can be carried by the operator, such as being held by the hand of
the operator or attached to a part of the body. The motion sensor MS is a sensor that detects
motion based on the motion of the operator carrying the operation terminal 800, generates
motion information, and sequentially outputs the motion information to the wireless
communication unit 80. As the motion sensor MS, a known three-dimensional acceleration
sensor, a three-dimensional velocity sensor, a two-dimensional acceleration sensor, a twodimensional velocity sensor, a strain detector, or the like is used. The wireless communication
unit 80 plays a role of performing wireless data communication with the musical tone generating
device 600. When wireless communication unit 80 receives exercise information corresponding
to the movement of the operator from motion sensor MS, terminal identification ID for
identifying operation terminal 800 in the exercise information (for example, T for operation
terminal 800-1 And wirelessly transmit the same to the tone generator 600. The tone generator
600 is a substantially cylindrical device that generates a tone and the like based on motion
information transmitted from each operation terminal 800 (see FIG. 6). Referring back to FIG. 5,
the antenna system AS is configured by a plurality of antennas AT-1 to AT-n and the like that
receive the motion information transmitted from the operation terminal 800. The respective
antennas AT-1 to AT-n are radially provided inside the case of the tone generator 600. The
antenna system AS having such a configuration identifies the antenna having the highest
reception level by comparing the reception levels detected by the respective antennas AT-1 to
AT-n, and antenna identification information for identifying the specified antenna (For example,
in the case of the antenna AT1, A-ID1 or the like) is sent to the speaker selection unit 64. The
wireless communication unit 61 receives the motion information transmitted from the operation
terminal 800 via the antenna system AS, and outputs the received motion information to the
information analysis unit 62. The information analysis unit 62 performs predetermined analysis
processing described later on the motion information supplied from the wireless communication
unit 61, and outputs the analysis result to the performance parameter determination unit 63. The
performance parameter determination unit 63 determines performance parameters of a musical
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tone, for example, parameters such as a volume of a musical tone and a reverb according to the
analysis result of motion information supplied from the information analysis unit 62. When the
stereo sound generation system 100 receives music data (MIDI (Musical Instrument Digital
Interface) data, etc.) based on the performance parameters determined by the performance
parameter determination unit 63, it generates a musical tone signal based on the music data. ,
Pronounce this as stereo sound etc.
The stereo sound production system 100 includes a mixing device 300, a speaker system 400,
and the like connected to the stereo sound source device 200, as in the stereo sound production
system 100 according to the present embodiment. The speaker selection unit 64 selects one or a
plurality of pairs of speakers (hereinafter referred to as “one or more pairs”) to be used for
stereo sounding among a plurality of speakers constituting the speaker system 400 based on
antenna identification information sent from the antenna system AS. Choose a speaker pair).
Specifically, the speaker selecting unit 64 first specifies the position direction of the operator
from the antenna identification information sent from the antenna system AS. Then, the speaker
selecting unit 64 selects a speaker pair to be used for stereo sounding from among a plurality of
speakers constituting the speaker system 400 in order to emit stereo sound or the like in the
position direction thus specified. The functions related to the operation terminal 800 and the
tone generation device 600 described above are realized by the cooperation of the software
installed in the operation terminal 800 and the tone generation device 600 and hardware
resources. In the above, only the parts that are considered necessary for the understanding of the
present invention will be described, and the description of the other parts will be omitted.
Hereinafter, motion information analysis processing, performance parameter determination
processing, tone generation processing, and speaker selection processing (these are collectively
referred to as tone generation control processing) when a three-dimensional acceleration sensor
is used as the motion sensor MS are shown in FIG. -It demonstrates with reference to FIG. In the
following description, it is assumed that five operators play a musical piece using their own
operation terminal 800 (see FIG. 6). <Musical Tone Generation Control Process> First, the
operator operates a switch (not shown) or the like of the musical tone generation device 600 to
select a music piece to be played in a ensemble, set a part for which the player is in charge, and
the like. For example, the operator 1 takes charge of the first instrument part (piano part etc.),
and the operator 2 takes charge of the second instrument part (flute part etc.). The setting is
made such that the operator 5 takes charge of the fifth musical instrument part (trumpet part
etc.). When such setting is made, a part management table relating to the selected music is
registered in the memory (not shown) of the tone generation device 600. In this part
management table, a terminal identification ID (for example, T-ID 1 or the like for the operator
terminal 800-1) for identifying the operation terminal of each operator and a musical instrument
for which each operator is in charge A part ID (for example, P-ID 1 or the like) for identifying a
part is registered in association with each other.
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In the state where such setting is made, when each operator operates the operation terminal 800
in which the operation sensor MS is incorporated with his hand, motion information
corresponding to the operation direction and the operation force is transmitted from the
operation terminal 800. It is transmitted to the tone generator 600. Specifically, as shown in FIG.
7, the acceleration αx (x is the x direction) from the x axis detection unit SX, the y axis detection
unit SY and the z axis detection unit SZ of the motion sensor MS in each operation terminal 800.
A signal Mx, My, Mz representing an acceleration αy (y is a subscript) in the y (left and right)
direction and an acceleration αz (z is a subscript) in the z (back and forth) direction is outputted.
The terminal identification ID is added to each of Mz, and the signals Mx, My, Mz to which the
terminal identification ID is added are wirelessly transmitted to the tone generator 600 as motion
information. When the antenna system AS of the tone generator 600 receives motion information
with a terminal identification ID added from the operation terminal 800, the antenna system AS
compares the reception levels detected by the respective antennas AT-1 to AT-n and receives
them. The antenna AT having the highest level is identified, and antenna identification
information for identifying the identified antenna AT is generated and output to the speaker
selection unit 64, while the exercise information is sent to the wireless communication unit 61.
The wireless communication unit 61 outputs the motion information received via the antenna
system AS to the information analysis unit 62 as acceleration data αx, αy, αz. When receiving
the antenna identification information from the antenna system AS, the speaker selection unit 64
specifies the position direction of the operator from the antenna identification information. Then,
the speaker selection unit 26 selects a speaker pair to be used for stereo sounding from among a
plurality of speakers constituting the speaker system 100 in order to emit stereo sound or the
like in the specified position direction. For example, when each operator is arranged at a position
as shown in FIG. 6, the speaker selection unit 64 specifies the position of each operator based on
antenna identification information etc. and selects a speaker pair. . Specifically, the first speaker
SP1 and the fifth speaker SP5 are selected so that the stereo sound or the like of the first musical
instrument part operated by the operator 1 is emitted from the fifth speaker SP5 and the first
speaker SP1. . Similarly, the speaker selection unit 26 causes the first speaker SP2 and the
second speaker SP2 to emit the stereo sound of the second musical instrument part operated by
the operator 2 from the first speaker SP1 and the second speaker SP2. The fourth speaker SP4
and the fifth speaker SP5 are selected so that the stereo sound etc. of the fifth instrument part
operated by the operator 5 is emitted from the fourth speaker and the fifth speaker. Do.
When the speaker selection unit 64 selects the speaker pair in this manner, the speaker selection
unit 64 notifies the stereo sound generation system 100 of this content. On the other hand, when
receiving each axis acceleration data from the wireless communication section 61, the
information analysis section 62 analyzes each axis acceleration data to obtain the absolute value
| α | of the acceleration represented by the following equation (1). . | Α | = (αx <2> + αy <2> +
αz <2>) <1/2> (1) Next, the information analysis unit 62 determines the accelerations αx and
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αy, the accelerations αz and Compare As a result of comparison, for example, when the zdirection acceleration αz is larger than the x and y-direction accelerations αx and αy, it is
determined that the “pushing operation” is performed to hit the operation terminal 800.
Conversely, when the z-direction acceleration αz is smaller than the x and y-direction
accelerations αx and αy, it is determined that the air is cut by the operation terminal 800 and
the “cut operation” is performed. In this case, the values of the x and y direction accelerations
αx and αy are further compared with each other, and for example, when the x direction
acceleration αx is larger than the y direction acceleration αy, the direction of the “cutting
operation” is “vertical” (x) I will judge. On the other hand, when the x-direction acceleration
αx is smaller than the y-direction acceleration αy, it is determined that the direction of the
“cutting operation” is “horizontal” (y) (these are merely examples). After analyzing the
operation content of the operation terminal 800 in this manner, the information analysis unit 62
notifies the performance parameter determination unit 63 of the analysis result. The
performance parameter determination unit 63 determines various performance parameters for
the music data based on the determination result of the analysis processing by the information
analysis unit 62. For example, the volume of the performance data is controlled according to the
magnitude of the acceleration absolute value | α | or the component indicating the maximum
among the directional components αx, αy, and αz. The performance parameter determination
unit 63 controls other parameters as follows based on the determination result. For example, the
depth of reverberation (reverberation) is controlled in accordance with the cycle of “vertical (x
direction) cutting operation”. Apart from this, if it is determined that the "warm cut action" is a
small action quickly, an articulation such as an accent is given, and it is determined that the
"warm cut action" is a large action slowly Lower the pitch (pitch) (these controls are just an
example). When the performance parameter is determined in the performance parameter
determination unit 63, music data reflecting the determined performance parameter is output to
the stereo sound generation system 100.
The stereo sound generation system 100 generates a musical tone signal by the stereo sound
source device 200 (see FIG. 5) based on the music data supplied from the performance
parameter determination unit 63, and the generated musical tone signal is transmitted to the
speaker system 400 via the mixing device 300. Output to As described above, the speaker
selection unit 64 selects the speaker pair from which the stereo sound or the like should be
emitted. Therefore, in the mixing apparatus 300, the mixing operation is performed such that
stereo sound or the like of the musical instrument part that each operator takes charge of is
emitted through the speaker pair selected by the speaker selection unit 64. For example, the
stereo sound of the first musical instrument part is generated by the first stereo sound source
210 (see FIG. 6), and the stereo sound of the second musical instrument part is generated by the
second stereo sound source 210, for example. ... When the stereo sound of the fifth musical
instrument part is generated by the fifth stereo sound source, the mixing device 300 outputs the
R channel output (sound source 1R) of the first stereo sound source 210 and the L channel
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output of the second stereo sound source 210 (Sound source 2L) is mixed and output to the first
speaker SP1. Further, the mixing device 300 mixes the R channel output (sound source 2R) of the
second stereo sound source 210 and the L channel output (sound source 3L) of the third stereo
sound source 210, and outputs the mixed signal to the second speaker SP2. The R channel
output (sound source 5R) of the fifth stereo sound source 210 and the 1L output (sound source
1L) of the first stereo sound source 210 are mixed and output to the fifth speaker SP5. As a
result, the operator 1 listens to the sound source 1 L from the fifth speaker SP 5 diagonally left
forward and the sound source 1 R from the first speaker SP 1 diagonally right forward as viewed
from the operator 1 Listen to such stereophonic pronunciation. Similarly, the operator 2 located
to the right of the operator 1 listens to the sound source 2L from the first speaker SP1 diagonally
left front and the sound source 2R from the second speaker SP2 diagonally right front as viewed
from the operator 1 Listening to the stereo sound according to the second musical instrument
part, ... the operator 5 located on the right of the operator 4 is the fourth speaker SP4 in the left
diagonal front and the fifth speaker in the right diagonal Listening to the sound source 5R from
SP5 and listening to the stereo pronunciation relating to the fifth instrument part. In this manner,
stereo sounds and the like of the instrument parts that each operator takes charge of are emitted
from the speaker pairs located in front of each operator. Therefore, each operator can perform
ensemble while well listening to the stereo sound etc. of the instrument part that he / she is in
charge of.
As described above, according to the tone generation control system of this modification, tone
generation and the like reflecting the movement of the operator carrying the operation terminal
800 is performed, and the position direction of the operator is detected. Each operator listens
well to the musical tone of the musical instrument part on which the operation content is
reflected, in order to cause the musical tone of the musical instrument part which the operator
takes charge of using the speaker pair facing the position direction of the operator. Can be
played together. Here, in the present modification, the case where the musical tone controlled by
the performance terminal 800 is generated and the generated musical tone is emitted from the
speaker has been described, but the musical tone emitted from the speaker is generated by the
control of the performance terminal 800. Not only the musical tones to be played, but also
musical tones generated by performance of an actual musical instrument (keyboard, guitar, etc.)
may be used. The same applies to the above-described embodiment and each modified example,
regardless of the type of musical tone emitted from each speaker. <Modification 3> In the abovedescribed embodiment, the stereo sound generation system is constructed using a plurality of
stereo sound sources, mixers, and speakers. However, one stereo sound source and a plurality of
speakers are used. Is also applicable to the construction of a stereo sound generation system. FIG.
8 is a view showing the configuration of a stereo sound generation system 100 'according to the
third modification. The stereo sound generation system 100 'is configured of one stereo sound
source SS, six speakers SP, and the like. Six speakers SP are arranged in a substantially circular
shape at substantially constant intervals, of which three speakers SP are connected to the L
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channel of the stereo sound source SS, and the remaining three speakers SP are used as the R
channel of the stereo sound source SS It is connected. In FIG. 8 and the following description, for
convenience of explanation, the three speakers SP connected to the L channel of the stereo sound
source SS are appropriately referred to as speakers SP-L1 to L3 and are connected to the R
channel of the stereo sound source SS. The three loudspeakers SP are appropriately referred to
as loudspeakers SP-R1 to R3. As shown in the figure, the six speakers SP are arranged so as to be
different between the speakers SP and the channels connected to the stereo sound source SS.
Specifically, the speaker SP-R1 is disposed at a fixed interval next to the speaker SP-L1
(counterclockwise direction), and at a right interval to the right of the speaker SP-R1. The
speaker SP-L2 is disposed,..., And the speaker SP-R3 is disposed at a predetermined interval next
to the speaker SP-L3.
By arranging six speakers in this manner along the path of movement of the listener at
substantially constant intervals, the listener can see the speaker at the front left diagonally from
his own point at point P 1 shown in FIG. It becomes possible to listen to the L-channel output
from the SP-L 1 and the R-channel output from the speaker SP-R 1 diagonally forward to the
right and to listen to stereo sound generation relating to the stereo sound source SS. After that,
when moving to the point P2 shown in FIG. 8, the listener sees from this point P2, the R channel
output from the speaker SP-R1 diagonally forward left and the L channel from the speaker SP-L2
diagonally forward right Listening to the output and listening to the stereo sound related to the
stereo sound source SS. Similarly, when moving to the point P3 shown in FIG. 8, the listener sees
from his own view, the L channel from the speaker SP-L2 diagonally left forward and the R
channel output from the speaker SP-R2 diagonally forward right Listening to the stereo sounding
related to the stereo sound source SS, and moving to the point P6 shown in FIG. 7, the listener
sees from him and R channel and the right from the speaker SP-R3 diagonally left forward
Listening to the L channel output from the speaker SP-L1 diagonally forward and listening to the
stereo sounding relating to the stereo sound source SS. As described above, even when a stereo
sound generation system is constructed using one stereo sound source and a plurality of
speakers, the same effect as that of the present embodiment, that is, the number of speakers to
be installed in comparison with the prior art. The effect of being able to reduce can be obtained.
That is, in the prior art, it was necessary to install a pair of speakers consisting of an L channel
speaker and an R channel speaker for each listening direction of the listener. In contrast to the
need for six loudspeakers (6 for L channel and 6 for R channel), in the present modification,
stereo pronunciation can be provided to the listener by five loudspeakers. In the present
modification, the case where six speakers are used has been described, but the present invention
is also applicable to the case where 2n (n ≧ 2) or more speakers are used. Moreover, in this
modification, although the case where several speakers were arrange | positioned in substantially
circle shape was demonstrated, you may arrange | position these speakers on a substantially
straight line similarly to the modification 1 mentioned above. When a plurality of speakers are
arranged on a substantially straight line as described above, the same effect as that of this
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modification can be obtained by using at least three or more speakers.
That is, a method of realizing stereo sounding by connecting three or more speakers to the L
channel or R channel of one stereo sound source, and arranging the speakers at substantially
constant intervals A simple stereophonic sound may be realized by a method including the steps
of connecting the speakers such that the channels connected to the stereo sound source differ
among the speakers. As described above, according to the present invention, it is possible to
provide a stereo sound or the like with a sense of presence to a large number of listeners while
suppressing the number of speakers. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a
conceptual view of a stereo sound generation system in the present embodiment. FIG. 2 is a view
showing the configuration of a stereo sound generation system according to the embodiment;
FIG. 3 is a view showing the configuration of a stereo sound generation system according to a
first modification; FIG. 4 is a diagram for explaining a tone generation control system according
to a second modification; FIG. 5 is a diagram showing a functional configuration of a tone
generation control system according to the modification; FIG. 6 is a conceptual view of a tone
generation control system according to the modification; FIG. 7 is a diagram for explaining the
operation of the tone generation control system according to the modification; FIG. 8 is a view
showing the configuration of a stereo sound generation system according to a third modification;
FIG. 9 is a diagram illustrating a conventional speaker system. FIG. 10 is a diagram illustrating a
conventional speaker system. FIG. 11 is a diagram illustrating a conventional speaker system.
[Description of the code] 100, 100 ', 10 ... stereo sound generation system, 200, 20 ... stereo
sound source device, 210, 21, SS ... stereo sound source, 300, 30 ... mixing device, 310, 31:
Mixer, 400, 40: Speaker system 410, 41, SP: Speaker 500: tone generation control system 600:
tone generation device 800: operation terminal 80 , 61: wireless communication unit, MS:
operation sensor, AS: antenna system, AT: antenna, 62: information analysis unit, 63:
performance parameter determination unit, 64: Speaker selection section.
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