JP2023168662A - Acoustic system and acoustic control method - Google Patents

Abstract

To provide an acoustic system and an acoustic control method capable of providing people in a place other than an auditorium with a sense of presence as if they were in the auditorium by generating sound collected in the auditorium.SOLUTION: An acoustic system 1 includes a plurality of microphones 10, a plurality of amplifiers 20, and a plurality of speakers 30. The plurality of microphones 10 are installed on stands in a stadium and convert collected sounds into electric signals. The plurality of amplifiers 20 amplify the electric signals output from the microphones 10. The plurality of speakers 30 are installed on a concourse in the stadium and convert the electric signals amplified by the amplifiers 20 into sounds and output the sounds. The speakers 30 each convert the electrical signal output from the microphone 10 located closest to the speaker 30 and amplified by the amplifier 20 into the sound and outputs it.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to an acoustic system and an acoustic control method.

When watching sports events held at stadiums, including baseball stadiums, soccer fields, and racetracks, not only can you enjoy watching the game directly from the stadium's spectator seats, but you can also enjoy watching the game indirectly on a monitor while enjoying food and drinks on the concourse. things are being done. However, when watching a game from the concourse, you cannot hear audio including cheers from the spectator seats, so you cannot get the same sense of realism as watching from the spectator seats.

Patent Document 1 discloses a video/audio input system having a video input device and a plurality of audio input devices, and a video/audio output system having a plurality of audio output devices corresponding to each of the video output device and the plurality of audio input devices. A video/audio input/output system comprising the following is described. For multiple audio output devices, if a perpendicular line is drawn from each point where each of the corresponding multiple audio input devices is installed to the display screen, each foot of the perpendicular line is calculated based on the reduction ratio of the image relative to the actual size or It is installed at each position determined when the image is reduced or enlarged based on the center of the image according to the enlargement ratio.

Japanese Patent Application Publication No. 2010-252102

According to the video/audio input/output system described in Patent Document 1, viewers who cannot go to the venue are allowed to view the video and audio of a concert venue or sports venue where an audience gathers at a remote location. Such video and audio input/output systems have a problem in that they cannot provide realistic audio as if they were in the audience seats to people who are at the venue but are not watching the performance or competition directly from the audience seats. .

The present disclosure has been made in view of this problem, and by emitting sound collected in the audience seats to a place other than the audience seats, it is possible to make people who are in places other than the audience seats feel as if they are in the audience seats. It is an object of the present invention to provide a sound system and a sound control method that can provide a sense of presence.

In order to achieve the above object, an audio system according to the present disclosure includes multiple microphones, multiple amplifiers, and multiple speakers. Multiple microphones are installed in the stands of the stadium and convert the collected sound into electrical signals. The plurality of amplifiers amplify the electrical signals output from the microphones. Multiple speakers are installed in the concourse of the stadium and convert electrical signals amplified by amplifiers into sound and output them. The speaker converts an electrical signal output from a microphone placed closest to the speaker and amplified by an amplifier into sound and outputs the sound.

According to the present disclosure, a sound system that can give a sense of presence to people who are in a place other than the audience seats by emitting sound collected in the audience seats to a place other than the audience seats. and an acoustic control method.

Block diagram showing an audio system according to Embodiment 1 A diagram showing the sound system installed in the stadium of Embodiment 1 Block diagram showing an acoustic system according to Embodiment 2 Diagram showing the sound system installed in the stadium of Embodiment 2 Diagram showing the sound system installed in the stadium of Embodiment 4

(Embodiment 1)
An acoustic system 1 according to Embodiment 1 of the present disclosure will be described with reference to FIGS. 1 and 2. Identical or corresponding parts in the figures are given the same reference numerals.

FIG. 1 is a block diagram showing an audio system 1 according to the first embodiment. As shown in FIG. 1, the acoustic system 1 includes n microphones 10 that collect ambient sound, n amplifiers 20 that amplify electrical signals representing sound, and converts the electrical signals into sound and outputs the sound. n speakers 30. Each of the n microphones 10 is referred to as microphone 10 ₁ , 10 ₂ , . . . , 10 _n . The same applies to the amplifier 20 and speaker 30.

The microphone 10 is a device that collects surrounding sounds. The microphone ₁₀₁ is connected to the amplifier ₂₀₁ by wire or wirelessly. The microphone ₁₀₁ converts the collected sound into an electrical signal and transmits the electrical signal to the connected amplifier ₂₀₁ . The same applies to the microphones 10 ₂ , 10 ₃ , . . . , 10 _n .

The amplifier 20 is a device that amplifies electrical signals representing sound. The amplifier 20 ₁ is connected to the microphone 10 ₁ and the speaker 30 ₁ by wire or wirelessly. The amplifier 20 ₁ amplifies the electrical signal transmitted from the microphone 10 ₁ and transmits it to the speaker 30 ₁ . The same applies to the amplifiers 20 ₂ , 20 ₃ , . . . , 20 _n .

The speaker 30 is a device that converts an electrical signal into sound and outputs it. The speaker ₃₀₁ is connected to the amplifier ₂₀₁ by wire or wirelessly. The speaker ₃₀₁ converts the electrical signal transmitted from the amplifier ₂₀₁ into sound and outputs the sound. The same applies to the speakers 30 ₂ , 30 ₃ , . . . , 30 _n .

FIG. 2 is a diagram showing the sound system 1 installed in the stadium 100. As shown in FIG. 2, the stadium 100 includes a ground 110 where competitions are held, stands 120 that are spectator seats that surround the ground 110, and a concourse 130 that is a passage that surrounds the stands 120 and where shops or restaurants are arranged. ,including. Stadium 100 may include, but is not limited to, an outdoor stadium, including a baseball field, or an indoor stadium.

As shown in FIG. 2, the microphones 10 ₁ , 10 ₂ , . . . , 10 _n are placed on a stand 120 . An amplifier 20 ₁ and a speaker 30 ₁ (not shown) are combined and arranged in the concourse 130 . The amplifier 20 ₁ and the speaker 30 ₁ are arranged so that the distance to the microphone 10 ₁ among all the microphones 10 is the smallest. The same applies to the amplifiers 20 ₂ , 20 ₃ , . . . , 20 _n and the speakers 30 ₂ , 30 ₃ , . . . , 30 _n . Note that in FIG. 2, n=8.

By arranging the microphone 10, amplifier 20, and speaker 30 as shown in FIG. 2, the speaker 30 outputs the sound collected by the closest microphone 10.

By having the above configuration, the sound system 1 according to the first embodiment emits the sound collected in the audience seats to a place other than the audience seats, so that the sound system 1 according to the first embodiment can inform people who are in places other than the audience seats. It can give you a sense of realism.

According to the sound system 1 according to the first embodiment, by outputting the sound collected by the closest microphone 10 from the speaker 30, people in the concourse can cheer for the people in the audience seats. You can listen to the music as if you were in the audience, giving you a sense of realism as if you were sitting in the audience.

(Embodiment 2)
The acoustic system 1 according to the second embodiment will be described with reference to FIGS. 3 and 4. The acoustic system 1 according to the second embodiment synthesizes sounds collected by a plurality of microphones 10 and outputs the synthesized sounds from a speaker 30.

FIG. 3 is a block diagram showing the audio system 1 according to the second embodiment. As shown in FIG. 3, the acoustic system 1 includes n microphones 10, n amplifiers 20, n speakers 30, and n synthesis devices 40 that synthesize electrical signals.

The microphone ₁₀₁ is connected to the synthesizer ₄₀₁ and the synthesizer _40n by wire or wirelessly. That is, the next number before 1 is set to n, and the synthesizer ₄₀₁ having the same number and the synthesizer _40n having the previous number are connected. The microphone ₁₀₁ converts the collected sound into an electrical signal, and transmits the electrical signal to the connected synthesizer ₄₀₁ and synthesizer _40n . The same applies to the microphones 10 ₂ , 10 ₃ , . . . , 10 _n .

The amplifier 20 ₁ is connected to the synthesizer 40 ₁ and the speaker 30 ₁ by wire or wirelessly. The amplifier 20 ₁ amplifies the electrical signal transmitted from the synthesizer 40 ₁ and transmits it to the speaker 30 ₁ . The same applies to the amplifiers 20 ₂ , 20 ₃ , . . . , 20 _n .

The speaker ₃₀₁ is connected to the amplifier ₂₀₁ by wire or wirelessly. The speaker ₃₀₁ converts the electrical signal transmitted from the amplifier ₂₀₁ into sound and outputs the sound. The same applies to the speakers 30 ₂ , 30 ₃ , . . . , 30 _n .

The synthesizer 40 is a device that synthesizes and outputs electrical signals representing the acquired sounds. The synthesis device ₄₀₁ is connected to the microphones ₁₀₁ and ₁₀₂ , and the amplifier ₂₀₁ by wire or wirelessly. That is, the next number after n is set to 1, and the microphone 10 ₁ with the same number, the microphone 10 ₂ with the next number after n, and the amplifier 20 ₁ are connected. The synthesizer 40 ₁ synthesizes electrical signals representing sounds transmitted from the connected microphones 10 ₁ and 10 ₂ , and transmits the synthesized electrical signals to the connected amplifier 20 ₁ .

The synthesizer 40 ₁ weights the electric signal acquired from the microphone 10 ₁ according to the distance between the microphone 10 ₁ and the speaker 30 ₁ to which the amplifier 20 ₁ to which the synthesizer 40 ₁ is connected is connected. Synthesize. The same applies to the synthesizers 40 ₂ , 40 ₃ , . . . , 40 _n .

The electrical signal output by the synthesizer ₄₀₁ can be expressed by the following equation.
(Output of synthesizer ₄₀₁ )
= (output of microphone 10 ₁ ) x (distance weight of microphone 10 ₁ to speaker 30 ₁ )
+ (output of microphone 10 ₂ ) × (distance weight of microphone 10 ₂ to speaker 30 ₁ )

Here, if the distance between the microphone 10 ₁ and the speaker 30 ₁ is L ₁₁ , the distance weight between the microphone 10 ₁ and the speaker 30 ₁ may be (1/L ₁₁ ), but is not limited to this.

FIG. 4 is a diagram showing the acoustic system 1 installed in the stadium 100. As shown in FIG. 4, the microphones 10 ₁ , 10 ₂ , . . . , 10 _n are placed on a stand 120 . Note that in FIG. 4, n=8.

The amplifier 20 ₁ and the speaker 30 ₁ are arranged in combination in the concourse 130 . The amplifier 20 ₁ and the speaker 30 ₁ have the first and second smallest distances from the microphone 10 ₁ and the microphone 10 ₂ to which the synthesizer 40 ₁ to which the amplifier 20 ₁ is connected are connected, among all the microphones 10. It is arranged so that The same applies to the amplifiers 20 ₂ , 20 ₃ , . . . , 20 _n and the speakers 30 ₂ , 30 ₃ , . . . , 30 _n .

The synthesizers 40 ₁ , 40 ₂ , . . . , 40 _n are arranged in the concourse 130 . The synthesis device 40 ₁ is placed at any position that can be connected to the microphone 10 _{1 ,} the microphone 10 ₂ , and the amplifier 20 ₁ . In FIG. 4, it is arranged between microphone ₁₀₁ and microphone ₁₀₂ .

As shown in FIG. 4, a microphone 10, an amplifier 20, and a speaker 30 are arranged, and a synthesizer 40 synthesizes electrical signals representing sound, so that the sound collected by the microphone 10 is weighted according to the distance from the speaker 30. The synthesized sound is output.

By having the above configuration, the acoustic system 1 according to the second embodiment has the same effects as the acoustic system 1 according to the first embodiment.

According to the acoustic system 1 according to the second embodiment, by outputting a synthesized sound that is weighted according to the distance between the microphone 10 and the speaker 30 from the speaker 30, people in the concourse can hear the actual audience seats. You can hear a sound that is closer to the actual sound, giving you the feeling of being in the audience seats.

(Embodiment 3)
The acoustic system 1 according to Embodiment 3 will be described. The acoustic system 1 according to the third embodiment synthesizes sounds collected by a plurality of microphones 10 in consideration of the terrain or the presence of shielding objects, and outputs the synthesized sounds from the speaker 30. The configuration of the acoustic system 1 according to the third embodiment is the same as the acoustic system 1 according to the second embodiment.

The synthesizer 40 ₁ of Embodiment 3 uses the electrical signal acquired from the microphone 10 ₁ according to the distance between the microphone 10 ₁ and the speaker 30 ₁ to which the amplifier 20 ₁ to which the synthesizer 40 ₁ is connected is connected. and a weight for adjusting the electrical signal output from the microphone ₁₀₁ . Furthermore, a weight is added to the combined electrical signal to adjust the electrical signal input to the speaker ₃₀₁ . The same applies to the synthesizers 40 ₂ , 40 ₃ , . . . , 40 _n .

The electrical signal output by the synthesizer ₄₀₁ can be expressed by the following equation.
(Output of synthesizer ₄₀₁ )
= (Overall adjustment weight) ×
{(output of microphone 10 ₁ ) x (distance weight of microphone 10 ₁ to speaker 30 ₁ ) x (adjustment weight of microphone 10 ₁ )
+ (output of microphone 10 ₂ ) × (distance weight of microphone 10 ₂ to speaker 30 ₁ ) × (adjustment weight of microphone 10 ₂ )}

The overall adjustment weight is a weight that adjusts the electrical signal input to the speaker 30 ₁ , and is given according to the environment of the speaker 30 ₁ . The overall adjustment weight includes, but is not limited to, a weight that is increased when the speaker ₃₀₁ is located in a noisy position and the output is desired to be increased, or a weight that is decreased when it is desired to keep the area around the speaker ₃₀₁ quiet.

The adjustment weight of the microphone 10 ₁ is a weight that adjusts the electrical signal output from the microphone 10 ₁ and is given according to the environment of the microphone 10 ₁ . The adjustment weight for the microphone 10 ₁ is increased when there is a shielding object around the microphone 10 ₁ and it is difficult to collect sound, or when there is a reflective object around the microphone 10 ₁ and the sound is reflected and excessively collected. This includes, but is not limited to, weights that are reduced.

By having the above configuration, the acoustic system 1 according to the third embodiment has the same effects as the acoustic system 1 according to the first or second embodiment.

According to the sound system 1 according to the third embodiment, by outputting from the speakers 30 a sound weighted and synthesized in consideration of the topography or the presence of shielding objects, people in the concourse can hear the sounds in the actual audience seats. You can hear a sound that is closer to the sound of the audience, and you can experience the realism of being in the audience seats.

(Embodiment 4)
The acoustic system 1 according to Embodiment 4 will be described with reference to FIG. 5. The sound system 1 according to the fourth embodiment outputs the sound collected by the concourse 130 by the stand 120.

FIG. 5 is a diagram showing the acoustic system 1 installed in the stadium 100. As shown in FIG. 5, microphones 10 ₁ , 10 ₂ , . . . , 10 _n are arranged in a concourse 130 . The amplifier 20 ₁ and the speaker 30 ₁ are placed in combination on the stand 120 . The amplifier 20 ₁ and the speaker 30 ₁ are arranged so that the distance to the microphone 10 ₁ among all the microphones 10 is the smallest. The same applies to the amplifiers 20 ₂ , 20 ₃ , . . . , 20 _n and the speakers 30 ₂ , 30 ₃ , . . . , 30 _n . Note that in FIG. 5, n=8. The microphone 10, amplifier 20, and speaker 30 are also referred to as a second microphone, a second amplifier, and a second speaker, respectively.

By arranging the microphone 10, amplifier 20, and speaker 30 as shown in FIG. 5, the sound collected by the closest microphone 10 is output from the speaker 30.

By having the above configuration, the acoustic system 1 according to the fourth embodiment has the same effects as the acoustic system 1 according to the first embodiment.

According to the sound system 1 according to the fourth embodiment, by outputting the sound collected in the concourse 130 from the stand 120, the cheering from the concourse 130 can be transmitted to the people in the stand 120 and the competitors in the ground 110. This can increase the satisfaction of the people in the stands 120 and the players in the ground 110.

The embodiments of the present disclosure are not limited to those described above, and modifications are possible. For example, although the audio system 1 includes n microphones 10, n amplifiers 20, and n speakers 30, the invention is not limited to this. The numbers of microphones 10, amplifiers 20, and speakers 30 may be different. The same applies to the synthesis device 40.

In the second embodiment, the synthesis device 40 ₁ is connected to the microphone 10 ₁ and the microphone 10 ₂ by wire or wirelessly, but the invention is not limited to this. 3 to n microphones 10 may be connected.

When connected to all the microphones 10, the electrical signal output by the synthesizer ₄₀₁ can be expressed by the following equation.
(Output of synthesizer ₄₀₁ )
= (output of microphone 10 ₁ ) x (distance weight of microphone 10 ₁ to speaker 30 ₁ )
+ (output of microphone 10 ₂ ) × (distance weight of microphone 10 ₂ to speaker 30 ₁ )
+…
+ (output of microphone 10 _n ) × (distance weight of microphone 10 _n to speaker 30 ₁ )

Although the acoustic system 1 includes n synthesizers 40, the present invention is not limited to this. One synthesis device 40 may be provided, and the synthesis device 40 may be connected to all the microphones 10 and all the amplifiers 20. Further, two or more but less than n synthesis devices 40 may be provided.

Although the synthesis device 40 is arranged in the concourse 130, it is not limited thereto. The synthesizer 40 may be placed at any position including the ground 110 and the stand 120 as long as it can be connected to the microphone 10 and the amplifier 20.

In the fourth embodiment, the microphone 10 is placed in the concourse 130, and the amplifier 20 and speaker 30 are placed in the stand 120, but the present invention is not limited to this. The microphone 10 may also be placed on the stand 120, and the amplifier 20 and speaker 30 may also be placed on the concourse 130. The microphone 10 may be placed at two or more of the ground 110, the stand 120, and the concourse 130. The same applies to the amplifier 20 and speaker 30.

Although the stadium 100 may include an outdoor stadium including a baseball field or an indoor stadium, the stadium 100 is not limited thereto. It may be a music facility, including a live house or a concert hall, and any facility that can accommodate an audience.

Although the preferred embodiments have been described in detail above, they are not limited to the embodiments described above, and various modifications may be made to the embodiments described above without departing from the scope of the claims. Variations and substitutions can be made.

Hereinafter, various aspects of the present disclosure will be collectively described as supplementary notes.

(Additional note 1)
Multiple microphones are installed in the stands of the stadium and convert the collected sound into electrical signals.
a plurality of amplifiers that amplify the electrical signals output from the microphone;
a plurality of speakers installed in the concourse of the stadium and converting the electrical signal amplified by the amplifier into sound and outputting it,
The speaker converts an electrical signal output from the microphone placed closest to the speaker and amplified by the amplifier into sound and outputs the sound.
sound system.
(Additional note 2)
comprising a synthesis device that synthesizes electrical signals output from two or more of the plurality of microphones,
The speaker converts the electrical signals synthesized by the synthesizer and amplified by the amplifier into sound and outputs the sound.
The sound system described in Appendix 1.
(Additional note 3)
The speaker converts into sound the electrical signals weighted and synthesized by the synthesizer according to the distance between the speaker and the microphone and amplified by the amplifier, and outputs the sound.
The sound system described in Appendix 2.
(Additional note 4)
The synthesis device synthesizes the electrical signals by weighting them according to the environment in which the speaker is placed.
The sound system according to appendix 2 or 3.
(Appendix 5)
The synthesis device synthesizes the electrical signals by weighting them according to the environment in which the microphone is placed.
The sound system according to any one of appendices 2 to 4.
(Appendix 6)
a plurality of second microphones installed in the concourse and converting collected sound into electrical signals;
a plurality of second amplifiers that amplify the electrical signals output from the second microphone;
further comprising a plurality of second speakers installed on the stand and converting the electrical signal amplified by the second amplifier into sound and outputting the sound,
The second speaker converts into sound an electric signal output from the second microphone disposed closest to the second speaker and amplified by the second amplifier, and outputs the sound.
The sound system according to any one of Supplementary Notes 1 to 4.
(Appendix 7)
Converts sound collected from the stadium concourse into electrical signals,
Amplify the converted electrical signal,
converting the amplified electrical signal into sound and outputting it at the stands of the stadium;
Sound control method.

1 Sound system, 10, 10 ₁ , 10 ₂ ,..., 10 _n Microphone, 20, 20 ₁ , 20 ₁ ,..., 20 _n Amplifier, 30, 30 ₁ , 30 ₂ ,..., 30 _n Speaker, 40, 40 ₁ ,40 ₂ ,...,40 _n synthesis equipment, 100 stadium, 110 ground, 120 stands, 130 concourse.

Claims (7)

Multiple microphones are installed in the stands of the stadium and convert the collected sound into electrical signals.
a plurality of amplifiers that amplify the electrical signals output from the microphone;
a plurality of speakers installed in the concourse of the stadium and converting the electrical signal amplified by the amplifier into sound and outputting it,
The speaker converts an electrical signal output from the microphone placed closest to the speaker and amplified by the amplifier into sound and outputs the sound.
sound system. comprising a synthesis device that synthesizes electrical signals output from two or more of the plurality of microphones,
The speaker converts the electrical signals synthesized by the synthesizer and amplified by the amplifier into sound and outputs the sound.
The acoustic system according to claim 1. The speaker converts into sound the electrical signals weighted and synthesized by the synthesizer according to the distance between the speaker and the microphone and amplified by the amplifier, and outputs the sound.
The acoustic system according to claim 2. The synthesis device synthesizes the electrical signals by weighting them according to the environment in which the speaker is placed.
The acoustic system according to claim 3. The synthesis device synthesizes the electrical signals by weighting them according to the environment in which the microphone is placed.
The acoustic system according to any one of claims 2 to 4. a plurality of second microphones installed in the concourse and converting collected sound into electrical signals;
a plurality of second amplifiers that amplify the electrical signals output from the second microphone;
further comprising a plurality of second speakers installed on the stand and converting the electrical signal amplified by the second amplifier into sound and outputting the sound,
The second speaker converts into sound an electric signal output from the second microphone disposed closest to the second speaker and amplified by the second amplifier, and outputs the sound.
An acoustic system according to any one of claims 1 to 4. Converts sound collected from the stadium concourse into electrical signals,
Amplify the converted electrical signal,
converting the amplified electrical signal into sound and outputting it at the stands of the stadium;
Sound control method.

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