JPH04278799A - Sound field controller - Google Patents

Sound field controller

Info

Publication number
JPH04278799A
JPH04278799A JP3041530A JP4153091A JPH04278799A JP H04278799 A JPH04278799 A JP H04278799A JP 3041530 A JP3041530 A JP 3041530A JP 4153091 A JP4153091 A JP 4153091A JP H04278799 A JPH04278799 A JP H04278799A
Authority
JP
Japan
Prior art keywords
sound
signal
atmospheric
sounds
direct
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP3041530A
Other languages
Japanese (ja)
Inventor
Eijiro Watanabe
栄治郎 渡邊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Ten Ltd
Original Assignee
Denso Ten Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Denso Ten Ltd filed Critical Denso Ten Ltd
Priority to JP3041530A priority Critical patent/JPH04278799A/en
Publication of JPH04278799A publication Critical patent/JPH04278799A/en
Withdrawn legal-status Critical Current

Links

Landscapes

  • Stereophonic System (AREA)
  • Reverberation, Karaoke And Other Acoustics (AREA)

Abstract

PURPOSE:To obtain the more satisfactory presence by outputting not only a sound field by a musical performance sound but also an atmospheric sound except a musical performance sound in a concert hall. CONSTITUTION:In the sound field controller for generating an initial reflection sound signal and a reverberation sound signal by an acoustic signal and outputting them from the corresponding loudspeaker system 4, this controller is provided with an atmospheric sound source 1 for storing atmospheric sound signals corresponding to a direct sound, an initial reflection sound and an atmospheric signal except a reverberation in a concert hall, by a format corresponding to the direct sound, the initial reflection sound and the reverberation sound or a format corresponding to the loudspeaker system 4, and a mixing means 3 for mixing the direct sound signal, the initial reflection sound signal and the reverberation sound signal and the atmospheric sound signal.

Description

【発明の詳細な説明】[Detailed description of the invention]

【0001】0001

【産業上の利用分野】本発明は、コンサートホール等に
おいて周囲の壁での反射により発生する反響音に相当す
る音を音響信号より生成して所定のスピーカシステムよ
り出力することで、あたかも演奏会場にいるが如き臨場
感が得られるようにした音場制御装置に関し、特に音響
信号による音場だけでなく実際の演奏会場での雰囲気ま
で再生できるようにした音場制御装置に関する。
[Industrial Application Field] The present invention generates a sound equivalent to the reverberation sound generated by reflection from surrounding walls in a concert hall etc. from an acoustic signal and outputs it from a predetermined speaker system, making it sound like a concert hall. The present invention relates to a sound field control device capable of providing a sense of realism as if one were actually there, and particularly to a sound field control device capable of reproducing not only a sound field based on acoustic signals but also the atmosphere of an actual performance venue.

【0002】0002

【従来の技術】普通の部屋においても、あたかもコンサ
ートホール等の実際の演奏会場にいるが如き聴感が得ら
れるように、多くのスピーカを設置してそれぞれから異
なる信号を出力する音場制御装置と呼ばれるオーディオ
システムがある。これはコンサートホール等において、
図6に示すように演奏点から直接伝達される直接音、左
右の両側壁面を主とする最初の反射による初期反射音、
及び複数回反射を繰り返して減衰しながらより長い時間
にわたって伝達される残響音をそれぞれ計測しておき、
直接音に相当する音響信号から同様の音響効果を生じる
ような信号を作り出してそれぞれのスピーカから出力す
るものである。
[Prior Art] A sound field control device that installs many speakers and outputs different signals from each so that even in an ordinary room, you can hear as if you were in an actual performance venue such as a concert hall. There is an audio system called This is done in concert halls etc.
As shown in Figure 6, the direct sound transmitted directly from the performance point, the early reflected sound mainly due to the first reflection from the left and right side walls,
and reverberant sound that is transmitted over a longer period of time while being reflected multiple times and attenuated.
A signal that produces a similar acoustic effect is created from an acoustic signal corresponding to a direct sound, and is output from each speaker.

【0003】高級なシステムでは、スピーカの数は非常
に多い場合もあるが、比較的簡単なシステムには図7に
示すように部屋9eの前方中央に直接音用スピーカ41
eを配置し、部屋の前方両側に初期反射音用スピーカ4
2eを配置し、部屋の後方両側に残響音用スピーカ43
eを配置している。そして所定のリスニングポイント8
e内で所望の音場が得られるように制御している。
[0003] In a high-end system, the number of speakers may be very large, but in a relatively simple system, as shown in FIG.
e, and early reflection sound speakers 4 on both sides of the front of the room.
2e and reverberant sound speakers 43 on both sides of the rear of the room.
e is placed. and predetermined listening points 8
Control is performed so that a desired sound field can be obtained within e.

【0004】音場には多くの種類があり、これらを聴取
者の好みに応じて選択できるようになっている。例えば
クラッシック音楽用には、著名なコンサートホール、教
会、室内楽用の部屋等での音場が再現できるようになっ
ている。またジャズ音楽用には小さなジャズクラブの音
場が再現でき、ロック音楽用にはスタジアムのようなロ
ックコンサート会場の音場が再現できる。
[0004] There are many types of sound fields, and listeners can select one of them according to their preference. For example, for classical music, it is possible to reproduce the sound fields of famous concert halls, churches, chamber music rooms, etc. Also, for jazz music, the sound field of a small jazz club can be reproduced, and for rock music, the sound field of a rock concert venue such as a stadium can be reproduced.

【0005】[0005]

【発明が解決しようとする課題】前記のように、音場制
御装置では直接音に相当する音響信号より初期反射音信
号と残響音信号を生成している。そのため基になる音響
信号はできるだけ直接音に相当する信号だけで構成され
、初期反射音や残響音に相当する信号を含まないことが
望ましい。もし音響信号に残響音等が含まれると、これ
から更に残響音が生成され、残響音が二重になり好まし
くない。
As described above, the sound field control device generates an early reflected sound signal and a reverberant sound signal from an acoustic signal corresponding to a direct sound. Therefore, it is desirable that the base acoustic signal is composed of only signals corresponding to direct sound as much as possible, and does not include signals corresponding to early reflected sounds or reverberant sounds. If reverberation or the like is included in the acoustic signal, further reverberation will be generated and the reverberation will be doubled, which is undesirable.

【0006】すなわちこれまでの音場制御装置は、所望
の演奏会場で聴取者が一人で演奏を聞いている状況を再
現しているといえる。このような音場は一面では理想と
もいえるが、実際の演奏会場には演奏音以外にも多くの
音が存在するため演奏会場にいて得られる臨場感とは異
なる感覚を与えることになる。演奏会場で音楽を聞く場
合には、実際に演奏会場にいるということで影響を受け
るため、演奏音による音場だけが同じ様に再現されても
臨場感は不充分である。特にジャズ音楽やロック音楽の
場合には、演奏会場にいるという臨場感が重要な部分を
占めている。
In other words, conventional sound field control devices can be said to reproduce the situation where a listener is listening to a performance alone at a desired performance venue. Although such a sound field can be said to be ideal in one sense, in an actual performance venue there are many sounds other than the performance sound, so it gives a sense of presence that is different from the sense of presence that can be obtained at a performance venue. When listening to music at a performance venue, the experience is affected by being actually in the performance venue, so even if only the sound field of the performance sounds is reproduced in the same way, the sense of realism is insufficient. Particularly in the case of jazz music and rock music, the sense of presence of being at the performance venue is an important part.

【0007】しかしこれまでの音制御装置は、演奏会場
での演奏音の音場の制御のみを行うだけで、実際に演奏
会場にいる雰囲気を出すようなことは行なっていなかっ
た。そのため良好な音場が再現されても、演奏会場にい
る感覚が充分得られるとはいえなかった。本発明は上記
問題点に鑑みてなされたものであり、音場だけでなく演
奏会場での雰囲気も再現するような音場制御装置を実現
することを目的とする。
However, conventional sound control devices only control the sound field of performance sounds at a performance venue, but do not create the atmosphere of actually being at the performance venue. Therefore, even if a good sound field was reproduced, it could not be said that the user could fully experience the feeling of being at a concert venue. The present invention has been made in view of the above problems, and it is an object of the present invention to realize a sound field control device that reproduces not only the sound field but also the atmosphere of a performance venue.

【0008】[0008]

【課題を解決するための手段】本発明の音場制御装置で
は上記問題点を解決するため、直接音、初期反射音及び
残響音以外の、拍手、ざわめき等の演奏会場の雰囲気を
出す雰囲気音を雰囲気音信号として記憶しておき、この
雰囲気音を対応するスピーカより出力する。図1は、本
発明の音場制御装置の基本構成を示す図である。なお図
においては、同一の機能部分については同一番号を付し
、図1以外では更にアルファベットの小文字を付して表
わすこととする。
[Means for Solving the Problems] In order to solve the above-mentioned problems, the sound field control device of the present invention provides atmospheric sounds other than direct sounds, early reflection sounds, and reverberant sounds that create the atmosphere of a performance venue, such as applause and murmurs. is stored as an atmosphere sound signal, and this atmosphere sound is output from the corresponding speaker. FIG. 1 is a diagram showing the basic configuration of a sound field control device according to the present invention. In the drawings, the same functional parts are designated by the same numbers, and parts other than those shown in FIG. 1 are represented by lowercase letters.

【0009】すなわち本発明の音場制御装置は、直接音
信号である音響信号より初期反射音信号及び残響音信号
を生成し、対応するスピーカシステム4より直接音、初
期反射音及び残響音を出力する音場制御装置において、
演奏会場での直接音、初期反射音及び残響音以外の雰囲
気に相当する雰囲気音信号を直接音、初期反射音及び残
響音に対応する形式又はスピーカシステム4に対応する
形式で記憶した雰囲気音用音源1、及び直接音信号、初
期反射音信号及び残響音信号と雰囲気音信号とを混ぜ合
せるミキシング手段3を備えることを特徴とする。
That is, the sound field control device of the present invention generates an early reflected sound signal and a reverberant sound signal from an acoustic signal that is a direct sound signal, and outputs the direct sound, early reflected sound, and reverberant sound from the corresponding speaker system 4. In a sound field control device that
For atmospheric sound, an atmospheric sound signal corresponding to the atmosphere other than the direct sound, early reflected sound, and reverberant sound at the performance venue is stored in a format corresponding to the direct sound, early reflected sound, and reverberant sound, or in a format compatible with the speaker system 4. It is characterized by comprising a sound source 1, and a mixing means 3 for mixing a direct sound signal, an early reflection sound signal, a reverberant sound signal, and an atmospheric sound signal.

【0010】0010

【作用】演奏会場では、拍子、ざわめき、足音、足を踏
み鳴す音、更には楽器の調整音等、演奏される音以外に
多くの音が存在する。ここではこれらの音を雰囲気音と
称している。もちろんこれらの雰囲気音は演奏には直接
関係ない雑音ともいえる音であるが、これらの音が存在
すれば演奏会場にいる臨場感が高められる。そこで本発
明ではこれらの雰囲気音に相当する雰囲気音信号を雰囲
気音用音源1に記憶しておく。しかも雰囲気音は、例え
ば拍子やざわめきを例にとれば、演奏位置より聞えてく
るものではなく、客席である後方や側方から聞こえるも
のである。そのためこれらの雰囲気音は残響音を出力す
る後方のスピーカより出力される方が、より臨場感が増
すことになる。そこで本発明では雰囲気音信号は、直接
音、初期反射音及び残響音と対応する形式又はスピーカ
システム4の個々のスピーカに対応する形式で記憶され
ており、ミキシング手段3でそれぞれ対応する信号と混
ぜ合された上で所定のスピーカより出力されるようにす
ることで、臨場感を増している。
[Operation] At a performance venue, there are many sounds other than the sounds being played, such as beats, rustling, footsteps, stomping feet, and even the sound of adjusting musical instruments. Here, these sounds are referred to as atmosphere sounds. Of course, these atmospheric sounds can be said to be noises that are not directly related to the performance, but the presence of these sounds enhances the sense of being in the performance venue. Therefore, in the present invention, atmospheric sound signals corresponding to these atmospheric sounds are stored in the atmospheric sound sound source 1. Moreover, atmospheric sounds, such as beats and murmurs, are not heard from the performance position, but are heard from the rear and sides of the audience seats. Therefore, if these atmospheric sounds are output from rear speakers that output reverberant sounds, the sense of reality will be more enhanced. Therefore, in the present invention, the atmospheric sound signal is stored in a format corresponding to direct sound, early reflection sound, and reverberation sound, or in a format corresponding to each speaker of the speaker system 4, and is mixed with the corresponding signal in the mixing means 3. The sense of realism is increased by combining the images and outputting them from a predetermined speaker.

【0011】[0011]

【実施例】音場制御装置では、音響信号はそのまま直接
音信号とし、初期反射音信号と残響音信号は音場に応じ
てあらかじめ定められた関係に基づいて音響信号より生
成している。この初期反射音信号と残響音信号の生成に
はデジタルシグナルプロセッサ(以下DSPと称する。 )を使用したデジタルフィルタで行なうのが一般的であ
り、本発明の音場制御装置でもDSPを使用している。 本発明の実施例の構成を図2に示す。
DESCRIPTION OF THE PREFERRED EMBODIMENTS In a sound field control device, an acoustic signal is directly used as a direct sound signal, and an early reflected sound signal and a reverberant sound signal are generated from the acoustic signal based on a predetermined relationship depending on the sound field. The generation of the early reflected sound signal and the reverberant sound signal is generally performed using a digital filter using a digital signal processor (hereinafter referred to as DSP), and the sound field control device of the present invention also uses a DSP. There is. FIG. 2 shows the configuration of an embodiment of the present invention.

【0012】図2において、雰囲気音用音源1aとミキ
サ31aを除く部分は従来の音場制御装置と同様の構成
である。音響信号は、アンプ14aを介して直接音とし
て直接音用スピーカ41aから出力されると共に、A/
D変換器11aでデジタル信号に変換され、変換された
信号に基づいて DSP12aで初期反射音信号と残響
音信号が生成され、D/A変換器13aで再びアナログ
信号に変換された後、アンプ15aと16aを介して初
期反射音用スピーカ42aと残響音用スピーカ43aか
ら出力される。マイクロコンピュータ17a、 ROM
18a及び RAM19aは、選択された音場に応じて
 DSP12aが生成する初期反射音と残響音を変える
ように、 DSP12aの制御値を変えるためのもので
ある。
In FIG. 2, the parts except the atmospheric sound source 1a and the mixer 31a have the same structure as the conventional sound field control device. The acoustic signal is output as direct sound from the direct sound speaker 41a via the amplifier 14a, and is also output from the A/
It is converted into a digital signal by the D converter 11a, and based on the converted signal, an early reflected sound signal and a reverberation sound signal are generated by the DSP 12a, and after being converted into an analog signal again by the D/A converter 13a, the signal is sent to the amplifier 15a. and 16a, the signal is output from the early reflection sound speaker 42a and the reverberation sound speaker 43a. Microcomputer 17a, ROM
18a and RAM 19a are for changing control values of the DSP 12a so as to change the early reflected sound and reverberation sound generated by the DSP 12a according to the selected sound field.

【0013】本実施例では、拍手、ざわめき、足音、歓
音が直接音、初期反射音及び残響音に対応する形式で雰
囲気音用音源1aに記憶されている。そして雰囲気音選
択スイッチ22aで上記の雰囲気音から選択した雰囲気
音信号を DSP12aの加算回路に印加して初期反射
音信号と残響音信号と混ぜ合せている。雰囲気音信号の
直接音の分のみはそのままD/A変換した後、アナログ
型のミキサ回路31aで直接音信号と混ぜ合される。
In this embodiment, applause, murmurs, footsteps, and cheering sounds are stored in the atmospheric sound source 1a in formats corresponding to direct sounds, early reflected sounds, and reverberant sounds. Then, an atmospheric sound signal selected from the above-mentioned atmospheric sounds by the atmospheric sound selection switch 22a is applied to the addition circuit of the DSP 12a, and mixed with the early reflected sound signal and the reverberant sound signal. Only the direct sound portion of the atmosphere sound signal is directly D/A converted, and then mixed with the direct sound signal in an analog mixer circuit 31a.

【0014】本実施例では拍手、ざわめき等の雰囲気音
は、図3に示すような雰囲気音選択パネルで選択できる
ようになっている。しかし音場を選択すれば、それに応
じて適当な雰囲気音もある程度定まるので、音場に対応
して雰囲気音信号を定めておき、音場の選択に応じて自
動的に雰囲気音が定まるようにしておくこともできる。 その場合の操作パネルの例を図4に示す。パネル22c
には音場選択スイッチの他に、雰囲気音信号を混ぜるか
どうかの選択を行なうためのスイッチが設けられている
In this embodiment, atmospheric sounds such as applause and murmurs can be selected using an atmospheric sound selection panel as shown in FIG. However, if you select a sound field, the appropriate atmosphere sound will be determined to some extent accordingly, so it is possible to determine the atmosphere sound signal corresponding to the sound field so that the atmosphere sound is automatically determined according to the sound field selection. You can also leave it there. An example of the operation panel in that case is shown in FIG. Panel 22c
In addition to the sound field selection switch, there is also a switch for selecting whether or not to mix the ambient sound signal.

【0015】実際に音場制御装置で音楽を聞く場合、特
に臨場感が途切れて問題になるのは音響信号の強度が小
さくなり、音が出力されなくなった時である。演奏音が
聞える場合には、従来の音場制御装置でもそれ程臨場感
が損なわれることはなかった。また演奏中はむしろ演奏
音のみで雰囲気音のような雑音がない方が良いという要
望もある。そこで音響信号の強度を検出し、その強度が
所定値以下のときのみ雰囲気音信号を出力するようにし
た実施例の構成を図5に示す。図5の構成では、図2に
比べて音響信号の強度を検出するレベル検出回路7dが
設けられており、このレベル検出回路7dの検出結果を
マイクロコンピュータ17dが監視して、音響信号の強
度が所定値である期間がある程度以上連続した時に、雰
囲気音用音源1dに記憶された雰囲気音信号を DSP
12dに出力するようにしている。
[0015] When actually listening to music using a sound field control device, the sense of realism is interrupted, which becomes a problem especially when the intensity of the acoustic signal decreases and no sound is output. When the performance sound can be heard, the sense of realism is not significantly impaired even with conventional sound field control devices. There is also a request that during a performance, it would be better to have only the performance sound and no ambient noise. FIG. 5 shows the configuration of an embodiment in which the intensity of the acoustic signal is detected and an ambient sound signal is output only when the intensity is less than a predetermined value. In the configuration of FIG. 5, compared to FIG. 2, a level detection circuit 7d for detecting the intensity of the acoustic signal is provided, and the microcomputer 17d monitors the detection result of this level detection circuit 7d to determine the intensity of the acoustic signal. When the predetermined period continues for more than a certain period, the DSP outputs the atmospheric sound signal stored in the atmospheric sound sound source 1d.
I am trying to output it to 12d.

【0016】[0016]

【発明の効果】本発明により、演奏による音場だけでな
く演奏会場の雰囲気音まで出すことで、より臨場感のあ
る音場が再現できる音場制御装置が実現できる。
According to the present invention, it is possible to realize a sound field control device that can reproduce a sound field with a more realistic feeling by emitting not only the sound field caused by the performance but also the atmospheric sound of the performance venue.

【図面の簡単な説明】[Brief explanation of the drawing]

【図1】本発明の音場制御装置の基本構成を示す図であ
る。
FIG. 1 is a diagram showing the basic configuration of a sound field control device according to the present invention.

【図2】DSPとマイクロコンピュータを用いて作った
実施例の構成を示す図である。
FIG. 2 is a diagram showing the configuration of an embodiment made using a DSP and a microcomputer.

【図3】雰囲気音選択用の操作パネルの例を示す図であ
る。
FIG. 3 is a diagram showing an example of an operation panel for selecting atmospheric sounds.

【図4】音場選択用パネルに選択された音場に対応づけ
られた雰囲気音を出力するかどうかの選択を行なうボタ
ンを設けた例を示す図である。
FIG. 4 is a diagram showing an example in which a sound field selection panel is provided with a button for selecting whether to output an atmospheric sound associated with a selected sound field.

【図5】音響信号の強度を検出して、所定強度以下の時
にのみ雰囲気音を出力するようにした実施例の構成を示
す図である。
FIG. 5 is a diagram showing the configuration of an embodiment in which the intensity of an acoustic signal is detected and ambient sound is output only when the intensity is below a predetermined intensity.

【図6】音場における音の時間変化の例を示す図である
FIG. 6 is a diagram showing an example of a temporal change in sound in a sound field.

【図7】音場制御装置におけるスピーカ配置の例を示す
図である。
FIG. 7 is a diagram showing an example of speaker arrangement in the sound field control device.

【符号の説明】[Explanation of symbols]

1…雰囲気音用音源 3…ミキシング手段 4…スピーカシステム 5…初期反射音信号生成手段 6…残響音信号生成手段 1...Sound source for atmosphere sound 3...Mixing means 4...Speaker system 5...Early reflected sound signal generation means 6...Reverberation sound signal generation means

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】  直接音信号に相当する音響信号より初
期反射音信号及び残響音信号を生成し、対応するスピー
カシステム(4)より直接音、初期反射音及び残響音を
出力する音場制御装置において、演奏会場での直接音、
初期反射音及び残響音以外の雰囲気音に相当する雰囲気
音信号を、直接音、初期反射音及び残響音に対応する形
式又は該スピーカシステム(4)に対応する形式で記憶
した雰囲気音用音源(1)、及び直接音信号、初期反射
音信号及び残響音信号と雰囲気音信号とを混ぜ合せるミ
キシング手段(3)を備えることを特徴とする音場制御
装置。
1. A sound field control device that generates an early reflected sound signal and a reverberant sound signal from an acoustic signal corresponding to a direct sound signal, and outputs the direct sound, early reflected sound, and reverberant sound from a corresponding speaker system (4). , direct sound at the performance venue,
an atmospheric sound sound source (4) storing an atmospheric sound signal corresponding to atmospheric sounds other than early reflected sounds and reverberant sounds in a format corresponding to direct sounds, early reflected sounds and reverberant sounds, or in a format compatible with the speaker system (4); 1), and a mixing means (3) for mixing a direct sound signal, an early reflected sound signal, a reverberation sound signal, and an atmospheric sound signal.
【請求項2】  該雰囲気音用音源(1)は、音場制御
装置において選択可能な音場に対応した複数種類の雰囲
気音信号を記憶しており、音場の選択に応じて自動的に
雰囲気音が定められることを特徴とする請求項1に記載
の音場制御装置。
[Claim 2] The atmospheric sound sound source (1) stores a plurality of types of atmospheric sound signals corresponding to sound fields that can be selected in the sound field control device, and automatically generates a sound field according to the selection of the sound field. The sound field control device according to claim 1, wherein an atmospheric sound is defined.
【請求項3】  該音響信号の強度を検出するレベル検
出手段(7d)を更に備え、該ミキシング手段(3)は
該音響信号の強度が所定値以下の時にのみ該雰囲気音信
号を混ぜ合せることを特徴とする請求項1又は2のいず
れか1項に記載の音場制御装置。
3. The apparatus further comprises level detection means (7d) for detecting the intensity of the acoustic signal, and the mixing means (3) mixes the atmospheric sound signal only when the intensity of the acoustic signal is below a predetermined value. The sound field control device according to claim 1 or 2, characterized in that:
JP3041530A 1991-03-07 1991-03-07 Sound field controller Withdrawn JPH04278799A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3041530A JPH04278799A (en) 1991-03-07 1991-03-07 Sound field controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3041530A JPH04278799A (en) 1991-03-07 1991-03-07 Sound field controller

Publications (1)

Publication Number Publication Date
JPH04278799A true JPH04278799A (en) 1992-10-05

Family

ID=12610967

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3041530A Withdrawn JPH04278799A (en) 1991-03-07 1991-03-07 Sound field controller

Country Status (1)

Country Link
JP (1) JPH04278799A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5982902A (en) * 1994-05-31 1999-11-09 Nec Corporation System for generating atmospheric quasi-sound for audio performance
JP2011138151A (en) * 2011-02-15 2011-07-14 Sony Corp Voice signal processing method and sound field reproduction system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5982902A (en) * 1994-05-31 1999-11-09 Nec Corporation System for generating atmospheric quasi-sound for audio performance
JP2011138151A (en) * 2011-02-15 2011-07-14 Sony Corp Voice signal processing method and sound field reproduction system

Similar Documents

Publication Publication Date Title
JPH0623119Y2 (en) Surround stereo playback device
US7110550B2 (en) Sound system
JP2003005752A (en) Electronic musical instrument
JP4196509B2 (en) Sound field creation device
JP2956125B2 (en) Sound source information control device
JPH04278799A (en) Sound field controller
JPH08146957A (en) Sound device of electronic keyboard musical instrument
US5434923A (en) Acoustic apparatus
JP2882970B2 (en) Audio equipment
JPH0965496A (en) Acoustic controller
JP4867542B2 (en) Masking device
JPH0662486A (en) Acoustic reproducing device
JP4967916B2 (en) Signal processing device
US6399868B1 (en) Sound effect generator and audio system
JPH0638300A (en) Acoustic reproduction equipment
JP2891553B2 (en) Sound field control device
WO2010113328A1 (en) Audio output device
JPH0549099A (en) Sound field controller
Griesinger Reproducing low frequency spaciousness and envelopment in listening rooms
JP2001218300A (en) Sound filed display method and sound signal output device
JPH04341000A (en) Acoustic device
JPH06311600A (en) Image displacement control information generating system and acoustic system
JPH03268599A (en) Acoustic device
JP3718595B2 (en) Sound field playback device for electronic keyboard instruments
JPH07112319B2 (en) Audio signal processor

Legal Events

Date Code Title Description
A300 Application deemed to be withdrawn because no request for examination was validly filed

Free format text: JAPANESE INTERMEDIATE CODE: A300

Effective date: 19980514