JPH062400Y2 - Sound addition device - Google Patents
Sound addition deviceInfo
- Publication number
- JPH062400Y2 JPH062400Y2 JP1984014707U JP1470784U JPH062400Y2 JP H062400 Y2 JPH062400 Y2 JP H062400Y2 JP 1984014707 U JP1984014707 U JP 1984014707U JP 1470784 U JP1470784 U JP 1470784U JP H062400 Y2 JPH062400 Y2 JP H062400Y2
- Authority
- JP
- Japan
- Prior art keywords
- level
- sound
- signal
- delay
- delay time
- 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.)
- Expired - Lifetime
Links
Description
【考案の詳細な説明】 （技術分野） この考案は音響付加装置に関し、特にステレオ信号に対
して拡がり感、臨場感を付加するようにした装置に関す
るものである。TECHNICAL FIELD The present invention relates to a sound adding device, and more particularly to a device for adding a sense of spaciousness and presence to a stereo signal.
（背景技術） 第１図は従来の音響付加装置の構成例であり、これは、
Ｌ，Ｒのステレオ信号から、第１、第２の減算回路１，
１により共に同一位相の差信号としていずれも（Ｌ−
Ｒ）を得て、それぞれ第１、第２の遅延回路２，２によ
り遅延をかけ、２系統のサラウンド出力ＳＵＲＲＯＵＮ
Ｄ Ｌ，Ｒを出力する。(Background Art) FIG. 1 is a configuration example of a conventional sound adding device.
From the L and R stereo signals, first and second subtraction circuits 1,
1 as a difference signal having the same phase (L-
R) is obtained and delayed by the first and second delay circuits 2 and 2, respectively, and two systems of surround output SURROUN are provided.
Output D L, R.
かかる構成によれば、十分な拡がり感、臨場感は得られ
るものの、サラウンド出力のレベルは常に同一であり、
従って遅延回路の周波数特性の差や、先に耳にとどいた
信号の方に音像が定位する人間の耳の特性によって、遅
延時間の短かい方の音が耳についてしまうという不都合
が生じている。With such a configuration, although the spaciousness and the realism can be obtained, the surround output level is always the same,
Therefore, due to the difference in the frequency characteristics of the delay circuits and the characteristics of the human ear in which the sound image is localized to the signal that has reached the ear in advance, there is an inconvenience that the sound with the shorter delay time is heard.
（考案の概要） そこでこの考案は叙上の如き不都合を改善するべく成さ
れたものであって、自然な拡がり感のあるサラウンド効
果を得るようにした音響付加装置を提供するものであ
る。(Summary of the Invention) Therefore, the present invention has been made in order to improve the above-mentioned inconvenience, and provides a sound addition device capable of obtaining a surround effect with a natural spread feeling.
（実施例） 以下にこの考案の実施例を図と共に説明する。第２図に
おいて、第１及び第２の遅延回路２，２の出力を、それ
ぞれの系統において差信号成分のレベルを制御する制御
手段としての増幅器３，３を通してサラウンド出力とす
る。このとき、遅延回路２，２のうち遅延時間の大きい
方の増幅器３は遅延時間の小さい方の増幅器３よりも増
幅度を聴感上、音像の片寄りを補正する所定量大きくな
るように設定する。(Embodiment) An embodiment of the present invention will be described below with reference to the drawings. In FIG. 2, the outputs of the first and second delay circuits 2 and 2 are made surround outputs through amplifiers 3 which serve as control means for controlling the level of the difference signal component in each system. At this time, of the delay circuits 2 and 2, the amplifier 3 having the longer delay time is set to have a larger amplification degree than the amplifier 3 having the smaller delay time by a predetermined amount for audibly correcting the deviation of the sound image. .
また、遅延回路２，２のうち、周波数特性の狭い系統
に、周波数特性の広い系統よりも増幅度が所定量大きい
増幅器３を接続することにより、聴感上のサラウンド
Ｌ，Ｒ信号のレベルのバラツキを抑制して平坦にし、自
然な拡がり感を損なわないようにする。Further, by connecting the amplifier 3 having a predetermined amount of amplification larger than that of the system having wide frequency characteristics to the system having narrow frequency characteristics of the delay circuits 2 and 2, variations in the levels of the surround L and R signals in the sense of hearing. To prevent it from becoming flat so that it does not impair the natural spread.
尚、第２図の実施例では増幅器３，３は遅延回路２，２
の後段に接続したが、前後、もしくは減算回路１，１に
可変抵抗器を設けてもよい。In the embodiment shown in FIG. 2, the amplifiers 3 and 3 are delay circuits 2 and 2.
Although it is connected to the latter stage, variable resistors may be provided before and after or in the subtraction circuits 1 and 1.
更に増幅器の他にＶＣＡ（電圧可変型減衰器）などの他
のレベル制御手段を設けてもよい。Further, other level control means such as VCA (voltage variable attenuator) may be provided in addition to the amplifier.
（効果） 以上のようにこの考案によれば、遅延回路の周波数特性
や人間の耳の特性などを補正するようにサラウンド（差
信号）のＬ，Ｒのレベルを設定できるようにしたので、
片方のチャンネルに音像が片寄ってしまうことがなく、
自然な拡がり感のある音場を作ることができる。(Effect) As described above, according to the present invention, the L and R levels of the surround (difference signal) can be set so as to correct the frequency characteristic of the delay circuit and the characteristic of the human ear.
The sound image will not be biased to one channel,
It is possible to create a sound field with a natural expansive feel.
また、かかる補正を行なったうえで、更に同一レベルだ
けレベルを上げることにより、フロントのＬ，Ｒに比較
してサラウンド音（サラウンドＬ，Ｒ）を大きくして、
サラウンド効果をより強調することができる。In addition, after performing such correction, by further increasing the level by the same level, the surround sound (surround L, R) is increased compared to the front L, R,
The surround effect can be emphasized more.
第１図は従来の装置を示す図、第２図は本考案の実施例
を示す図である。 １……減算回路 ２……遅延回路 ３……増幅器FIG. 1 is a view showing a conventional device, and FIG. 2 is a view showing an embodiment of the present invention. 1 ... Subtraction circuit 2 ... Delay circuit 3 ... Amplifier
フロントページの続き (56)参考文献 特公 昭49−48962（ＪＰ，Ｂ１) 実公 昭50−44722（ＪＰ，Ｙ１)Continuation of the front page (56) References Japanese Patent Publication Sho 49-48962 (JP, B1) Actual Publication 50-44722 (JP, Y1)
Claims (1)
号成分を特性の異なる第１及び第２の遅延回路にそれぞ
れ通して２系統に出力し、前記ステレオ信号に付加する
ようにした音響付加装置であって、前記２系統中に前記
差信号成分のレベルを制御するレベル制御手段をそれぞ
れ設け、前記遅延回路の遅延時間の大きい方のレベルが
遅延時間の小さい方のレベルよりも所定量大きくなって
いて、聴感上、先に耳にとどいた信号の方に音像が片寄
らないように補正されていることを特徴とする音響付加
装置。1. An audio system in which differential signal components of L and R stereo signals having the same phase are respectively output to two systems through first and second delay circuits having different characteristics and added to the stereo signal. As an additional device, level control means for controlling the level of the difference signal component is provided in each of the two systems, and the level of the delay circuit having the longer delay time is a predetermined amount than the level of the smaller delay time. A sound addition device characterized in that the sound image is large and is corrected so that the sound image is not biased toward the signal that first reaches the ear in terms of hearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984014707U JPH062400Y2 (en) | 1984-02-02 | 1984-02-02 | Sound addition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984014707U JPH062400Y2 (en) | 1984-02-02 | 1984-02-02 | Sound addition device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60127100U JPS60127100U (en) | 1985-08-27 |
| JPH062400Y2 true JPH062400Y2 (en) | 1994-01-19 |
Family
ID=30499874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984014707U Expired - Lifetime JPH062400Y2 (en) | 1984-02-02 | 1984-02-02 | Sound addition device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH062400Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2667228B2 (en) * | 1988-11-07 | 1997-10-27 | 株式会社日立製作所 | Stereo reproduction device for television receiver |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3777787A (en) * | 1972-06-14 | 1973-12-11 | Rockwell International Corp | Weft carrier tape guide |
| JPS5243451Y2 (en) * | 1973-08-22 | 1977-10-03 |
-
1984
- 1984-02-02 JP JP1984014707U patent/JPH062400Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60127100U (en) | 1985-08-27 |
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