JPS6239436Y2 - - Google Patents
Info
- Publication number
- JPS6239436Y2 JPS6239436Y2 JP10983980U JP10983980U JPS6239436Y2 JP S6239436 Y2 JPS6239436 Y2 JP S6239436Y2 JP 10983980 U JP10983980 U JP 10983980U JP 10983980 U JP10983980 U JP 10983980U JP S6239436 Y2 JPS6239436 Y2 JP S6239436Y2
- Authority
- JP
- Japan
- Prior art keywords
- reverberation
- time
- delay
- variable resistor
- oscillation frequency
- 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
Links
- 230000000694 effects Effects 0.000 claims description 11
- 230000010355 oscillation Effects 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000003111 delayed effect Effects 0.000 description 3
- 230000001755 vocal effect Effects 0.000 description 1
Landscapes
- Networks Using Active Elements (AREA)
Description
本考案は、アナログ遅延素子を使用した残響効
果付加装置に関するもので、遅延時間を可変した
場合、遅延時間の長さに関係なく残響時間をほぼ
一定に保ち、適正な残響効果を得ることを目的と
する。
第４図に従来の残響付加装置の構成を示す。入
力信号１は増幅器２を経て端子３に達し、ここで
抵抗９を介して直接出力へ行くものと、増幅器４
を経て遅延回路５の入力となるものに分かれる。
直接出力端子１４に現われる信号のレベルをe0と
する。次に遅延回路５ハイカツトフイルター６増
幅器７を経て、出力端子１４に現われる信号のレ
ベルをe1とする。更に第１回目の遅延信号を端子
１５から抵抗１０，１７，１８によつて遅延回路
５の入力に帰還させ、遅延回路５ハイカツトフイ
ルター６、増幅器７を経て出力端子１４に現われ
る信号のレベルをe2とする。同様にして第３回
目、第４回目…の遅延信号レベルをe3，e4とする
とｅo＝αn-1e1（α＜１）の関係がある。α＜１
であるため
This invention relates to a reverberation effect adding device using an analog delay element.The purpose of this invention is to keep the reverberation time almost constant regardless of the length of the delay time and obtain an appropriate reverberation effect when the delay time is varied. shall be. FIG. 4 shows the configuration of a conventional reverberation adding device. The input signal 1 passes through an amplifier 2 and reaches a terminal 3, where it passes through a resistor 9 directly to the output, and an amplifier 4.
The signal is then divided into those that serve as inputs to the delay circuit 5.
Let the level of the signal appearing at the direct output terminal 14 be e 0 . Next, the level of the signal appearing at the output terminal 14 after passing through the delay circuit 5, high-cut filter 6, and amplifier 7 is set to e1 . Furthermore, the first delayed signal is fed back from the terminal 15 to the input of the delay circuit 5 through resistors 10, 17, and 18, and the level of the signal appearing at the output terminal 14 after passing through the delay circuit 5, high-cut filter 6, and amplifier 7 is adjusted. Let it be e 2 . Similarly, if the delayed signal levels of the third, fourth, etc. are e 3 , e 4 , there is a relationship e o =α n-1 e 1 (α<1). α<1
Because it is
【式】となり、聴感上、遅延信号
が消滅するまでの時間Teを残響時間と呼ぶこと
にする。又遅延回路の入力と出力の時間差Tdを
遅延時間と呼び、アナログ遅延素子では
Td＝Ｍ／２Ｃ
（Ｍ：アナログ遅延素子の段数
C：クロツク発振器８の発振周波数）
で表わされる。尚１３はクロツク発振器８を可変
する可変抵抗器である。
従来の残響効果付加装置は帰還量αが一定のた
め遅延時間を変化させるとそれに追従して残響時
間も変化するという不都合を有している。第５図
第６図に、それぞれ遅延時間がTd1，Td2のとき
の残響時間Te1，Te2を示す。横軸は時間Ｔ、縦
軸は端子１５の電圧レベルＶLを示す。仮にTd1
≒2Td2とするとTe1≒2Te2となり、遅延時間の長
い方が聴感上残響効果大と感じる。
本考案は上記の問題に対処したもので、クロツ
ク発振器８の発振周波数を可変する可変抵抗器１
３は、帰還量αを可変する可変抵抗器１６と連動
している。第２図、第３図にそれぞれ遅延時間が
Td1，Td2のときの残響時間Te1，Te2を示す。仮
にTd2≒1/2Td1としTe2≒Te1となるような回路
定数を設定すれば、クロツク発振周波数の変化、
即ち遅延時間の変化に関係なく残響時間は一定に
保たれることになる。
本考案は上記のように遅延時間を変化させても
残響時間をほぼ一定の適正値に保つことができ
る。残響効果付加装置はカラオケ装置に多用され
ており、通常ボーカル信号に残響効果を付加する
が、遅延素子の遅延時間を変化させることにより
残響効果音の音質を変化させることができる。し
かしながら残響時間に関しては短いと残響効果が
少ないと感じ、また長すぎると極めて不自然な残
響効果となるので適正値というものが存在する。
従つて、遅延時間を変化させて残響効果音の音質
や雰囲気を変えることができ、かつ残響時間は長
くもなく短くもない適正値にほぼ一定に保つこと
のできる本考案の効果は極めて大きいものであ
る。[Formula], and the time Te required for the delayed signal to disappear in terms of hearing is called the reverberation time. The time difference Td between the input and output of the delay circuit is called delay time, and in the case of an analog delay element, it is expressed as Td=M/2 C (M: number of stages of the analog delay element C : oscillation frequency of the clock oscillator 8). Note that 13 is a variable resistor for varying the clock oscillator 8. Conventional reverberation effect adding devices have the disadvantage that since the amount of feedback α is constant, when the delay time is changed, the reverberation time also changes accordingly. 5 and 6 show the reverberation times Te 1 and Te 2 when the delay times are Td 1 and Td 2 , respectively. The horizontal axis shows time T, and the vertical axis shows the voltage level V L of terminal 15. If Td 1
If ≒2Td 2 , then Te 1 ≒2Te 2 , and the longer the delay time, the greater the reverberation effect is felt. The present invention addresses the above-mentioned problems, and includes a variable resistor 1 that varies the oscillation frequency of the clock oscillator 8.
3 is interlocked with a variable resistor 16 that varies the amount of feedback α. Figures 2 and 3 show the delay times, respectively.
The reverberation times Te 1 and Te 2 at Td 1 and Td 2 are shown. If we set the circuit constants such that Td 2 ≒ 1/2Td 1 and Te 2 ≒ Te 1 , the change in the clock oscillation frequency,
That is, the reverberation time is kept constant regardless of changes in the delay time. The present invention can maintain the reverberation time at a substantially constant appropriate value even if the delay time is changed as described above. Reverberation effect adding devices are often used in karaoke devices, and usually add a reverberation effect to a vocal signal, but by changing the delay time of a delay element, the sound quality of the reverberation effect sound can be changed. However, when it comes to reverberation time, there is an appropriate value because if it is too short, the reverberation effect will be felt to be small, and if it is too long, the reverberation effect will be extremely unnatural.
Therefore, the effect of the present invention is extremely large, since it is possible to change the sound quality and atmosphere of the reverberant sound by changing the delay time, while also keeping the reverberation time almost constant at an appropriate value that is neither too long nor too short. It is.
第１図は本考案装置のブロツク図、第２図、第
３図は本考案における遅延時間と残響時間との特
性図、第４図は従来装置のブロツク図、第５図、
第６図は従来の遅延時間と残響時間との特性図。
５……遅延回路、８……クロツク発振器、１３
……クロツク発振周波数可変用の可変抵抗器、１
６……帰還量可変用の可変抵抗器。
FIG. 1 is a block diagram of the device of the present invention, FIGS. 2 and 3 are characteristic diagrams of delay time and reverberation time in the present invention, FIG. 4 is a block diagram of the conventional device, and FIG.
FIG. 6 is a characteristic diagram of conventional delay time and reverberation time. 5...Delay circuit, 8...Clock oscillator, 13
...variable resistor for varying clock oscillation frequency, 1
6...Variable resistor for varying the amount of feedback.
Claims (1)
振周波数を可変するための可変抵抗器と、遅延回
路の出力から入力への帰還量を可変する可変抵抗
器とを連動とし、上記クロツク発振器の発振周波
数を上げるように操作した場合、これに対応して
遅延回路の出力から入力への帰還量が増加する回
路を設けたことを特徴とする残響効果付加装置。 A variable resistor for varying the oscillation frequency of the clock oscillator for driving the analog delay element and a variable resistor for varying the amount of feedback from the output of the delay circuit to the input are linked together to increase the oscillation frequency of the clock oscillator. 1. A reverberation effect adding device characterized by being provided with a circuit that increases the amount of feedback from the output of the delay circuit to the input in response to this operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10983980U JPS6239436Y2 (en) | 1980-08-01 | 1980-08-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10983980U JPS6239436Y2 (en) | 1980-08-01 | 1980-08-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5732998U JPS5732998U (en) | 1982-02-20 |
| JPS6239436Y2 true JPS6239436Y2 (en) | 1987-10-07 |
Family
ID=29471008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10983980U Expired JPS6239436Y2 (en) | 1980-08-01 | 1980-08-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6239436Y2 (en) |
-
1980
- 1980-08-01 JP JP10983980U patent/JPS6239436Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5732998U (en) | 1982-02-20 |
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