JPS6137036Y2 - - Google Patents
Info
- Publication number
- JPS6137036Y2 JPS6137036Y2 JP7097679U JP7097679U JPS6137036Y2 JP S6137036 Y2 JPS6137036 Y2 JP S6137036Y2 JP 7097679 U JP7097679 U JP 7097679U JP 7097679 U JP7097679 U JP 7097679U JP S6137036 Y2 JPS6137036 Y2 JP S6137036Y2
- Authority
- JP
- Japan
- Prior art keywords
- musical tone
- tone signal
- peak
- point
- signal
- 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 6
- 230000003321 amplification Effects 0.000 claims 2
- 238000001514 detection method Methods 0.000 claims 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims 2
- 239000003990 capacitor Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
Description
【考案の詳細な説明】
この考案は、電子楽器の音色効果回路に関す
る。[Detailed Description of the Invention] This invention relates to a tone effect circuit for an electronic musical instrument.
楽音信号は、周波数を異にする複数の正弦波信
号に分けることができ、該各正弦波信号の周波数
がどのようであるかによつて該楽音信号の音色が
特徴づけられることはよく知られている。 It is well known that a musical tone signal can be divided into multiple sine wave signals with different frequencies, and that the timbre of the musical tone signal is characterized by the frequency of each sine wave signal. ing.
従来、電子楽器の音源信号としては分周して容
易に多数の音声信号が得られることから、矩形波
信号が用いられることが多い。しかし、矩形波に
は奇数次の高調波が含まれてはいるが、偶数次の
高調波を含まないので、音色づくりの面からいえ
ば正弦波を適宜組み合せることができる方が望ま
しい。 Conventionally, a rectangular wave signal is often used as a sound source signal for an electronic musical instrument because a large number of audio signals can be easily obtained by dividing the frequency. However, although rectangular waves contain odd-order harmonics, they do not contain even-order harmonics, so from the perspective of creating tone, it is desirable to be able to combine sine waves as appropriate.
しかし、正弦波を組合わせて任意の楽音信号を
合成するのには複雑な回路装置を必要としてい
た。 However, combining sine waves to synthesize arbitrary musical tone signals required complex circuitry.
本考案は任意の楽音信号を入力して、該楽音信
号のもつ周波数成分にその各２倍の周波数成分を
加えて出力することにより、上記偶数次の高調波
を付加することのできる比較的簡単な回路を提供
するものである。以下、図面を参照しながら本考
案について詳細に説明する。 The present invention is a relatively simple method that can add the above-mentioned even-order harmonics by inputting an arbitrary musical tone signal, adding twice the frequency components to each frequency component of the musical tone signal, and outputting the resultant frequency components. This provides a circuit with a wide range of functions. Hereinafter, the present invention will be described in detail with reference to the drawings.
第１図は本考案による効果回路の一実施例を示
す回路図である。 FIG. 1 is a circuit diagram showing an embodiment of an effect circuit according to the present invention.
切替スイツチS1，S2はそれぞれオフである図の
位置において、入力端子１より第２図２−１の如
き波形の楽音信号が入力されると、該波形の立上
りＰ点よりピークａまでの信号成分は増幅器２で
同相増幅されてＸ点に現われる。２−２図は該Ｘ
点の電圧値の変化を表わしたものであり、P′は２
−１図のＰ点に対応し、a′はａ点に対応する。該
Ｘ点の電圧は増幅器４と共にピークホールド回路
を構成している増幅器３を介してＹ点に出力され
るが、、該信号成分はダイオードd1，d2を介して
コンデンサC2に送り込まれて該コンデンサC2は
充電される。次に該楽音信号がピークａよりｂに
向いはじめると、ダイオードd1，d2が遮断状態と
なるので、上記コンデンサC2はピークａ点での
Ｘ点の電圧値a′にホールドされる。同時に、増幅
器３の２入力端子の負極性入力端子が正極性入力
端子より電位が高くなつてＹ点にパルスが発生
し、該パルスはコンデンサC1を介してトランジ
スタＱをオンとなしそれまでローレベルであつた
Ｚ点が一瞬間ハイレベルとなるため、切替スイツ
チS2がオンとなると共にフリツプフロツプ５も反
転動作をして切替スイツチS1もオンとなる。 When a musical tone signal having a waveform as shown in Fig . 2-1 is input from input terminal 1 at the positions shown in the figure in which the changeover switches S 1 and S 2 are in the OFF position, the signal from the rising point P of the waveform to the peak a is inputted from the input terminal 1. The signal component is in-phase amplified by the amplifier 2 and appears at the X point. Figure 2-2 shows the corresponding
It represents the change in voltage value at a point, and P' is 2
-1 corresponds to point P in figure 1, and a' corresponds to point a. The voltage at point X is output to point Y via amplifier 3, which together with amplifier 4 constitutes a peak hold circuit, but the signal component is sent to capacitor C 2 via diodes d 1 and d 2 . Then, the capacitor C2 is charged. Next, when the musical tone signal starts to move from peak a to peak b, diodes d 1 and d 2 are cut off, so that capacitor C 2 is held at the voltage value a' at point X at peak point a. At the same time, the negative polarity input terminal of the two input terminals of amplifier 3 becomes higher in potential than the positive polarity input terminal, and a pulse is generated at point Y. This pulse turns on transistor Q via capacitor C1 , and until then the voltage is low. Since the Z point, which was at the level, momentarily becomes the high level, the changeover switch S2 is turned on, the flip-flop 5 is also reversed, and the changeover switch S1 is also turned on.
従つて増幅器２はピークａ以後反転増幅器とし
て動作し、ピークａよりピークｂまでの信号成分
は該増幅器２を介して反転増幅されてＸ点に現わ
れるが、上記切替スイツチS2のオン時点において
コンデンサC2の電荷は放電されて該コンデンサ
C2の電位は反転したＸ点の電位a″に等しくなつ
ているので、以後は前記同様の経過によりコンデ
ンサC2が充電されてピークｂ点でのＸ点の電圧
値b′がホールドされる。 Therefore, amplifier 2 operates as an inverting amplifier after peak a, and the signal components from peak a to peak b are inverted and amplified through amplifier 2 and appear at point X. However, when the changeover switch S2 is turned on, the capacitor The charge on C2 is discharged and the capacitor
Since the potential of C 2 is equal to the inverted potential a'' at point .
次に楽音信号がピークｂによりピークｃに向い
はじめると、前記同様にしてＹ点にパルスが発生
し、切替スイツチS2がオフとなされ、同時にフリ
ツプフロツプ５が反転して切替スイツチS1もオフ
となされ、コンデンサC2は再び放電してb′が反転
されたＸ点の電位b″に等しくなる。つまり、ピ
ークｂ以後は同相増幅器に切替えられた増幅器２
の動作に従つてＸ点に現われる信号成分がコンデ
ンサC2に充電されて、ピークｃ点でのＸ点の電
圧値c′が該コンデンサC2にホールドされる。 Next, when the musical tone signal starts to move from peak b to peak c, a pulse is generated at point Y in the same manner as described above, switch S2 is turned off, and at the same time flip-flop 5 is reversed and switch S1 is also turned off. Then, the capacitor C2 is discharged again and becomes equal to the potential b'' at the point
According to the operation, the signal component appearing at the X point is charged into the capacitor C2 , and the voltage value c' at the X point at the peak point c is held in the capacitor C2 .
以後、上述の動作を繰り返すことによつて、Ｘ
点の電圧はc″からd′，d″，e′，e″と変化して２−
２図の如き波形の電圧変化を示す。 After that, by repeating the above operation,
The voltage at the point changes from c″ to d′, d″, e′, e″ and becomes 2−
Figure 2 shows the voltage change in the waveform.
従つて、出力端子６からは、入力端子１に入力
された２−１図の如き波形の楽音信号に対して２
−２図の如き出力楽音信号が得られる。即ち、入
力端子に入力された楽音信号の２倍の周波数の出
力楽音信号が得られるわけである。 Therefore, from the output terminal 6, the musical tone signal input to the input terminal 1 and having the waveform shown in Fig.
-2 An output musical tone signal as shown in Fig. 2 is obtained. That is, an output musical tone signal having twice the frequency of the musical tone signal inputted to the input terminal is obtained.
以上のように本考案による効果回路は比較的簡
単な回路構成でありながら、任意の楽音信号を入
力して、該楽音信号の周波数成分の２倍の周波数
成分を有する出力楽音信号を容易に得ることがで
き、該出力楽音信号は原入力楽音信号に加えるこ
とによつて該原入力楽音信号の音色を大きく変化
させることが可能であり、特に偶数次の高調波を
簡単に加えることができる実用性の高い効果回路
である。 As described above, although the effect circuit according to the present invention has a relatively simple circuit configuration, it can input an arbitrary musical tone signal and easily obtain an output musical tone signal having a frequency component twice that of the musical tone signal. By adding the output musical tone signal to the original input musical tone signal, it is possible to greatly change the timbre of the original input musical tone signal, and in particular, it is practical where even-order harmonics can be easily added. It is a highly effective circuit.
第１図は本考案による効果回路の一実施例を示
す回路図、第２図は該効果回路の動作説明に供す
る波形図である。
１……入力端子、２，３，４……増幅器、５…
…フリツプフロツプ、６……出力端子、S1，S2…
…切替スイツチ、Ｑ……トランジスタ、C1，C2
……コンデンサ、d1，d2……ダイオード、Ｘ，Ｙ
……回路中の点。
FIG. 1 is a circuit diagram showing an embodiment of an effect circuit according to the present invention, and FIG. 2 is a waveform diagram for explaining the operation of the effect circuit. 1...Input terminal, 2, 3, 4...Amplifier, 5...
...Flip-flop, 6...Output terminal, S 1 , S 2 ...
...Selector switch, Q...transistor, C 1 , C 2
... Capacitor, d 1 , d 2 ... Diode, X, Y
...A point in a circuit.
Claims (1)
に切替える切替手段を具備した増幅器と、該増幅
器の出力楽音信号の波形をピークホールドし該ピ
ーク検出パルスをリセツト用制御信号とするホー
ルドリセツト手段を備えたピークホールド回路
と、該検出パルスをトリガー信号として交互動作
をして上記切替手段を切替える制御信号を出力す
るフリツプフロツプとで構成され上記増幅器の出
力端子より上記入力楽音信号の周波数成分の２倍
の周波数成分を有する出力楽音信号を得ることを
特徴とした電子楽器の効果回路。 An amplifier that receives a musical tone signal as an input and is equipped with a switching means for switching between in-phase amplification or inverted amplification, and a hold reset means that peak-holds the waveform of the output musical tone signal of the amplifier and uses the peak detection pulse as a reset control signal. It is composed of a peak hold circuit and a flip-flop which operates alternately using the detection pulse as a trigger signal and outputs a control signal for switching the switching means. An effect circuit for an electronic musical instrument, characterized in that an output musical tone signal having a component is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7097679U JPS6137036Y2 (en) | 1979-05-25 | 1979-05-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7097679U JPS6137036Y2 (en) | 1979-05-25 | 1979-05-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55169590U JPS55169590U (en) | 1980-12-05 |
| JPS6137036Y2 true JPS6137036Y2 (en) | 1986-10-27 |
Family
ID=29304692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7097679U Expired JPS6137036Y2 (en) | 1979-05-25 | 1979-05-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6137036Y2 (en) |
-
1979
- 1979-05-25 JP JP7097679U patent/JPS6137036Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55169590U (en) | 1980-12-05 |
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