JPS62164397U - - Google Patents
Info
- Publication number
- JPS62164397U JPS62164397U JP4014587U JP4014587U JPS62164397U JP S62164397 U JPS62164397 U JP S62164397U JP 4014587 U JP4014587 U JP 4014587U JP 4014587 U JP4014587 U JP 4014587U JP S62164397 U JPS62164397 U JP S62164397U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- pulse
- pitch
- capacitor
- 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.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 claims 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000007599 discharging Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 1
Description
第１図は自然楽器におけるエンベロープ波形を
示す図、第２図は従来の電子楽器におけるエンベ
ロープ信号形成回路近辺の構成図、第３図は本考
案第１実施例の構成を示すブロツク図、第４図は
第３図の部分的詳細図、第５図は第４図の動作説
明図、第６図は本考案の第２実施例の構成を示す
図である。
ＴＧ……楽音信号源、ＶＣＡ……電圧制御型増
幅器、ＥＶＰ……エンベロープ信号形成回路、Ｔ
ＨＧ……音高電圧発生回路、ＶＣＯ……電圧制御
型発振器、ＰＳＧ……パルス発生回路、ＰＫＣ…
…押鍵信号変換回路、ＬＧＣ……論理積演算回路
。
FIG. 1 is a diagram showing an envelope waveform in a natural musical instrument, FIG. 2 is a block diagram of the vicinity of the envelope signal forming circuit in a conventional electronic musical instrument, FIG. 3 is a block diagram showing the configuration of the first embodiment of the present invention, and FIG. 3 is a partial detailed view of FIG. 3, FIG. 5 is an explanatory diagram of the operation of FIG. 4, and FIG. 6 is a diagram showing the configuration of a second embodiment of the present invention. TG...musical tone signal source, VCA...voltage controlled amplifier, EVP...envelope signal forming circuit, T
HG...Tone high voltage generation circuit, VCO...Voltage controlled oscillator, PSG...Pulse generation circuit, PKC...
...Key press signal conversion circuit, LGC...Logic product operation circuit.
Claims (1)
信号とを出力する回路ＴＨＧと、 該音高信号を増幅する増幅器ＶＣＡと、 前記打鍵信号と音高信号とによつてエンベロー
プ信号波形を形成し、 該エンベロープ信号波形により前記増幅器ＶＣ
Ａを制御する制御回路、 とを具備し、 前記制御回路は、 前記打鍵信号によつて充電されるコンデンサＣ
と、 前記音高信号を該音高信号と同一周波数の一定
幅パルスに変換して出力するパルス発生回路ＰＳ
Ｇと、 該パルス発生回路ＰＳＧの出力パルスによつて
前記フンデンサＣを放電させ、該コンデンサＣの
充放電変化をエンベロープ信号波形とする回路、 とから成ることを特徴とする電子楽器のエンベロ
ープ信号波形形成回路。[Claims for Utility Model Registration] A circuit THG that outputs a keystroke signal and a pitch signal of a frequency corresponding to the pressed key; an amplifier VCA that amplifies the pitch signal; and an amplifier VCA that amplifies the pitch signal; Accordingly, an envelope signal waveform is formed, and the amplifier VC is controlled by the envelope signal waveform.
A control circuit that controls a capacitor C that is charged by the keystroke signal.
and a pulse generation circuit PS that converts the pitch signal into a constant width pulse having the same frequency as the pitch signal and outputs the pulse.
An envelope signal waveform of an electronic musical instrument characterized by comprising: a circuit that discharges the capacitor C by an output pulse of the pulse generating circuit PSG and uses changes in charging and discharging of the capacitor C as an envelope signal waveform. formation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987040145U JPH0114075Y2 (en) | 1987-03-19 | 1987-03-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987040145U JPH0114075Y2 (en) | 1987-03-19 | 1987-03-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62164397U true JPS62164397U (en) | 1987-10-19 |
| JPH0114075Y2 JPH0114075Y2 (en) | 1989-04-25 |
Family
ID=30853967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987040145U Expired JPH0114075Y2 (en) | 1987-03-19 | 1987-03-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0114075Y2 (en) |
-
1987
- 1987-03-19 JP JP1987040145U patent/JPH0114075Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0114075Y2 (en) | 1989-04-25 |
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