JPS54146626A - Electronic musical instrument - Google Patents
Electronic musical instrumentInfo
- Publication number
- JPS54146626A JPS54146626A JP5403578A JP5403578A JPS54146626A JP S54146626 A JPS54146626 A JP S54146626A JP 5403578 A JP5403578 A JP 5403578A JP 5403578 A JP5403578 A JP 5403578A JP S54146626 A JPS54146626 A JP S54146626A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- voltage
- sound source
- envelope
- 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
Landscapes
- Electrophonic Musical Instruments (AREA)
Abstract
PURPOSE: To obtain the so-called slow-attack effect by the simple composition of a circuit, by directly operating a sound source signal keying circuit by the output voltage of a wave-from forming circuit.
CONSTITUTION: When a signal e is fed to a terminal 8a of a wave-form forming circuit 8, a trnsistor Tr Q is in ON and a condenser C discharges, and the electric potential of a collector lowers to voltage V decided by means of a resistance R' connected to an emitter from the maximum value of key voltage by means of a power source Vcc, discharges ina time constant by a resistance R and the comdenser C and is changed into a signal f. The signal f is fed to an OR circuit 5 as key voltage through a switch K1 made while being supplied to a sound source signal keying circuit 21, and a conduction condition of a Tr constituting the circuit 21 is controlled in response to the magnitude of an envelope of the signal f. Thus, a signal with frequency corresponding to a sound selected by means of the switch K1 from a sound source signal circuit 31 is extracted as a signal g in response to the envelope of the signal f, and the mean value is detected by means of a condenser C0 and put out from a terminal 7 after it is converted into a slow-atack signal h.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53054035A JPS5836917B2 (en) | 1978-05-09 | 1978-05-09 | electronic musical instruments |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53054035A JPS5836917B2 (en) | 1978-05-09 | 1978-05-09 | electronic musical instruments |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54146626A true JPS54146626A (en) | 1979-11-16 |
JPS5836917B2 JPS5836917B2 (en) | 1983-08-12 |
Family
ID=12959322
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53054035A Expired JPS5836917B2 (en) | 1978-05-09 | 1978-05-09 | electronic musical instruments |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5836917B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0553816U (en) * | 1991-12-28 | 1993-07-20 | 豊本 博充 | Fluid pressure chuck |
-
1978
- 1978-05-09 JP JP53054035A patent/JPS5836917B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0553816U (en) * | 1991-12-28 | 1993-07-20 | 豊本 博充 | Fluid pressure chuck |
Also Published As
Publication number | Publication date |
---|---|
JPS5836917B2 (en) | 1983-08-12 |
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