JPS5487518A - Electronic musical instrument - Google Patents
Electronic musical instrumentInfo
- Publication number
- JPS5487518A JPS5487518A JP15608177A JP15608177A JPS5487518A JP S5487518 A JPS5487518 A JP S5487518A JP 15608177 A JP15608177 A JP 15608177A JP 15608177 A JP15608177 A JP 15608177A JP S5487518 A JPS5487518 A JP S5487518A
- Authority
- JP
- Japan
- Prior art keywords
- signals
- random signals
- random
- voltage control
- key
- 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.)
- Pending
Links
Landscapes
- Electrophonic Musical Instruments (AREA)
Abstract
PURPOSE: To produce musical tones of intricate and good modulation effects by generating periodic function signals based on random signals changing according to timings of key touch operations thereby modulation controlling the pitches, timbres, volumes, etc. of the musical tones.
CONSTITUTION: When the outputs of the output lines of a key switch circuit according to key touching invert, the random signals from a random signal generator 4 are held in a holding circuit 5 via OR circuit 2 and one-shot circuit 3. The holding voltages cause voltage control frequency oscillators 6, 10, 13, voltage control amplifiers 7, 11, 14, voltage control filter VCF 12 to make periodic function control operations based on the random signals. Hence, the amplitudes of the pitch signals having been pitch-changed by the periodic functions of the random signals by the generator 6 and amplifier 7 corresponding to key touching are further changed by the amplifier 15 according to the periodic functions of the random signals, whereby the performance by the rich musical tones having intricate modulation effects is accomplished.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15608177A JPS5487518A (en) | 1977-12-24 | 1977-12-24 | Electronic musical instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15608177A JPS5487518A (en) | 1977-12-24 | 1977-12-24 | Electronic musical instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5487518A true JPS5487518A (en) | 1979-07-12 |
Family
ID=15619872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15608177A Pending JPS5487518A (en) | 1977-12-24 | 1977-12-24 | Electronic musical instrument |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5487518A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6183597A (en) * | 1984-10-01 | 1986-04-28 | ロ−ランド株式会社 | Sound source circuit for electronic musical instrument |
| JPH02230196A (en) * | 1989-01-19 | 1990-09-12 | Yamaha Corp | Electronic musical instrument |
-
1977
- 1977-12-24 JP JP15608177A patent/JPS5487518A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6183597A (en) * | 1984-10-01 | 1986-04-28 | ロ−ランド株式会社 | Sound source circuit for electronic musical instrument |
| JPH0573032B2 (en) * | 1984-10-01 | 1993-10-13 | Roland Corp | |
| JPH02230196A (en) * | 1989-01-19 | 1990-09-12 | Yamaha Corp | Electronic musical instrument |
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