GB1236535A - Gate circuit for electronic musical instruments - Google Patents
Gate circuit for electronic musical instrumentsInfo
- Publication number
- GB1236535A GB1236535A GB4442/70A GB444270A GB1236535A GB 1236535 A GB1236535 A GB 1236535A GB 4442/70 A GB4442/70 A GB 4442/70A GB 444270 A GB444270 A GB 444270A GB 1236535 A GB1236535 A GB 1236535A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gating
- capacitor
- electronic musical
- musical instruments
- constant current
- 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
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H1/00—Details of electrophonic musical instruments
- G10H1/02—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos
- G10H1/04—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos by additional modulation
- G10H1/053—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos by additional modulation during execution only
- G10H1/057—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos by additional modulation during execution only by envelope-forming circuits
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Electronic Switches (AREA)
- Electrophonic Musical Instruments (AREA)
Abstract
1,236,535. Electrophonic musical instruments. HITACHI Ltd. 29 Jan., 1970 [5 Feb., 1969], No. 4442/70. Heading G5J. [Also in Division H3] A gating circuit adapted to provide a desired rise or fall slope in the output signal, for example for an electronic musical instrument, comprises two active elements Q1A, Q1B having the input signal applied to one at 1A, the output signal derived from the other at 3 and a common electrode connected to an active gating element Q3A to which the gating signal is applied through an envelope forming circuit. As shown, the two active elements Q1A, Q2A constitute a differential amplifier and the gating element constitutes a controllable constant current common emitter supply. When the key S is made the capacitor C2 charges to switch on the constant current at a desired rate. When the switch is opened the capacitor discharges through R6 at a rate which is controlled by the mark-to-space ratio of high frequency pulses applied to the base of Q4. A single capacitor circuit may serve for a plurality of gates (Fig. 2, not shown).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP44008148A JPS4919213B1 (en) | 1969-02-05 | 1969-02-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1236535A true GB1236535A (en) | 1971-06-23 |
Family
ID=11685210
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4442/70A Expired GB1236535A (en) | 1969-02-05 | 1970-01-29 | Gate circuit for electronic musical instruments |
Country Status (5)
Country | Link |
---|---|
US (1) | US3656008A (en) |
JP (1) | JPS4919213B1 (en) |
DE (1) | DE2004835C3 (en) |
FR (1) | FR2033851A5 (en) |
GB (1) | GB1236535A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4173916A (en) * | 1974-10-18 | 1979-11-13 | Matsushita Electric Industrial Co., Ltd. | Tone generator system for an electronic organ |
JPS5533747Y2 (en) * | 1975-04-14 | 1980-08-11 | ||
US3999149A (en) * | 1975-06-20 | 1976-12-21 | D. H. Baldwin Company | Modulation system |
JPS5279060U (en) * | 1975-12-11 | 1977-06-13 | ||
DE2917352C2 (en) * | 1979-04-28 | 1983-12-29 | Dr. Rainer Böhm GmbH & Co KG, 4950 Minden | Electronic organ |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2233317A (en) * | 1937-05-25 | 1941-02-25 | Philco Radio & Television Corp | Amplifier for television system |
US3078395A (en) * | 1960-04-04 | 1963-02-19 | Rca Corp | Bidirectional load current switching circuit |
US3288907A (en) * | 1962-05-07 | 1966-11-29 | Hammond Organ Co | Electronic musical instrument with delayed vibrato |
US3284713A (en) * | 1963-03-26 | 1966-11-08 | Motorola Inc | Emitter coupled high frequency amplifier |
US3429976A (en) * | 1966-05-11 | 1969-02-25 | Electro Voice | Electrical woodwind musical instrument having electronically produced sounds for accompaniment |
-
1969
- 1969-02-05 JP JP44008148A patent/JPS4919213B1/ja active Pending
-
1970
- 1970-01-26 US US5851A patent/US3656008A/en not_active Expired - Lifetime
- 1970-01-29 GB GB4442/70A patent/GB1236535A/en not_active Expired
- 1970-02-02 FR FR7003586A patent/FR2033851A5/fr not_active Expired
- 1970-02-03 DE DE2004835A patent/DE2004835C3/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2004835C3 (en) | 1974-06-20 |
FR2033851A5 (en) | 1970-12-04 |
JPS4919213B1 (en) | 1974-05-16 |
DE2004835A1 (en) | 1970-08-20 |
US3656008A (en) | 1972-04-11 |
DE2004835B2 (en) | 1973-10-31 |
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