Circuit for simulating reverberation in electronic organs

Details Circuit for simulating reverberation in electronic organs Circuit for simulating reverberation in electronic organs

1977-05-24

1979-12-04

Rubinson, Gene Z.

Music

Instruments

84 113, G10H 102

Patent

active

041765796

ABSTRACT:
In an electronic organ system having a plurality of tone generators one for each note to be sounded, and a time constant circuit for establishing first and second decay characteristics for each note, the first of which has a longer decay period than the second, a key-down detector for sensing the operated condition of any key of the keyboard, and a circuit operative in response to the key-down detector to cause the sounded notes to have the longer decay characteristic so long as any key of the keyboard is depressed and to cause the sounded notes to have the shorter decay characteristic when all keys are released, for producing a pseudo-reverberation effect.

REFERENCES:
patent: 3557297 (1971-01-01), Matsuura
patent: 3591702 (1971-07-01), Adachi
patent: 3651730 (1972-03-01), Adachi
patent: 3861263 (1975-01-01), Okudaira
patent: 3924505 (1975-12-01), Schrelongost
patent: 3971284 (1976-07-01), Schreier
patent: 4014238 (1977-03-01), Southard

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