Electronic musical instrument capable of generating a chorus sou

Details Electronic musical instrument capable of generating a chorus sou Electronic musical instrument capable of generating a chorus sou

1978-06-02

1980-10-21

Witkowski, Stanley J.

Music

Instruments

84DIG4, 84DIG11, G10H 102, G10H 506

Patent

active

042287170

ABSTRACT:
The disclosure describes improved apparatus for use in an electronic musical instrument having a keyboard including a group of keys corresponding to the notes of a musical scale. Electronic circuitry is used to generate simultaneously with respect to each of the keys first and second electrical tone signals, the repetition rates of which are detuned with respect to each other so that the sound of a chorus is simulated.
The disclosure also describes circuitry useful in an electronic musical instrument having a keyboard including twelve keys corresponding to the twelve notes of a chromatic musical scale. The circuitry generates simultaneously a first series of twelve tone signals corresponding to a first tempered scale and a second series of twelve tone signals corresponding to a second tempered scale different from the first tempered scale. Each time a key is actuated, a pair of tone signals, one from each of the first and second series, is mixed and converted to an acoustical wave in order to simulate a chorus effect.

REFERENCES:
patent: 3347973 (1967-10-01), Freeman
patent: 3450825 (1969-06-01), Cunningham
patent: 3764721 (1973-10-01), Maynard
patent: 3790693 (1974-02-01), Adachi
patent: 3800060 (1974-03-01), Hallman, Jr.
patent: 3816635 (1974-06-01), Uetrecht
patent: 3821460 (1974-06-01), Maynard
patent: 3828109 (1974-08-01), Morez
patent: 3939751 (1976-02-01), Harasek
patent: 3956961 (1976-05-01), Peterson
patent: 3978755 (1976-09-01), Woron
patent: 4056995 (1977-11-01), Uetrecht
patent: 4063484 (1977-12-01), Robinson

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