Percussive voice generator for an electronic musical instrument

Details Percussive voice generator for an electronic musical instrument Percussive voice generator for an electronic musical instrument

1982-09-24

1984-12-25

Isen, Forester W.

Music

Instruments

84 101, G10H 106

Patent

active

044896379

ABSTRACT:
A keyboard operated electronic musical instrument in which a number of tone generators are assigned to actuated keyswitches in which a combination of a transient voice and a steady state tone is generated by implementing a discrete Fourier transform employing a selected sequence of harmonic coefficients. A harmonic sequence select logic in cooperation with signals from actuated tone switches provide the selected sequence of harmonic coefficients. A percussion coefficient is added to the sequence of harmonic coefficients in response to a percussion control signal. Various playing modes are disclosed. In one mode the transient voice is generated with the actuation of the first keyswitch on a selected keyboard, and other subsequent actuations are ignored. In a second mode, a transient voice is actuated if at the time of a keyswitch actuation no other transient voice is being generated.

REFERENCES:
patent: 3913442 (1975-10-01), Deutsch
patent: 4122742 (1978-10-01), Deutsch
patent: 4205577 (1980-06-01), Deutsch

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