Velocity sensitive keyer control circuit for an electronic music

Details Velocity sensitive keyer control circuit for an electronic music Velocity sensitive keyer control circuit for an electronic music

1981-06-15

1983-11-29

Isen, F. W.

Music

Instruments

84 126, 84 113, G10H 102

Patent

active

044174969

ABSTRACT:
A touch responsive envelope control system is provided for use in an electronic musical instrument having a multiplexed keyboard, a plurality of assignable tone generators, each being assignable to producing a single note of one or more notes corresponding to one or more actuated keys of the keyboard and a keyer associated with each tone generating means for keying the generated tone with controlled attack time and decay rate and a controllable peak amplitude. The touch responsive system comprises a peak amplitude control system responsive to the actuation of each key for keying the associated tone with a peak amplitude corresponding to the intensity of actuation thereof. The peak amplitude control system includes an encoding circuit responsive to the actuation of each actuated key for producing an encoded intensity signal corresponding to the intensity of actuation thereof and a decoding circuit responsive to each encoded intensity signal for producing a corresponding peak amplitude control signal. An assigning circuit is responsive to the assignment of a given tone generator to production of a note corresponding to an actuated key for assigning the corresponding peak amplitude control signal to the given tone generator for controlling the peak amplitude of the note keyed thereby in accordance with the intensity of actuation of the corresponding key.

REFERENCES:
patent: 4067253 (1978-01-01), Wheelwright et al.
patent: 4203337 (1980-05-01), Schwartz et al.
patent: 4299153 (1981-11-01), Hoskinson et al.
patent: 4344347 (1982-08-01), Faulkner

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