Electronic musical instrument under control of multiple task req

Details Electronic musical instrument under control of multiple task req Electronic musical instrument under control of multiple task req

1993-03-03

1996-01-02

Shoop, Jr., William M.

Music

Instruments

Electrical musical tone generation

84622, G10H 502

Patent

active

054810671

ABSTRACT:
An electronic musical instrument having a plurality of first operation elements arranged to be operated for designating a tone pitch of a musical tone to be produced, a plurality of second operation elements arranged to be operated for selecting a tone color of the musical tone, and a musical tone signal production circuit to be applied with a first data indicative of operation of the first operation elements and a second data indicative of operation of the second operation elements, wherein a timer-interrupt signal is generated at a predetermined time interval, a first task requirement flag for processing the first data is set in response to the timer-interrupt signal, and a second task requirement flag for processing the second data is set at each time when the first task requirement flag is plural times, and wherein the first data is applied to the musical tone signal production circuit in dependence upon the first task requirement flag, and the second data is applied to the musical tone signal production circuit in dependence upon the second task requirement flag.

REFERENCES:
patent: 4922796 (1990-05-01), Kondo et al.
patent: 5040448 (1991-08-01), Matsubara et al.
patent: 5270477 (1993-12-01), Kawashima
patent: 5280129 (1994-01-01), Yamamori et al.
patent: 5340938 (1994-08-01), Sugita et al.

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