Play data detecting system for electronic musical instruments

Details Play data detecting system for electronic musical instruments Play data detecting system for electronic musical instruments

1985-01-24

1986-03-04

Witkowski, Stanley J.

Music

Instruments

Automatic

84 101, 84345, 340365S, G10H 118

Patent

active

045733902

ABSTRACT:
A play data detecting system for an electronic musical instrument in which in the case of multiplexing together and scanning note select signals from key switches and function select signals from tablet switches and analog volumes, these signals are divided into a plurality of scan blocks of different scan periods. For the tablet switches, a processing routine is executed twice in one cycle of a main routine in view of a required number of scan addresses and, for the analog volumes, the results of parallel processing are used once in one cycle. This permits high-speed processing of the key switches and low-speed processing of the tablet switches and the analog volumes with sampling periods fit for them, respectively.

REFERENCES:
patent: 4215619 (1980-08-01), Budelman et al.
patent: 4294155 (1981-10-01), Turner
patent: 4343216 (1982-08-01), Swain et al.

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