Electronic musical instrument

Details Electronic musical instrument Electronic musical instrument

1981-11-13

1985-05-07

Isen, Forester W.

Music

Instruments

G10H 100

Patent

active

045150567

ABSTRACT:
An electronic musical instrument employs a novel technique to produce a musical sound. A major part of a musical sound producing section of the electronic musical instrument is constructed by digital circuitry which is well adapted for an LSI fabrication. The electronic musical instrument comprises a volume control means to digitally perform a volume control to increase or decrease a performance volume, a period counting means to count one cycle of a musical sound wave by a plurality of counting steps in order to form a musical sound wave under digital control, a period control means to control the period counting means in accordance with the scale represented by depressed performance key, and a means to instruct the rise and the fall of a musical sound wave by a value which is an integral multiple of a control value of the volume control means, for each block including a predetermined number of counting steps.

REFERENCES:
patent: 3515792 (1970-06-01), Deutsch
patent: 4005268 (1977-01-01), Canell et al.
patent: 4030395 (1977-06-01), Kugisawa
patent: 4079650 (1978-03-01), Deutsch et al.
patent: 4079673 (1978-03-01), Deutsch
patent: 4083285 (1978-04-01), Chibana
patent: 4105864 (1978-08-01), Berkovitz
patent: 4237343 (1980-12-01), Kurtin et al.
patent: 4257303 (1981-03-01), Nagai et al.

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