Electronic musical instrument of key code processing type

Details Electronic musical instrument of key code processing type Electronic musical instrument of key code processing type

1978-12-21

1980-08-26

Witkowski, S. J.

Music

Instruments

84DIG2, 84DIG20, G10H 100, G10H 500

Patent

active

042189489

ABSTRACT:
An electronic musical instrument of a key code processing type includes a single tone generating section for producing a solo performance effect without providing a solo performance keyboard. This single tone generating section comprises a single data selection circuit which selects the highest (or lowest) note from among notes of depressed keys for producing a single musical tone. The single data selection circuit includes first and second memories and a comparison circuit. An input key code A is compared with a key code X stored in the second memory and the input key code A is stored in the first memory if the value of the input key code A is greater than the value of the key code X. When one cycle of the above described comparison has been completed, the data stored in the second memory is rewritten with the data of the first memory. The key code for the highest note is now stored in the second memory to designate a tone signal to be produced for a solo performance.

REFERENCES:
patent: 3743755 (1973-07-01), Watson
patent: 4074233 (1978-02-01), Swain
patent: 4077293 (1978-03-01), Uchiyama
patent: 4122744 (1978-10-01), Uetrecht
patent: 4138916 (1979-02-01), Kitagawa
patent: 4141268 (1979-02-01), Kugisawa
patent: 4170160 (1979-10-01), Guo
patent: 4170768 (1979-10-01), Kitagawa

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