Electronic musical instrument

Details Electronic musical instrument Electronic musical instrument

1982-08-25

1985-02-12

Isen, Forester W.

Music

Instruments

84 101, 84 124, 84DIG4, G10H 306

Patent

active

044983646

ABSTRACT:
An electronic musical instrument in which a pair of frequency numbers consisting of a note frequency number corresponding to the pitch of each note and an auxiliary frequency number slightly different from the note frequency number are provided for each note. Only when it is detected that keys of the same note are simultaneously depressed on at least two keyboards, musical waveform signals of slightly different pitches are produced. When keys of different notes are depressed on the individual keyboards, musical sounds of standard pitches can be produced, and only when keys of the same note are concurrently depressed on the individual keyboards, the slightly different frequency numbers are selected, by which variations in the volume of the composite musical sound can be made unnoticeable.

REFERENCES:
patent: 3854365 (1974-12-01), Tomisawa et al.
patent: 4184403 (1980-01-01), Whitefield
patent: 4215616 (1980-08-01), Gross

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