Electronic musical instrument

Details Electronic musical instrument Electronic musical instrument

1977-09-20

1979-12-04

Witkowski, Stanley J.

Music

Instruments

84 124, 84 126, 84DIG8, 84DIG22, G10H 102, G10H 500

Patent

active

041765761

ABSTRACT:
An electronic musical instrument in which a keyboard circuit generates scale tone voltage signals corresponding to depressed keys of a keyboard. Plural musical tone signal forming sections are connected respectively to plural output terminals of the keyboard circuit which has plural series-connected resistance circuits. Each of the resistance circuits has series-connected resistances which, in turn, are connected at one end to an electrical source. Key-switches are provided to move with the keys of the keyboard, and these key-switches are connected so that when plural keys are simultaneously depressed according to a chord, respective scale tone voltage signals corresponding to the respective keys are generated at respective connecting points of the resistances in the series-connected resistance circuits, and they may be respectively transmitted from the plural output terminals. A scale tone signal order changing circuit changes, in order, scale tone voltage signals obtained at the respective output terminals of the keyboard circuit, and applies them to respective musical tone signal forming sections. The signal order changing circuit is connected between the plural output terminals of the keyboard circuit and the plural musical tone forming sections.

REFERENCES:
patent: 3305620 (1967-02-01), Young
patent: 3617602 (1971-11-01), Kniepkamp
patent: 3929052 (1975-12-01), van der Wal

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