Automatic accompaniment system for use with an electronic musica

Details Automatic accompaniment system for use with an electronic musica Automatic accompaniment system for use with an electronic musica

1974-08-13

1976-04-20

Hix, L. T.

Music

Instruments

84DIG12, G10H 100, G10H 506

Patent

active

039510298

ABSTRACT:
An automatic accompaniment system for use with an electronic musical instrument of a type having keyboard arrangements, which is capable of automatically sounding chords and basses in accordance with a predetermined rhythm of a selected music, the basses of which are each formed by some of tones forming each chord in the case where the right and left hands of a player are used to play the melody and an accompaniment, respectively. To this end, the system includes a counting circuit composed of a binary counter and a decoder, a high frequency pulse generator, a plurality of logical gating elements and a rhythm pulse generator. While outputs from the counting circuit correspond to respective tones of keys on the keyboard arrangement, counting of the number of high frequency pulses from the high frequency pulse generator is performed and this counting operation is stopped by the gating elements, when the outputs from the counting circuit and component tones of a chord formed coincide with each other, thereby permitting passage of tone signals from tone signal sources through the gating elements. This cycle of operation is repeated each time rhythm pulses are applied.

REFERENCES:
patent: 3548066 (1970-12-01), Freeman
patent: 3590129 (1971-06-01), Freeman
patent: 3711618 (1973-01-01), Freeman
patent: 3712950 (1973-01-01), Freeman
patent: 3715442 (1973-02-01), Freeman
patent: 3718748 (1973-02-01), Bunger
patent: 3725562 (1973-04-01), Munch, Jr. et al.
patent: 3825667 (1974-07-01), Schrecongost
patent: 3829592 (1974-10-01), Freeman
patent: 3842184 (1974-10-01), Kniepkamp et al.

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