Electronic rhythm generator

Details Electronic rhythm generator Electronic rhythm generator

1979-08-27

1981-11-10

Truhe, J. V.

Music

Instruments

84 124, 84DIG12, G10H 140

Patent

active

042991544

ABSTRACT:
An electronic rhythm generator which comprises a large read only memory having a plurality of rhythm patterns and rhythm break patterns programmed therein, player operated selector switches for selecting a rhythm pattern and a break pattern, scanning circuitry for sequentially addressing the memory to read out the stored rhythm pattern, and, when the break circuitry is activated, reading out the break pattern in place of or in addition to the rhythm pattern. The rhythm generator is contained on a single monolithic integrated circuit chip with the pattern selection being accomplished by an external multiplexer driven by an internally generated scan word. The break activation circuitry automatically corrects for improper matching of a rhythmically incompatible rhythm pattern and break pattern by either ignoring the break command or substituting a compatible break pattern in place of the selected break pattern. Channel inhibit circuitry at the input and output of the memory permits selective playing of certain ones of the instrument channels during a rhythm break regardless of whether the break is generated internally of the chip or externally by means of a separate break generator.

REFERENCES:
patent: Re29144 (1977-03-01), Bunger
patent: 3629480 (1971-12-01), Harris
patent: 3646242 (1972-02-01), Okamoto
patent: 3743757 (1973-07-01), Okamoto
patent: 3763305 (1973-10-01), Nakada et al.
patent: 3764722 (1973-10-01), Southard
patent: 3803970 (1974-04-01), Hirano
patent: 3811003 (1974-05-01), Harris
patent: 3916750 (1975-11-01), Vetrecht
patent: 4058043 (1977-11-01), Shibahara
patent: 4089245 (1978-05-01), Dietrich
patent: 4207792 (1980-06-01), Hoskinson

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