Musical note oscillator

Details Musical note oscillator Musical note oscillator

1977-06-06

1978-08-22

Dobeck, B.

Music

Instruments

84 103, 84DIG7, G01F 100

Patent

active

041080351

ABSTRACT:
The disclosure describes an improved digital oscillator for use in an electronic musical system capable of converting electrical tone signals into corresponding sound waves. The oscillator includes an adder, accumulator and multiplexer for selectively transmitting either a divisor number or increment number to the adder. The oscillator cyclically performs incrementing operations by using the increment number over a variable range established by the divisor number at the beginning of each cycle. When the modulus of the adder is exceeded, the adder generates a carry pulse and a remainder. The divisor is then added to the remainder before the incrementing operations begin again. A digital calculator automatically calculates the proper values of the increment and divisor numbers so that the carry pulses occur at a predetermined frequency.

REFERENCES:
patent: 3626350 (1971-12-01), Suzuki
patent: 4023454 (1977-05-01), Obayashi
patent: 4043240 (1977-08-01), Ando

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