Tone generator for electronic musical instrument with digital gl

Details Tone generator for electronic musical instrument with digital gl Tone generator for electronic musical instrument with digital gl

1978-11-16

1980-04-22

Witkowski, S. J.

Music

Instruments

84 124, G10H 102, G10H 500

Patent

active

041988922

ABSTRACT:
A tone generator for use with an electronic musical instrument includes a binary counter operated by a binary comparator and a source of clock signals for incrementally advancing or decreasing the state of the counter from a first selected state to a second selected state. The states of the counter control a programmable divider which develops corresponding output tone signals. The counter produces multiple state changes between the selected states so that each individual state change results in a frequency change which is inaudible. The overall effect is to thereby synthesize a tone signal creating the illusion of a continuous pitch change between the pitches corresponding to the selected counter states. The source of clock signals includes a rate multiplier programmed according to the states of the counter to compensate system operation for insuring that similar musical effects defined by corresponding musical intervals are produced in equal time intervals. In a vibrato mode, a second rate multiplier is provided to insure that, for a given frequency output tone signal, different vibrato depths result in vibrato cycles of equal time intervals.

REFERENCES:
patent: 3929053 (1975-12-01), Deutsch
patent: 4070942 (1978-01-01), Aoki
patent: 4073209 (1978-02-01), Whittington et al.
patent: 4103581 (1978-08-01), Deutsch
patent: 4152966 (1979-05-01), Deutsch
RCA Solid State Division, DIGITAL INTEGRATED CIRCUITS, Application Note ICAN-6739, Sep. 1974. _
RCA COS/MOS INTEGRATED CIRCUITS DATA BOOK, Copyright 1977, pp. 227-230. _
ELECTRONOTES, vol. 6, No. 42, Aug. 5, 1974, pp. 1-11. _

Affiliated with

Also associated with

Rating

Tone generator for electronic musical instrument with digital gl does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tone generator for electronic musical instrument with digital gl, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tone generator for electronic musical instrument with digital gl will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1470216