Musical tone generator system using multiple frequency synthesiz

Details Musical tone generator system using multiple frequency synthesiz Musical tone generator system using multiple frequency synthesiz

1977-08-25

1981-01-06

Witkowski, Stanley J.

Music

Instruments

84 124, 84DIG4, G10H 110, G10H 500

Patent

active

042429358

ABSTRACT:
For generating tones in an electronic musical instrument, there are provided multiple master frequency sources, a different source for each octave, differing in frequency from each other by a factor which differs from two by at least one semitone, each of which is coupled to a respective frequency synthesizer all of which have the same dividing ratios, to divide down the frequency of its master frequency source to pitches of the twelve notes in the intended octave. In one embodiment the sources are separate master clock pulse sources, and in another embodiment a pulse train derived from a single clock pulse source is applied to the frequency synthesizer for the highest octave, and the pulse train applied to each of the other synthesizers is derived from the pulse train supplied to the frequency synthesizer for the next highest octave by dividing the pulse repetition frequency thereof by a factor which differs from two by one or more semitones. The result is that temperament errors are randomized by placing them at different interval locations in each octave, and corresponding musical tones of successive octaves are not locked in phase relationship but have frequencies which differ slightly from pure harmonics, so as to present a pleasant chorus effect when such tones are reproduced simultaneously.

REFERENCES:
patent: 3795754 (1974-03-01), Mochida
patent: 3809787 (1974-05-01), Mochida
patent: 3828109 (1974-08-01), Morez
patent: 4056995 (1977-11-01), Uetrecht

Affiliated with

Also associated with

Rating

Musical tone generator system using multiple frequency synthesiz does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Musical tone generator system using multiple frequency synthesiz, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Musical tone generator system using multiple frequency synthesiz will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-279846