Noise generator for a polyphonic tone synthesizer

Details Noise generator for a polyphonic tone synthesizer Noise generator for a polyphonic tone synthesizer

1979-11-19

1981-06-02

Witkowski, S. J.

Music

Instruments

84 124, G10H 108, G10H 500

Patent

active

042704308

ABSTRACT:
In an electronic musical instrument apparatus is provided for producing a noise-like signal suitable for a variety of musical effect such as the imitation of percussive musical instruments. A noise master data set is created repetitively and independently of tone generation by computing a Fourier algorithm using random values for the Fourier coefficients. The noise master data set is transferred to a noise tone register whose output is sequentially and repetitively read and converted to an analog noise signal. Formant circuitry is used to vary the noise signal's spectrum in a time variant manner and the frequency of an assigned variable frequency clock can be used to vary the spectral bandwidth of the output noise signal.

REFERENCES:
patent: 3247309 (1966-04-01), Campbell
patent: 3794748 (1974-02-01), Deutsch
patent: 4022098 (1977-05-01), Deutsch et al.
patent: 4026180 (1977-05-01), Tomisawa et al.
patent: 4067254 (1978-01-01), Deutsch et al.
patent: 4085644 (1978-04-01), Deutsch et al.
patent: 4194427 (1980-03-01), Deutsch
D. B. Keele, Jr., "The Design and Use of a Simple Pseudo Random Pink-Noise Generator", J. Audio Engineering Society, vol. 21, (Jan./Feb., 1973), pp. 33-41.

Affiliated with

Also associated with

Rating

Noise generator for a polyphonic tone synthesizer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Noise generator for a polyphonic tone synthesizer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Noise generator for a polyphonic tone synthesizer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1859569