Digital noise generator for electronic musical instruments

Details Digital noise generator for electronic musical instruments Digital noise generator for electronic musical instruments

1980-02-22

1982-04-27

Malzahn, David H.

Boots, shoes, and leggings

84 101, G06F 1531, G10H 100

Patent

active

043274196

ABSTRACT:
In an electronic musical instrument apparatus is provided for generating a noise-like signal suitable as source for a variety of musical effects such as the imitation of percussive musical instruments. Noise-like signals of predetermined spectral shape are produced by adding values from a sinusoid table by means of an address control which is incremented randomly according to a decision rule. The decision rule is implemented by a comparison of stored constant values with random values generated by a white noise source. The generated noise-like signals are advantageously employed in digital electronic musical instruments.

REFERENCES:
patent: 3614399 (1971-10-01), Linz
patent: 3703727 (1972-11-01), Knowlton
patent: 4194427 (1980-03-01), Deutsch
patent: 4218748 (1980-08-01), Goodwin
Mitchell et al, "Table-Lookup Methods for Generating Arbitrary Random Numbers", IEEE Trans. on Computers, vol. C-26, No. 10, Oct. 1977, pp. 1006-1008.

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