Digitally shaped noise generating system

Details Digitally shaped noise generating system Digitally shaped noise generating system

1977-01-05

1978-11-14

Smith, Jerry

Boots, shoes, and leggings

179 15A, 179 15M, 364724, G06F 1534, G10L 108

Patent

active

041258983

ABSTRACT:
This invention relates to a high-speed acoustic noise generating system that is under the control of a computer in order to produce spectrally shaped noise of any desired amplitude versus frequency shape. The foregoing is accomplished by randomly generating and serially storing binary noise in a first memory, by generating with a computer, filter coefficients and serially storing the filter coefficients in a second memory, and by individually adding and accumulating the filter coefficients generated by the computer when the serially corresponding noise coefficient has the same polarity as the logic that triggers the apparatus of this invention.

REFERENCES:
patent: 3578912 (1971-05-01), Beavers, Jr. et al.
patent: 3614400 (1971-10-01), Farnett et al.
patent: 3700869 (1972-10-01), Low
patent: 3723911 (1973-03-01), Forney, Jr.
patent: 3800093 (1974-03-01), Wolf
patent: 3950635 (1976-04-01), Constant
R. Buron et al., "Noise Generated by Digital Technique," IBM Tech. Disclosure Bulletin, vol. 8, No. 9, 2-1966, p. 1232.
R. W. Schafer, "A Survey of Digital Speech Processing Techniques," IEEE Trans. On Audio & Electroacoustics, vol. AV-20, No. 1, 3-1972, pp. 28-35.

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