Digital noise generator

Details Digital noise generator Digital noise generator

1990-07-25

1992-06-09

Nguyen, Long T.

Boots, shoes, and leggings

G06F 102

Patent

active

051213494

ABSTRACT:
A digital noise generator for transmitting white noise during a period when a digital telephone speech signal is absent. The digital noise generator includes a pseudo-random bit sequence generator, an amplitude control circuit, and a PCM code-word-generating shift register. A pseudo-random bit sequence is generated by the pseudo-random bit sequence generator, an amplitude code-word is generated by the amplitude control circuit, and pseudo-random noise signal is generated and outputted by the PCM code-word-generating shift register on the basis of the pseudo-random bit sequence and the amplitude code-word.

REFERENCES:
patent: 3614399 (1971-10-01), Linz
patent: 4719643 (1988-01-01), Beeman
patent: 4769777 (1988-09-01), Bittle

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