PCM coder with shifting idle channel noise level

Details PCM coder with shifting idle channel noise level PCM coder with shifting idle channel noise level

1975-08-26

1979-04-24

Sloyan, Thomas J.

Communications: electrical

Audible indication

Percussion-type sound producer

340347AD, 340347M, 307355, 179 15AV, H03K 1302

Patent

active

041515161

ABSTRACT:
Circuitry useful in PCM coders for effectively shifting the idle channel noise signal to a level midway between the code state boundaries thereby significantly reducing the likelihood that noise signals will cross a boundary and be encoded.

REFERENCES:
patent: 2787418 (1957-04-01), MacKnight et al.
patent: 3103629 (1963-09-01), Damen et al.
patent: 3495238 (1970-02-01), Gabriel
patent: 3755750 (1973-08-01), Heberling
patent: 3795900 (1974-03-01), Monford
patent: 3984829 (1976-10-01), Zwack

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