H - Electricity – 04 – J
Patent
H - Electricity
04
J
363/15
H04J 3/02 (2006.01)
Patent
CA 1161973
ABSTRACT A digital level control for varying the level of a linearly digitally encoded analogue signal. The linear pcm signal is digitally filtered to pro- vide an external gain control via a digital multiplier of the pcm signal. The arrangement may be time shared between a number of channels to provide control on a per call basis to compensate for variations which occur in the course of cabling, switching and maintenance of transmission signal quality.
322015
Smart & Biggar
Stc Plc
LandOfFree
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