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公开(公告)号:US4507792A
公开(公告)日:1985-03-26
申请号:US476620
申请日:1983-03-18
申请人: Kazuo Yamakido , Shiro Hagiwara , Fumiaki Fujii
发明人: Kazuo Yamakido , Shiro Hagiwara , Fumiaki Fujii
CPC分类号: H04B14/048
摘要: In a PCM encoder, in order to reduce noise in an idle channel or in the absence of any voice signal, a detector circuit is provided which detects the idle channel, and a circuit is connected to the detector circuit which fixes the polarity bit of the PCM signal produced by the PCM encoder when the detector circuit has detected the idle channel.
摘要翻译: 在PCM编码器中,为了减少空闲信道中的噪声或者没有任何语音信号,提供了一种检测电路,其检测空闲信道,并且电路连接到检测器电路,该电路将 当检测器电路检测到空闲信道时,由PCM编码器产生的PCM信号。