PCM Encoder conformable to the A-law
    1.
    发明授权
    PCM Encoder conformable to the A-law 失效
    PCM编码器符合A律

    公开(公告)号:US4507792A

    公开(公告)日:1985-03-26

    申请号:US476620

    申请日:1983-03-18

    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。