audio channel

基本解释

DTMF has perfect anti-interference and some anti-Doppler shift ability and is widely used for low rate communication in audio channel.
DTMF信号具有优良的抗干扰性能和一定的抗多普勒频移的能力，广泛应用于语音信道的低速数据通信。
DTMF has perfect antiinterference and antidropper frequency shift ability, it is widely used for low rate communication in audio channel.
DTMF信号具有优良的抗干扰性能和一定的抗多普勒频移的能力，广泛应用于语音信道的低速数据通信。
Handle of a paused audio channel to be resumed.
需要进行恢复的暂停中的音轨的句柄。
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