The digital portion includes low-frequency video, the pulses that keep receivers synchronized with transmitters, and the audio signal for high-quality stereo sound.
数字部分包括低频视频(使接收机与发射机保持同步的脉冲)以及用于高质量立体声的音频信号。
First, the audio signal is established in the same way that any phone call is made... only if the called subscriber also has a video phone set.
首先声音信号的发收和其他电话一样……但受话人必须也有一个可视电话机。
Multimedia electronic tuner can receive 870MHZ all hyper- band, and outputs video and audio signal directly.
多媒体电子调谐器可接收870MHZ全增补频道，并直接输出视频与音频信号。
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