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所谓的 PCM(pulse code modulation)编码指的是把模拟电视(视频或音频)信号,通过取样(时间上离散化)、量化(幅度上离散化)处理后变换成在时间、幅度上均离散化的信号,再用二进制数码表示的脉冲编码调制信号(PCM),如图1所示。
The so-called PCM (pulse code modulation) code refers to the analog TV (video or audio) signal, by sampling (time discretization), quantization (amplitude discretization) processing into time and amplitude discretization Of the pulse code modulation signal (PCM) represented by a binary number, as shown in FIG. 1.