MFC界面下实现PCM编码，采用A律13折现编码规则，可自定义输入值范围。-MFC interface PCM encoded using A-law the 13 discounted encoding rules, the the custom input value range.

子带编码是一种以信号频谱为依据的波形编码方法，首先用一组带通滤波器将输入信号按频谱分开，然后让每路子信号通过各自的自适应PCM编码器（ADPCM）编码，经过分接和解码再复合成原始信号。-In sub-band coding is a waveform signal based on the spectrum coding method using a first set of band pass filters to separate an input signal spectrum, and