读取单通道pcm格式音频文件的程序，稍加修改即可作为读取较大音频文件并作相应处理，实际中笔者将该程序和其它程序结合，完成了许多先读取部分文件，在作后续处理的试验。-read channel PCM audio file format of procedures, little changes can be read as larger audio files and dealt with accordingly, in reality the author this program and ot