Wav file is the basic file or raw file which stores the audio data.Wav header contains important information such as sampling rate Monotype or sereo ,bytes per sample.The code reads header and buffer which can be processed the way we want.No addition

实现语音文件格式的的转换，实现pcm和raw转换成wav语音文件格式-Voice file format conversion, PCM and raw conversion into WAV voice file format