pcm-wav 格式转换为IMA-ADPCM-WAV.包括Wav格式中文详细说明，和语音测试文件。转换后的文件可用mediaplayer等播放器播放。,function :pcm-wav format file convertion to ima-adpcm-wav, also includes wav file format introduce in detail(chinese) and an example wav file for test.

音频测试wav文件，可直接pcm播放，用于验证speaker或者headset功能。(for audio device function verification.)