Introduction - If you have any usage issues, please Google them yourself
1. Read Wav audio file from the file
2. The audio file of the play, pause, stop function
3. The recording from a microphone, and can be stored into a Wav file
4. To play, pause, stop the recording, and other functions
5. Realize the audio sampling rate and quantization digit transformation (such as 44.1 KHz 16-bit conversion to 16 KHz, 8)