实现语音对讲，不过有回音。 音频采样，回传，只是一个初步的探讨，谢谢大家。-Voice intercom, but there are echoes. Audio sampling, return is only a preliminary discussion, Thank you.

本例可以对wav格式的音频进行录音，也可以播放，程序不大，适合初学者-In this case can be wav format for audio recording, you can play, the program is not suitable for beginners