手机录音文件通常是以WAV、MP3、AMR的格式保存，其中WAV和AMR格式的兼容性较差，一般情况下无法在媒体平台上传播或播放，因此，我们可以将其转换成MP3格式，解决录音文件的兼容性问题。

As MP3 utilises lossy compression, the same audio stream would result in a smaller file size as an MP3 than it would if captured as a WAV file. Both formats generally capture sound at 44.1KHz per ...