【Audio】开源音频库G711和MP3Dec网址 DATE: 2018.12.24 G.711: https://www.itu.int/itu-t/recommendations/rec.aspx?rec=911 MP3Dec: https://sourceforge.net/projects/mad/files/OldFiles/mad-0.14.1b.tar.gz/download?use_mirror=master&r=&use_mirror=master