Introduction - If you have any usage issues, please Google them yourself
In testing the ffmpeg, speex, system acm, after webrtc audio resampling results found webrtc of the highest quality, able to retain more real signal, which is a very important voice resampling (such as AEC), but extracting webrtc resampling very difficult, and there is not a certain percentage multiples or resampling will build failure problems resampler submitted here, the effect is second only to webrtc, for non-special occasions (no need to call the duplex echo cancellation), can reach high the level recommended.