如何消除此音频文件中的噪音？

Question

I am uploading an audacity project with 2 tracks, the 1st one contains a "bitbit" sound resulted from Speex echo cancellation. I tried to remove the sound using Audacity noise cancellation, didn't work. Tried equalizer to cut off some high frequency sounds, worked but somehow degraded the sound quality. Please help how I can clear the noisy audio without significantly degrading quality. If Audacity doesn't work, any C/C++ library can also be used. Audacity Project

Answer 1

我认为您应该使用效果菜单中的降噪效果。