Hi, I am a student, and I am developing tools for VoIP. I am looking for C++ functions that can evaluate the noise level, the energy mean, and delay between a perfect sound and a sound that have passed through the VoIP system. Does vorbis contains those functions by default? What are the codec supported by those libraries? Thank you for your response and for any kind of advise.
sylvain zorman wrote:> Hi, I am a student, and I am developing tools for VoIP.Try Speex. It's another free audio codec like Vorbis, but it's optimized for low-latency processing of speech, perfect for VoIP.> I am looking for C++ functions that can evaluate the noise level, the > energy mean, and delay between a perfect sound and a sound that have > passed through the VoIP system.Automatic methods of judging sound quality are pretty meaningless compared to double-blind listening tests.