[Vorbis-dev] naive questions about vorbis

[Keenan Pepper]

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.