Speex  1.2~beta4
Modules
Here is a list of all modules:
 Speex encoder and decoder
 SpeexBits: Bit-stream manipulations
 Various definitions for Speex callbacks supported by the decoder.
 SpeexEchoState: Acoustic echo canceller
 SpeexHeader: Makes it easy to write/parse an Ogg/Speex header
 JitterBuffer: Adaptive jitter buffer
 SpeexPreprocessState: The Speex preprocessor
 SpeexStereoState: Handling Speex stereo files