Allocator override (speex_lib_ctl)Better error handlingFixed-point:  - Wideband  - Initialization  - Jitter bufferEcho cancellation:  - Int array for denoiser hooksDenoiser:  - Smooth gain (remove musical noise)  - Better noise adaptation  - Do some tuningAGC:  - Use median filtering instead of "non-linear mean"Features-Add maximum/minimum bit-rate control for VBR-Improve error handling (with perror-like call?)Long-term quality improvements-Improve perceptual enhancement (including wideband)Standards-Complete Speex RTP profile-MIME type registrationideas:Peelable stream (double codebook, higher bands, stereo)LPC from spectral domainBetter psycho-acoustic model. Masking curve from Vorbis?