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Speex

1,168 bytes removed, 15:54, 22 December 2012
As the "project page" now says that Speex is obsolete in favor of OPUS, the Speex pages here (Category) should get updated or deleted
== About =={{historical}}{{delete}}
= Website = The [http://www.speex.org/ Speex homepage] has all the project maintains info. == Hardware == See [[Speex hardware]] for a patentpartial list of supported hardware == Tasks == These are some improvements that could be made to Speex. Let [mailto:speex-dev@xiph.org us] know if you'd like to work on one of them. * Speech/signal processing (DSP design)** Improve noise suppression (get rid of musical noise) and residual echo suppression** Improve packet-loss concealment (PLC)** Re-write the built-in voice activity detector (VAD)** Improve the 2.15 kbps vocoder mode (there are even 4 unused bits left to use)** Algorithmic optimizations (see if some searches can be simplified/approximated) * Complete fixed-point (DSP development)** Wideband** VBR** Rest of the narrowband modes** Preprocessor (noise suppression, AGC)** Jitter buffer** Arch-specific optimization** More... * Tune (playing with parameters)** Noise weighting filter** Perceptual enhancement * Features (plain C programming)** Implement maximum VBR bit-rate** Implement peeling (write functions to strip some of the bits)*** Peel high-band (wideband -clear audio codec designed for compressing speech data> narrowband)*** Transform 24.6 kbps mode to 15 kbps mode * Documentation** Use questions from the mailing list to create a better FAQ on the wiki** Update the Speex manual based on recent papers** Improve libspeex documentation** Write good example code
== External links ==
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