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| - | == About == | + | = Website = |
| | | | |
| - | The Speex project maintains a patent-clear audio codec designed for compressing speech data. | + | The [http://www.speex.org/ Speex homepage] has all the project info. |
| | + | |
| | + | == Hardware == |
| | + | |
| | + | See [[Speex hardware]] for a partial 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 -> 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 == | | == External links == |
| | | | |
| - | [http://www.speex.org Speex homepage] | + | * [[Wikipedia: Speex]] |
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