Difference between revisions of "Speex"
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| − | + | {{historical}} | |
| − | The Speex project | + | = Speex is deprecated; Xiph recommends you use [[Opus]] instead = |
| + | |||
| + | == Website == | ||
| + | |||
| + | 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 == | ||
| − | [ | + | * [[Wikipedia: Speex]] |
| + | |||
| + | [[Category:Speex]] | ||
Revision as of 13:22, 24 July 2013
Contents
Speex is deprecated; Xiph recommends you use Opus instead
Website
The 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 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
