Speex: Difference between revisions
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= | = Website = | ||
The Speex project | 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 14:31, 10 October 2011
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