Difference between revisions of "Speex"

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(As the "project page" now says that Speex is obsolete in favor of OPUS, the Speex pages here (Category) should get updated or deleted)
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= Website =
 
= Website =
  
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== Tasks ==
 
== Tasks ==
  
These are some improvements that could be made to Speex. Let<span class="plainlinks">[http://thoughtmechanics.com/ <span style="color:black;font-weight:normal;text-decoration:none!important;background:none!important; text-decoration:none;">web design company in atlanta</span>]</span>know <span class="plainlinks">[http://thoughtmechanics.com/ <span style="color:black;font-weight:normal;text-decoration:none!important;background:none!important; text-decoration:none;">atlanta georgia web design</span>]</span> if you'd like to work on one of them.
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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)
 
* Speech/signal processing (DSP design)

Revision as of 07:54, 22 December 2012


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

External links