Revision as of 03:06, 27 March 2006

Speex

The Speex homepage has all the project info.

These are some improvements that could be made to Speex. Let us know if you'd like to work on of them.

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

@@ Line 7: / Line 7: @@
 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 of them.
-* Speech/signal processing (DSP skills required)
+* Speech/signal processing (DSP design)
 ** Write a better perceptual enhancer (work has begun)
 ** Improve packet-loss concealment (PLC)
@@ Line 14: / Line 14: @@
 ** Algorithmic optimizations (see if some searches can be simplified/approximated)
-* Complete fixed-point (programming skills and basic DSP skills)
+* Complete fixed-point (DSP development)
 ** Wideband
 ** VBR
 ** Rest of the narrowband modes
+** Arch-specific optimization
 ** More...
-* Tune (requires only time, headphones and the ability to re-compile Speex)
+* Tune (playing with parameters)
 ** Noise weighting filter
 ** Perceptual enhancement
-* Features (only C knowledge required)
+* 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 (requires time and basic writing skills)
+* Documentation
 ** Use questions from the mailing list to create a better FAQ on the wiki
 ** Update the Speex manual based on recent papers