Difference between revisions of "CELT TODO"

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== Post-freeze ==
 
== Post-freeze ==
* Stereo/mono switching
 
 
* Samplerate switching
 
* Samplerate switching
 +
* Denorm prevention

Revision as of 11:05, 22 January 2011

Open issues

  • DTX/CNG
  • Reduce waste when splitting at high bit-rate?
  • Stop computing log2Amp() on uninitialized data
  • Allocation for split frequency masking
  • Define output clipping behaviour
  • Stereo/mono switching (Greg's patch and more)
  • Digital silence
  • Check dynamic range

Tuning

  • Temporal masking
  • 3-tap prefilter/postfilter
  • qtheta offset
  • Just in case (probably not needed)
    • delta allocation for non-transient
    • fine offset
    • Spreading/folding parameter
    • Band layout (spacing)

Still possible, but probably not a good idea

  • Enable new layout with more HF bands
  • Remove 2-phase stereo?
  • Revert N=1 allocation special case?
  • Revisit folding
    • Can we remove the need to fold on split?
    • Should we do L/R folding?
    • Should we fold the side (probably not)?
    • Band-aligned folding?

Post-freeze

  • Samplerate switching
  • Denorm prevention