Difference between revisions of "CELT TODO"

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(spreading done)
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** Include energy shape?
 
** Include energy shape?
 
** Partial remixing of short blocks?
 
** Partial remixing of short blocks?
 +
 +
* Make split more efficient
 +
 +
* Minimise bits left after PVQ
 +
** Reverse band ordering?
 +
** Fractional pulses?
  
 
* Dynamic allocation
 
* Dynamic allocation

Revision as of 07:57, 22 April 2010

Open issues

  • Spreading/folding/strike>
    • <strike>Uniform quantisation/strike>
    • <strike>Control over the amount of spreading/folding introduced/strike>
    • <strike>Make it have the same shape as the rest of the spectrum
  • Tuning
    • Band layout (spacing)
    • Bit allocation
      • Main table
      • Stereo
      • qtheta offset
      • fine offset
      • energy prediction parameters (means, decay)
    • Spreading/folding parameter
  • Transients
    • Energy weighting pre- or post-normalization?
    • Include energy shape?
    • Partial remixing of short blocks?
  • Make split more efficient
  • Minimise bits left after PVQ
    • Reverse band ordering?
    • Fractional pulses?
  • Dynamic allocation
    • Include a way to deviate from the normal bit allocation?
  • Better stereo coupling
    • Better support for "intensity stereo"?

Other decisions to make

  • Should we use raw bits or not?
  • What should we do about remaining bits after the last PVQ?
    • more fine energy?
    • encode bands backward?
    • allow "fractional pulses"
  • Include a configuration packet for more flexibility? (probably not)
  • Use a min width for ebands that's equal to the number of short blocks?