CELT TODO: Difference between revisions

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m (Add notice that CELT was merged into Opus)
 
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{{Obsolete|The CELT codec has been merged into the IETF [[Opus]] codec and is now obsolete}}
== Open issues ==
== Open issues ==


* Tuning
== Post-freeze ==
** Band layout (spacing)
* VBR waste prevention
** Bit allocation
* More intelligent VBR decisions
*** Main table
* Denorm prevention
*** Stereo
* Ogg mapping (including >2ch; LM/ch switching)
*** qtheta offset
*** fine offset
*** energy prediction parameters (means, decay)
** Spreading/folding parameter


* Transients
[[Category:Opus]]
** Haar/Hadamard
** Delta adjustment
** Can we remove all of the old code?
** Split below 32-bit
** Partial remixing of short blocks?
 
* <strike>Make split more efficient</strike>
** <strike>Support for LN=-1</strike>
 
* 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 ==
<strike>* Should we use raw bits or not?</strike>
* 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)
<strike>* Use a min width for ebands that's equal to the number of short blocks?</strike>

Latest revision as of 05:31, 23 June 2016

Open issues

Post-freeze

  • VBR waste prevention
  • More intelligent VBR decisions
  • Denorm prevention
  • Ogg mapping (including >2ch; LM/ch switching)