Difference between revisions of "CELT TODO"

From XiphWiki
Jump to: navigation, search
Line 14: Line 14:
 
* Remove 2-phase stereo?
 
* Remove 2-phase stereo?
 
   
 
   
== Tuning (nothing that really needs fixing, but it's still open) ==
+
== Tuning ==
 
* Temporal masking
 
* 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)
 
* Band layout (spacing)
* qtheta offset
 
* delta allocation
 
* fine offset
 
* Spreading/folding parameter
 

Revision as of 22:08, 12 January 2011

Open issues

  • Reduce waste when splitting at high bit-rate?
  • fix start/end energy prediction
  • 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?

Still possible, but probably not a good idea

  • Enable new layout with more HF bands
  • Remove 2-phase stereo?

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)