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| | {{Obsolete|The CELT codec has been merged into the IETF [[Opus]] codec and is now obsolete}} |
| == Open issues == | | == Open issues == |
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| * <strike>Spreading/folding/strike> | | == Post-freeze == |
| ** <strike>Uniform quantisation/strike> | | * VBR waste prevention |
| ** <strike>Control over the amount of spreading/folding introduced/strike> | | * More intelligent VBR decisions |
| ** <strike>Make it have the same shape as the rest of the spectrum</strike> | | * Denorm prevention |
| | * Ogg mapping (including >2ch; LM/ch switching) |
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| * Tuning
| | [[Category:Opus]] |
| ** Band layout (spacing)
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| ** Bit allocation
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| *** Main table
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| *** Stereo
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| *** qtheta offset
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| *** fine offset
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| *** energy prediction parameters (means, decay)
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| ** Spreading/folding parameter
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| * Transients
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| ** Energy weighting pre- or post-normalization?
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| ** Include energy shape?
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| ** Partial remixing of short blocks?
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| * Make split more efficient
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| * Minimise bits left after PVQ
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| ** Reverse band ordering?
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| ** Fractional pulses?
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| * Dynamic allocation
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| ** Include a way to deviate from the normal bit allocation?
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| * Better stereo coupling
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| ** Better support for "intensity stereo"?
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| == Other decisions to make ==
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| * Should we use raw bits or not?
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| * What should we do about remaining bits after the last PVQ?
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| ** more fine energy?
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| ** encode bands backward?
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| ** allow "fractional pulses"
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| * Include a configuration packet for more flexibility? (probably not)
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| * Use a min width for ebands that's equal to the number of short blocks?
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