On 12-Oct-99 Patrick De Smet wrote:
> On Tue, 12 Oct 1999 [EMAIL PROTECTED] wrote:
>> - II_a_bit_allocation: replace the exhaustive loop search for a
>> maximum value. some sort of tree or list? (I tried putting in a
>> sorted linked list, but the overhead was prohibitive.)
Just a caveat here: I've never tried programming a linked list for speed, so my
implementation was proabably quite naff.
The idea for this optimization came from "a high performance software
implementation of mpeg audio coder" Kumar & Zubair
They suggest using a balanced heap, but as I have no idea how to implement one
of them, I tried for the linked list.
The other idea K&Z have is doing multiple window_subbands() in one call. If
in layerII, it'd be worth tweaking it and putting it back into LAME.
> Please read http://telin.rug.ac.be/~pds/mpeg_audio/xlame/
a few ideas here for those that are interested.
It seems Patrick may get a grad student to work on some lame code :)
suggestions are welcome on which areas to have a look at
later mike
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