[Ffmpeg-devel] Fixed vs. Floating Point AAC

Måns Rullgård mru
Wed Mar 8 17:54:39 CET 2006

Rich Felker said:
> On Wed, Mar 08, 2006 at 01:01:47PM +0100, Michael Niedermayer wrote:
>> it should support both, fixed point is absolutely needed for embeded systems
>> (and richs K6), and floating point is more accurate and faster on modern
>> cpus, and floating point is much easier to implement
> Would you like to provide benches showing it's faster? Testing of
> libvorbis versus tremor has shown that the integer implementation
> (tremor) is always faster, even on the latest cpus. This is without
> any vectorization (except possible float vectorization by gcc?); with
> mmx/3dnow/etc the difference should be even more drastic.

libvorbis faster than tremor on Alpha.

M?ns Rullg?rd
mru at inprovide.com

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