[Ffmpeg-devel] Fixed vs. Floating Point AAC

Mike Melanson mike
Thu Mar 9 01:12:03 CET 2006

Michael Niedermayer wrote:
> you will have to do one of the following
> use floats
> use low precission integers
> use 32*32->64 >> 32 -> 32 and hope the target cpu can do this quickly
> use full 32*32->64 mutiplies which will be probably slow

	Excellent synopsis of the fixed vs. floating point trade-offs. Maybe 
our AAC decoder will resemble FAAD2 in that it is compile-time 
switchable between fixed and floating point?

	-Mike Melanson

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