[PD-announce] tbext w/ fftw support

[Tim Blechmann]

hi all,

i'm proud to present the first really useful externals for my small
library, that mainly contained boring / obsolete stuff:

rfftw~ and rifftw~:
they are doing exactly the same as the pd-internal rfft~ / rifft~, but
since they use the fftw3 library, they are pretty fast:

benchmarks on my p4 2.5 GHz for 16 objects:
(fftw with sse/sse2 enabled, pd with -O3 -march=pentium4 -mmmx -msse
-msse2-mfpmath=sse, gcc 3.3.3)

				rfft~		rfftw~:
block size 64 / overlap 32	65%		32%
	   128		32	75%		36%
	   256		32	82%		39%
	   512		32	90%		43%
	  1024		32	99%		48%
	  2048		16	56%		30%
	  4096		16	62%		37%
	  8192		16	68%		40%

				rifft~		rifftw~:
	    64		32	56%		30%
	   128		32	66%		31%
	   256		32	73%		29%
	   512		32	82%		31
	  1024		32	90%		33%
	  2048		32	100%		40%
	  4096		16	57%		27%
	  8192		16	64%		29%

i'm planing to add fftw~ and ifftw~ objects, soon...

cheers...

 Tim                          mailto:TimBlechmann at gmx.de
                              ICQ: 96771783
--
The only people for me are the mad ones, the ones who are mad to live,
mad to talk, mad to be saved, desirous of everything at the same time,
the ones who never yawn or say a commonplace thing, but burn, burn,
burn, like fabulous yellow roman candles exploding like spiders across
the stars and in the middle you see the blue centerlight pop and
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                                                          Jack Kerouac