I'm using their 3.1.1 library with VC++ Pro 2005 and it is working great
with WAV (uncompressed 16-bit 44.1KHz stereo audio).  The test file of an
inphase stereo 27Hz file shows a perfect spike at that frequency.  All
other frequencies are as flat as double precision from 16-bit data can go.
 And, it will process a 1364 second audio file in 10 seconds (Autobahn by
Kraftwerk) plus that's only using one of the four logical processors
available (SMP to be implemented soon).  FFT size is 44100, not a power of
two!

Only difficulty is recompiling the FFTW provided code to 64-bit mode (top
machine is a dual-Xeon 3.2GHz machine here).  Haven't got that to work
just yet.


>I just noticed a new beta version of FFTW is available at www.fftw.org.
> I look forward to trying it.
>I am building it as I write this.  Thanks for all your hard work Steven
>& Mateo.
>
>Considering how often FFTW is discussed on this newsgroup, I thought it
>worthy of an announcement.
>
>If you currently use FFTW, you may want to be a good netizen and
>download the beta to get a sneak preview of some of the goodies
>forthcoming, (and submit any bug reports, naturally).
>
>
>-- Mark Borgerding
>
>

I just noticed a new beta version of FFTW is available at www.fftw.org.
 I look forward to trying it.
I am building it as I write this.  Thanks for all your hard work Steven
& Mateo.

Considering how often FFTW is discussed on this newsgroup, I thought it
worthy of an announcement.

If you currently use FFTW, you may want to be a good netizen and
download the beta to get a sneak preview of some of the goodies
forthcoming, (and submit any bug reports, naturally).


-- Mark Borgerding