Looking into the execution profiles, fft processing is currently not the real bottleneck. In Linux I do get a reasonable profile saying that my IIR filtering (the method of default choice) is responsible for somewhere between 50 and 65 % of the execution time.
Under msys/mingw I get profiling results that require some more interpretation. best jan 2010/1/31 Alberto I2PHD <[email protected]> > > > On 1/30/2010 7:51 PM, jan van katwijk wrote: > > *This afternoon I downloaded them and will look into it. for ft's I used a > number of > different algorithms, ending up, however, with FFTW, beating all the others > performancewise by miles.* > > Have you looked at the benchmarks where FFTW3 and IPP are compared ? Look > here : > http://www.fftw.org/speed/CoreDuo-3.0GHz-icc64/ > > and scroll down the page, until you find this graph > > [image: http://www.sdradio.eu/images/fftw_ipp.gif] > > 73 Alberto I2PHD > > > -- Jan van Katwijk +31 (0)15 3698980 +31 (0) 628260355
