Re: [linux-audio-dev] DRC 2.4.0

Hello Steve, At 09.22 27/02/2004 +0000, you wrote: don't understand if you're referring to my FFT routines or the others. My FFT routines are about 10 times slower than GSL FFT, which are about 3 to 4 times slower than FFTW3, so probaly they are 30 to 40 times slower than FFTW3. My FFT routines are far from interesting, apart from being written in c++ using the native STL complex dataype and being compact and easy to use. The GSL mixed radix FFT is reported to be 3 to 4 times slower than FFTW3 in the FFTW3 web sites, the Ooura ones are instead reported as 30-40% slower than FFTW3 (they're only radix 2 though), but in my tests they seems to be no more than 20-30% faster than GSL mixed radix, so they should be much slower than FFTW3. The Ooura website report them as being a little faster than FFTW2 (see http://momonga.t.u-tokyo.ac.jp/~ooura/fftbmk.html). Don't know if it is the way I use them (I perform really long FFTs of complex data, the FFTW3 benchmark instead stops at around 260.000 items), or just the FFTW3 benchmark that is using different versions, but my data don't correlate really well with the FFTW3 benchmarks. Anyway take all this data with a grain of salt, these are just my impressions, not accurately measured benchmarks, which by itself should be taken already with more than a grain of salt. Bye, -- Denis Sbragion InfoTecna Tel: +39 0362 805396, Fax: +39 0362 805404 URL: http://www.infotecna.it