Hi

I would like to ask if someone has that object already compiled as an external, willing to share with us...
I try to make fft spectral multiplications using fft sizes greater than 65536 samples which isn't very efficient (in terms of CPU usage) using traditional fft algorithms... fftw would solve the problem (according to the benchmarks)... I've downloaded the object Mr Ben Saylor shared but I don't now how to deal with header files fftw3.h and partconv.h to extract the external one. One can find the code here: http://puredata.info/Members/bensaylor/partconv~-0.1.tar.gz/file_view

Thanks in advance...

Do you need it compiled for windows, linux or os x?

Hi and thanks for reply. Sorry I didn't write, I'm working on windows xp.

Ben using the fftw package in his external. You can get it here
http://www.fftw.org/

Yes, I've found that but I can't compile the external (not familiar with C) and there's nowhere the external compiled. Only the .c codes...I just wonder if one has it already compiled in its external form...

I was able to compile it with MinGW but it crashes PD as soon as I enable DSP processing. Sorry, I'd have to test it in linux later at home to see how it behaves there. Make sure it's not some sort of incompatibility with windows.

Thanks for your help... I think fftw should work on windows...At least it works in Matlab 6 but I can't use it for real time applications that I need it for...Thanks again!

Just tried it on linux. Works like a charm.

I'm glad+ jealous (in a good way though)...So, do you believe that I have no chance to see that object working on xp? I read the package works in windows max/msp as far as one includes the fftw3.dll file in the msp folder. On the other hand there's no external object doing fftw~ in max/msp although there are some externals made using those algorithms for different purposes (filtering,loudness etc). Thanks again for your contribution to that little problem of mine...

It should work. From what I can see it's not doing anything UNIX specific. I played around with the code a bit and it seems that it's crashing while doing pd calls. Nothing to do with fftw3

Must be something with my compiler. I have very little experience programming in windows so I couldn't tell you what it is.

One thing you should try though is getting it to work with partconv~-0.2
http://puredata.info/Members/bensaylor/partconv~-0.2.tar.gz/file_view

Here it gives you instructions for compiling with Visual C++
http://www.fftw.org/install/windows.html

I used MinGW

Thanks, I'll give it a try...

Leondas,

By accident I found out that PD-Extended comes with partconv~ and it works just fine under windows. If you have PD-Extended just check out:
help->browser
5.reference/bsaylor/partconv~-help.pd