Hello

Does anyone know if is it possible to do spectral synthesis with PD? If yes, are there some patches for me to take a look?

Thanks

spectral synthesis should be achieved with tables and rifft~. Maybe? Anyone else care to weigh in on this?

Thanks.
I'll give it a try. I'm an absolute begginer on Pd.

If you are a beginner go through the Help browser I01 - I10 to get the basics..... a word of warning though, understanding fft can be a bit of a headfu*k at first and requires understanding the basics of dsp (ie, simple maths and signal flow) Even some of the seasoned pros on this board struggle with the numbers!

Try reading this for a detailed tutorial to understand what actually happens when audio is sent into the frequency domain: http://footils.org/cms/show/60

If you find it too much to take in, you could try the fftease library, which has a collection of spectral objects that pretty much cover all areas that you'll need...you can find this here: http://www.sarc.qub.ac.uk/~elyon/LyonSoftware/MaxMSP/FFTease/

have fun

Thank you very much. I'll give it a try

Hi Boonier,
I downloaded the spectral objects from the link you gave me and I followed the instructions on the readme, but I can't make anything out of them beacause it's allways printing errors. Am I making anything wrong?
Thanks

what sort of errors are you getting? Can you cut and paste them into the forum for us?

I'm trying to play with help patches. For instance, with morphine the errors are these:

morphine~
... couldn't create
error: inlet: expected '' but got 'transition'
... you might be able to track this down from the Find menu.
error: signal outlet connect to nonsignal inle morphine~
... couldn't create
error: inlet: expected '' but got morphine~
... couldn't create
error: inlet: expected '' but got 'transition'
... you might be able to track this down from the Find menu.
error: signal outlet connect to nonsignal inle morphine~
... couldn't create
error: inlet: expected '' but got 'transition'
... you might be able to track this down from the Find menu.
error: signal outlet connect to nonsignal inlet (ignored)
error: signal outlet connect to nonsignal inlet (ignored)
t (ignored)
error: signal outlet connect to nonsignal inlet (ignored)
'transition'
... you might be able to track this down from the Find menu.
error: signal outlet connect to nonsignal inlet (ignored)
error: signal outlet connect to nonsignal inlet (ignored)
t (ignored)
error: signal outlet connect to nonsignal inlet (ignored)

and then

error: inlet: expected '' but got 'float'

Thanks for the help

ok are you on Intel mac? then you need the objects compiled for intel.. I don't know why that webpage hasn't been updated yet.

You can get them here: http://puredata.hurleur.com/sujet-1280-fftease-39 (scroll to bottom of post for attachment)

The help files are still relevant so put them where instructed..

Okay, problem solved
Thank you guys very much for the help. This is gonna be very helpful for the patches i'm creating for an audio installation. I'll provide them here when finished.