[PD] Spectral Synthesis

julien.breval at tremplin-utc.net julien.breval at tremplin-utc.net
Fri Jun 20 14:37:42 CEST 2003

Hi everybody 

I have just suscribed to this mailing list. I have used Pure Data for about 4 
months (and GEM sometimes), for various applications, under Linux and Windows.  

I have a question about spectral synthesis.

I saw a patch (in Miller Puckette's book, " Theory and Techniques of Electronic 
Music ") that performs spectral synthesis like this : 
there is a bank of sine oscillators, and the amplitude of each sine is 
controlled by a graphic array. 

I tried to do this a bit differently before, using rifft~ and a graphic array. 
The idea was to resynthesize a sound from spectral data directly drawn in the 
array, unfortunately it didn't work. Maybe rifft~ works with rfft~ only ? I 
started from a classic analysis / resynthesis patch and used the resynthesis 

Has anyone managed to do (re)synthesis (without any actual analysis : the 
result of the analysis is drawn directly in an array) with rifft~ ? 

Thank you very much 


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