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Re: Spectrum Mod Questions

Date1997-06-17 14:27
FromReid Sweatman
SubjectRe: Spectrum Mod Questions
> >I'm trying to create sounds with timbres drawn from one source and 
> 
> >vocal formants from another.
> 
> 
> I haven't realy played around with that part of CSound much, I still a
> freshman, but your problem to me seems that the old analogue Vocoders
> used a small number of fixed band pass filter, like 8 or something,
> where as pvoc and so forth in CSound uses 100's even more.

I believe the Moog vocoder had five filters.  I assume when you say 
that CSound has hundreds that you're referring to the number of 
sample bins in pvcross' FFT and reverse transforms.  I'm not sure I 
see why that would make such a difference, other than to make 
CSound's formant shaping more subtle.

Reid Sweatman
shadow@u.cc.utah.edu