[PD] fft on pd.. does it have a sync signal?

Jamie Bullock jamie at postlude.co.uk
Mon Aug 15 23:58:27 CEST 2005

Hi Jose,

Isn't a Cepstrum (real or complex) just the fft of the log of an fft
(real or complex)? Can't you do this with just (r)fft~ and log~, or am I
misunderstanding what you are trying to do?


On Mon, 2005-08-15 at 16:00 -0300, José Henrique Padovani wrote:
> Hi,
> I'm working on a real-time cepstrum patch...  was using Max/MSP on my 
> University but now I've decided to use PD. So there are small diferences 
> that I'm trying to understand. Max/MSP's fftin~ object has a sync signal 
> that is very usefull to do crossover patches, for example... It makes a 
> signal ramp that goes from 0 to 1 when it computes 0 to N-1 from the fft 
> frame... Now I'm trying to use the same system with a phasor~ in the pd 
> sub- patch where is the block-size but it didn't worked.... If anyone 
> has a simple fft-based corossover patch it would help.
> Thanks,
> Z.

More information about the Pd-list mailing list