[PD] fft beginner question

[cristiano figueirÿfffff3]

Hi, thanks for help everyone. Now it's much more
clear. I downloaded the "Beginner's Guide to the
FFT-objects in Pd" from Frank
(http://footils.org/pkg/fft-tut.tgz). And have some
more questions:


-> working on patch fft-up-close.pd:
I have a blocksize=8 and a samplerate=44100 and all
analysis have been printed here:

orig:
0.13004  0.26951  0.40352  0.52934  0.64446  0.74649 
0.83341  0.90344 
img:
0        1.0317   0.41678  0.17191  0        0       
0        0       
re:
4.4602   -0.58717 -0.46243 -0.44167 -0.43735 0       
0        0       
amp:
4.4602   1.1871   0.62253  0.47395  0.43735  0       
0        0       
amp-normal:
0.27876  0.074192 0.038908 0.029622 0.027334 0       
0        0       
after-fft:
0.13004  0.26951  0.40352  0.52934  0.64446  0.74649 
0.83341  0.90344 


=> Ok, with a block of 8 i have data control over 4
partials from the incoming signal rigth? The
frequencies are given by multiples of
Samplerate/blocksize, starting on F0= 0hz , that's
rigth?
So, my question is about the normalized
amplitudes(amp-normal):

1) Why the first is so loud? This is not the F0 (0
hz)?

2) With the normalized amplitudes i can estimate wich
partials are more relevants to the resynthesis (wich
partials are more louder in a particular
spectrum/audio)? Is this rigth?

-> working on "specgate~.pd"

1) My Pd (vanilla 0-40.2, on debian) don't recognize
the [>~] object, isn't a native object? Case not where
i download this object?

thanks for all.

cristiano


      Abra sua conta no Yahoo! Mail, o único sem limite de espaço para armazenamento!
http://br.mail.yahoo.com/