[PD] fourier transform of low-frequency signal

[<f.bardet@voila.fr]

Hi list,
I need to analyse the low-frequency (1 to 5 Hz) content of a non-audio signal.
So I'd like to proces Fourier Transform of my low-frequency, low sampled signal, within PD.
As my incoming signal is low-sampled at 25Hz (coming from a camera), i think i can't use fft objects designed for audio processing.
Do i have to rewrite an fft algorithm within pd, for low-frequency processing, or does this exist yet ?
Has anyone built such a process in PD ?

François Bardet 
10 place Thomas 
F-63000 Clermont-Ferrand 
0033 4 73 92 50 80 
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Faites un voeu et puis Voila ! www.voila.fr 

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