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MathGroup Archive 2004

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Re: fourier ( FFT )

  • To: mathgroup at smc.vnet.net
  • Subject: [mg52254] Re: fourier ( FFT )
  • From: bar at ANTYSPAM.ap.krakow.pl
  • Date: Thu, 18 Nov 2004 01:44:54 -0500 (EST)
  • References: <200411100945.EAA11193@smc.vnet.net> <cmve3o$sh2$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Sseziwa Mukasa <mukasa at jeol.com> wrote:

> > How can I use Mathematica to obtain frequencies ?
> > Fourier[] works on only one list!

> See http://forums.wolfram.com/mathgroup/archive/2003/Sep/msg00062.html.
Hi, 

example:
I have two series:
t=Table[tt,{tt,0,10,0.01}];
x=Table[Sin [A t],{t,0,10,0.01}];

I expected maximum peak on frequence Omega=A   ( omega = 2 Pi/T, not
1/T)

It must be independece on density (0.01) and length (10)


I need that to analyse of solution differential equation
that look like a chaotic. 

regards, Olaf


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