[Date Index] [Thread Index] [Author Index]

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

• Follow-Ups:
  • Re: Re: fourier ( FFT )
    • From: Sseziwa Mukasa <mukasa@jeol.com>

• References:
  • fourier ( FFT )
    • From: bar@ANTYSPAM.ap.krakow.pl