Fourier transform
- To: mathgroup at smc.vnet.net
- Subject: [mg43444] Fourier transform
- From: Ch akpovo <akpovo at lmfp.nhmfl.gov>
- Date: Wed, 17 Sep 2003 07:59:00 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
I'm using Time Series Package and I noticed that there is a difference between the power spectrum computed from the command Spectrum[] and that using Abs[Fourier[]. I would like to know why that difference and which method is the best as far as deriving the energy (parseval's theorem) carried in the data is concerned. Can anyone help? -- ch akpovo Laboratory for Modern Fluid Physics Florida A & M University Phone: 850 561 2473 Fax: 850 561 2474