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MathGroup Archive 1999

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Discrete Fourier Transforms

  • To: mathgroup at smc.vnet.net
  • Subject: [mg18075] Discrete Fourier Transforms
  • From: "W.W. Sampson" <w.sampson at umist.ac.uk>
  • Date: Tue, 15 Jun 1999 01:43:33 -0400
  • Delivery-date: Tue Jun 15 06:22:52 1999
  • Organization: Department of Paper Science, UMIST
  • Sender: owner-wri-mathgroup at wolfram.com

In the Mathematica Book for version 3, it states in Section 3.8.3,  with
reference to Fourier Transforms, "In electrical engineering, the sign of
the
exponent is typically reversed, leading to a list of values which is
reversed."

As the output from the Fourier Transformis symmetrical, should this be
that the values are the reciprocal?

Bill

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Dr W.W. Sampson, Department of Paper Science, UMIST,
Manchester, M60 1QD, UK. Email: w.sampson at umist.ac.uk
Phone:+44-(0)161-200-3898    Fax:+44-(0)161-200-3858.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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