Drexel dragonThe Math ForumDonate to the Math Forum

Search All of the Math Forum:

Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.

Math Forum » Discussions » Software » comp.soft-sys.matlab

Topic: Fast Fourier Transforms
Replies: 2   Last Post: Sep 17, 1996 10:41 AM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
Djamil Boulahbal

Posts: 14
Registered: 12/7/04
Re: Fast Fourier Transforms
Posted: Sep 13, 1996 6:22 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

In article <01bba023$534ee700$010200c0@faris.ecn.purdue.edu>,
"Joseph H. Sullivan" <jsulliva@ecn.purdue.edu> wrote:
>I was wondering if anybody could explain how to transform the Matlab FFT
>response into readable cos and/or sin fourier coefficients. Can it be
>As an example, say I feed it an array of data representing a combination of
>step functions over a period of 2pi that look like a cosine. Can I apply
>the FFT
>to that array and derive the first harmonic coefficient?

The REAL part of the FFT is the "COSINE" transform whereas the
IMAGINARY part corresponds to the "SINE" coefficients.

Hope this helps.

Dr. Djamil Boulahbal
Mechanical Engineering - E2
University of Waterloo
Waterloo, Canada

Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© The Math Forum 1994-2015. All Rights Reserved.