Fast Fourier Transforms
- To: mathgroup at smc.vnet.net
- Subject: [mg21572] Fast Fourier Transforms
- From: "Burton" <Ctheurer at ecs.umass.edu>
- Date: Sat, 15 Jan 2000 02:04:15 -0500 (EST)
- Organization: College of Engineering, University of Massachusetts
- Sender: owner-wri-mathgroup at wolfram.com
Hello,
I am doing some analysis of acoustic data obtained from a pickup located
on a machine. The data is in the form of ordered pairs i.e. Time and
voltage. As far as I know fft in Mathematica only operates on a list of
single numbers. I have imported the voltage data (since the time is simply
incremental) and performed an fft on that successfully. My problem lays in
interpreting this data. I don't understand how to scale the x-axis of the
fft plot to represent frequency.
Any suggestions would be appreciated.
Thanks
-Charles Burton Theurer
ctheurer at ecs.umass.edu
University Of Massachusetts