graphing frequency & amplitude?
- To: mathgroup at smc.vnet.net
- Subject: [mg79153] graphing frequency & amplitude?
- From: efifer at fas.harvard.edu
- Date: Fri, 20 Jul 2007 03:16:20 -0400 (EDT)
Hi,
I am trying to create a graph that graphs frequency versus amplitude of a sound
made by the sum of two sine waves. I tried fourier transforming them and
graphing it, yet it looks to me like the graph is plotting time rather than
frequency. How do I change this?
Plot[10*Sin[200t] + 10*Sin[100t], {t, 0, 1}]
data = Table[10*Sin[200t] + 10*Sin[100t], {t, 0, 100}]
ListPlot[Abs[Fourier[data]], PlotJoined -> True, PlotRange -> All]
Thank you for the help!
Emily
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