Mathematica 9 is now available
Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
1995
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*November
*December
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 1995

[Date Index] [Thread Index] [Author Index]

Search the Archive

demodulation question

  • To: mathgroup at christensen.cybernetics.net
  • Subject: [mg514] demodulation question
  • From: yverband at vnet3.vub.ac.be (Yves Verbandt)
  • Date: Tue, 7 Mar 95 07:38:51 +0100

Dear Mathgroupers,

I have some measured curves which following the model have the following form :

s(x) = f(x)*cos(k*x)

where k is a constant and f(x) is a slowly varying function.  Because there
is coniderable noise on the measurements the cosine is not very regular. 
Does anyone have an idea how to extract f(x)?  I tried the NonlinearFit
package and this was not very successfull!

Thank you very much for you kind help.

Yves Verbandt
**********************************************
Yves Verbandt
Vrije Universiteit Brussel
Applied Physics Department
ALNA-TW, Pleinlaan 2, B-1050 Brussel, BELGIUM
tel. +-32-2-629.36.13
fax. +-32-2-629.34.50
Internet yverband at vnet3.vub.ac.be
**********************************************



  • Prev by Date: RE: BarCharts and vertical axes
  • Next by Date: Re: auto notebook running
  • Previous by thread: RE: BarCharts and vertical axes
  • Next by thread: Re: demodulation question