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MathGroup Archive 2003

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Help to analyse a spectrum

  • To: mathgroup at smc.vnet.net
  • Subject: [mg39538] Help to analyse a spectrum
  • From: "thomas Martinuzzo" <thomasmartinuzzo at hotmail.com>
  • Date: Sat, 22 Feb 2003 03:37:39 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

I want analyse sound with mathematica. May you please help me to understand
this spectrum?



Clear[Do3, Do5,h]

Do3[t_] := 10Sin[262 2 Pi t]

Do5[t_] := 3Sin[1048 2 Pi t]

h[t_] := Do3[t] + Do5[t]

listasso = Table[h[t], {t, 0, 2.5, .0001}];



ListPlot[amplitude, ImageSize -> {1000, 900}, PlotRange -> All,
PlotJoined -> True];



I don't understand the spectrum return by mathematica.



I hope you will be able to understand me because I'm French and don't speak
very well English



Thanks



Thomas




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