Spectrum of a sound
- To: mathgroup at smc.vnet.net
- Subject: [mg39533] Spectrum of a sound
- From: "thomas martinuzzo" <thomasmartinuzzo at hotmail.com>
- Date: Sat, 22 Feb 2003 03:37:23 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
Can you explain to me this problem
thanks
ClearAll["Global`*"]
la3[t_]:=Sin[2 ¦Ð 440 t]
suite=Table[la3[t],{t,0,1/2,.0001}];
ListPlot[suite,PlotJoined\[Rule] True];
nPoints=Length[suite]
amplitude=Abs[Fourier[suite]];
ListPlot[amplitude,PlotJoined\[Rule]
True,PlotRange\[Rule] All,AxesLabel\[Rule] {Hz,dB}];
ListPlot[amplitude,PlotJoined\[Rule] True,AxesLabel\[Rule] {Hz,dB}];
Can you explain me this spectrum
How to do, to have only a Dirac Fuction ¨¤ 440 Hz?