How to plot PSD in MATLAB of given ascii value?

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Koushik
Koushik 2013-7-27
Hello Everybody,
I am very new in MATLAB. I am having a text file containing 1024 ascii values. I want to plot PSD using rectangular or hanning window, fft and take scare of scaling of frequency and magnitude value. Please suggest the MATLAB code for this problem.
Thanks in advance!!!!!!
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Lisa Justin
Lisa Justin 2013-8-14
编辑：Lisa Justin 2013-8-14
First you need to unpack the binary data and convert to matlab format to be able to work with the data in matlab.

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回答（1 个）

Richard McCulloch
Richard McCulloch 2013-7-27
Is this what you're trying to do?
Fs = 1000;
t = 0:1/Fs:.3;
x=cos(2*pi*t*200)+randn(size(t));
Hs=spectrum.periodogram;
psd(Hs,x,'Fs',Fs)

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