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Kaiser window for fft in matlab

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Chinmaye

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Hello all,

I am new to DSP and I am trying to implement windows for FFT. In matlab, I tried the following codes to understand different windows(Main lobe and side lobes).
Code: 
x1 = 0.0* cos(2*pi*f1*t +0.2) + 0.85* cos(2*pi*f2*t +1.8)
x2 = x1.*blackman(length(x1))'
x3 = x1.*hanning(length(x1))'
x4 = x1.*hamming(length(x1))'
x5 = x1.*bartlett(length(x1))'

The same doesn't work for Kaiser. Could someone please explain me this.
What is the command to understand Kaiser window in Matlab
 

It works pretty well for Kaiser windows. Check the documentation

doc kaiser
Click to expand...

What differs Kaiser from the other windows is the Beta - factor. Check the documentation.

And a hint when it comes to FFTs; it is worth checking up coherent sampling which might save you some of the issues that windowing can bring.
 

Sir, Could you plz post the link of the document
 

It's built-in in MATLAB. Just type

doc kaiser

in the console. Then you will be directed to the help documentation which has examples and links to further information.
 

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