Optimizing frequency resolution with DFT

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Article #1291

#1291

From: Bernhard Feiten
Date: Wed, 30 Sep 1992 14:47

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|  TU-Berlin,Inst.f.Kommwiss,Sekr.H51, Dr.-Ing. Bernhard Feiten       |
|  Strasse des 17.Juni 135,D-1000 Berlin 12   Tel.: +49 30 314 25699  |
|  INTERNET: feiten@mvax.kgw.tu-berlin.de                             |
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Hi all. 

I'm looking for methods to analyze sounds with DFT.
Normal window functions have the problem of either having low side lobe level
or small main lobe bandwidth.

Does anybody knows an algorithm based on DFT (FFT) that optimizes both - 
for example a main lobe bandwidth similar to a rectangular window and 
side lobe level similar to a Kaiser-Bessel window ? 

We think that pitch synchronous analysis with variable window size could be a 
solution. I'm searching for literature or somebody having experience on that
topic ?

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From: feiten@sdec1.zrz.tu-berlin.de (Bernhard Feiten)
Subject: Optimizing frequency resolution with DFT
Message-ID: <1992Sep30.154718@sdec1.zrz.tu-berlin.de>
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Date: Wed, 30 Sep 1992 14:47:18 GMT
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