How much do Windowing procedures harm the signal?

On Mon, 09 Jul 2007 13:07:44 -0700, dspguy2@netscape.net wrote:

  (snipped)
>
>The halfway point between fft bins is used since it represents the
>worst case loss. At the halfway point the power in adjacent FFT bins
>is equal (for symmetric windows). If the frequency is lower then more
>power goes to the lower FFT bin and less to the upper FFT bin. The
>opposite happens when the frequency is increased.
>
>Cheers,
>David

Hi,
  In case you're interested,
there's a neat article, "FAST, ACCURATE FREQUENCY 
ESTIMATORS", by  Eric Jacobsen and Peter Kootsookos
in the "DSP Tips & Tricks" column, in the May 2007 
issue of the IEEE Signal Processing magazine.

That article addresses the subject of this thread.

See Ya',
[-Rick-]

R.Lyons@_BOGUS_ieee.org (Rick Lyons) writes:

> On Mon, 09 Jul 2007 13:07:44 -0700, dspguy2@netscape.net wrote:
>
>   (snipped)
>>
>>The halfway point between fft bins is used since it represents the
>>worst case loss. At the halfway point the power in adjacent FFT bins
>>is equal (for symmetric windows). If the frequency is lower then more
>>power goes to the lower FFT bin and less to the upper FFT bin. The
>>opposite happens when the frequency is increased.
>>
>>Cheers,
>>David
>
> Hi,
>   In case you're interested,
> there's a neat article, "FAST, ACCURATE FREQUENCY 
> ESTIMATORS", by  Eric Jacobsen and Peter Kootsookos
> in the "DSP Tips & Tricks" column, in the May 2007 
> issue of the IEEE Signal Processing magazine.
>
> That article addresses the subject of this thread.
>
> See Ya',
> [-Rick-]

There's also the landmark paper (seems no one quotes it
anymore) that was published almost 30 years ago:

@article{harris,
  title = "{On the Use of Windows for Harmonic Analysis with the Discrete Fourier Transform}",
  author = "{Harris, Frederic J.}",
  journal = "Proceedings of the IEEE",
  year = "1978",
  month = "January"}

-- 
%  Randy Yates                  % "And all that I can do
%% Fuquay-Varina, NC            %  is say I'm sorry, 
%%% 919-577-9882                %  that's the way it goes..."
%%%% <yates@ieee.org>           % Getting To The Point', *Balance of Power*, ELO
http://home.earthlink.net/~yatescr

On Thu, 19 Jul 2007 12:58:39 -0400, Randy Yates <yates@ieee.org>
wrote:

  (snipped)
>
>There's also the landmark paper (seems no one quotes it
>anymore) that was published almost 30 years ago:
>
>@article{harris,
>  title = "{On the Use of Windows for Harmonic Analysis with the Discrete Fourier Transform}",
>  author = "{Harris, Frederic J.}",
>  journal = "Proceedings of the IEEE",
>  year = "1978",
>  month = "January"}
>
>-- 
>%  Randy Yates                  % "And all that I can do

Hi Randy,
  I've thought about that before.  My guess, 
if I had to guess, would be that Cooley's & Tukey's 
original FFT paper is the MOST referenced signal 
processing paper.  Then comes harris' "Windows" paper 
as the 2nd-most referenced paper.  

(I wonder if that's true.)

See Ya',
[-Rick-]
  

Rick Lyons wrote:

(snip)

>   I've thought about that before.  My guess, 
> if I had to guess, would be that Cooley's & Tukey's 
> original FFT paper is the MOST referenced signal 
> processing paper.  Then comes harris' "Windows" paper 
> as the 2nd-most referenced paper.  

I presume most here know that Gauss originated the FFT,
though this wasn't discovered until a few years after the
above mentioned paper was published.

http://en.wikipedia.org/wiki/Cooley-Tukey_FFT_algorithm

-- glen

On Jul 19, 9:58 am, Randy Yates <ya...@ieee.org> wrote:
>...
> There's also the landmark paper (seems no one quotes it
> anymore) that was published almost 30 years ago:
>
> @article{harris,
>   title = "{On the Use of Windows for Harmonic Analysis with the Discrete Fourier Transform}",
>   author = "{Harris, Frederic J.}",
>   journal = "Proceedings of the IEEE",
>   year = "1978",
>   month = "January"}
>
> --
> %  Randy Yates                  % "And all that I can do
> %% Fuquay-Varina, NC            %  is say I'm sorry,
> %%% 919-577-9882                %  that's the way it goes..."
> %%%% <ya...@ieee.org>           % Getting To The Point', *Balance of Power*, ELOhttp://home.earthlink.net/~yatescr

As posted earlier in this thread:
Look for the original paper here:
http://www.eng.vt.edu/me5714/textbook/windows.pdf

It is still available there.

Dale B. Dalrymple
http://dbdimages.com