Thread Subject: FFTs - exponential window function

I am doing vibration testing on an assembly machine. One of the tests I run is measuring vibrations after an aggressive motor move and stop. Since this is basically a form of hammer test I want to apply an exponential window to the vibration data but I can't find any information on the proper way to implement that filter.

Does anyone have a good reference on how to implement an exponential window? The bigger question might be how to I adjust the resulting spectrum to account for the window.

On Aug 5, 10:52 am, "Tyler " <tyler.r...@seagate.com.remove> wrote:
> I am doing vibration testing on an assembly machine. One of the tests I run is measuring vibrations after an aggressive motor move and stop. Since this is basically a form of hammer test I want to apply an exponential window to the vibration data but I can't find any information on the proper way to implement that filter.
>
> Does anyone have a good reference on how to implement an exponential window? The bigger question might be how to I adjust the resulting spectrum to account for the window.

Try:

www.bksv.com/pdf/Bv0031.pdf

and

www.bksv.com/pdf/TechnicalReview1984-4.pdf

in particular:

Technical Review 1984-4 Proper Use of Weighting Functions for Impact
Testing


Dale B. Dalrymple