FRF of sine sweep data

[washdelima]

How do I calculate FRF of sine sweep input?

 

[BobM3]

I take it you have one input, the swept sine wave, and one output?

FRFs can be calculated in several ways. A common method is to take divide the cross spectral density by the input autospectral density (CSD/ASD).

 

[GregLocock]

However there is a horrible gotcha with sine sweep, if your analysis frames are shorter than the sweep length.

So, please describe your test conditions and the analysis you need.

Cheers

Greg Locock

SIGlease see FAQ731-376 for tips on how to make the best use of Eng-Tips.