Remove DC component from Zoom FFT

[eja]

I am performing vibration analysis using the sound and vibration toolkit. Is it possible to remove the dc component of a frequency domain signal generated from a Zoom FFT? Or remove the DC component in the time domain signal prior to performing the Zoom FFT?

Thanks

[preston_johnson]

You might consider a high pass filter on the data prior to the FFT operation.  THis would in effect AC couple the signal - removing the DC component.  You could also use the AC/DC estimator and subtract the DC result from your signal.