This function estimates the frequency response of the Working Data set using spectral analysis. Open the Frequency response model View to see the results.
The spectral model is also calculated if you press the hotkey s in the ident window.
There is a trade-off between frequency resolution and uncertainty of the estimate: The better the resolution, the more uncertain estimate. This trade-off is controlled by the frequency resolution parameter, entered in the Frequency Resolution box. The interpretation of this depends on the method used:
or leave empty for default. The default is to let the resolution be twice the difference between the neigbouring frequencies. The resultion is thus determined by the frequency vector. Note that a scalar R is inversely related to the M used for SPA and ETFE