Accessible through the “Signal tools/Moving average smoothing” main menu option or the graphic toolbar button.

Smoothing is the operation that can very often help to extract some useful information from a noisy signal or indistinct FFT sequence. The overall effect of smoothing is similar to filtering with the low-pass filter.

In SIGVIEW, smoothing is performed by using a weighted central moving average method. In the corresponding dialog you can determine the type of weighting function to be used and its length.

A longer function will produce a stronger smoothing effect on the signal.

If you want this operation to be performed on each FFT result after its calculation, you can turn it on in Spectral analysis defaults .

You can change the smoothing parameters for a smoothing window if you open the Edit/Properties menu option from its context menu.