Spectrum: Get kurtosis...

A command to query the selected Spectrum object.

The (normalized) kurtosis of a spectrum is the fourth central moment of this spectrum, divided by the square of the second central moment, minus 3. See Spectrum: Get central moment....

Setting

Power
the quantity p in the formula for the centre of gravity and the second and fourth central moment. Common values are 2, 1, or 2/3.

Interpretation

The kurtosis is a measure for how much the shape of the spectrum around the centre of gravity is different from a Gaussian shape. For a white noise, the kurtosis is -6/5.

Related measures


© ppgb, March 23, 2002