...
It is therefore sometimes used as input to auto-trackers.
Instantaneous Frequency
Rate of change of the Instantaneous Phase: ωC=dφ/dt.
Represents the mean of the instantaneous power spectrum and its unit is Hz.
Instantanous Bandwidth
Defined as the absolute value of the derivative of the Envelope divided by the Envelope: ωB=|dEnvelope/dt|/Envelope.
Represents the standard deviation of the instantaneous power spectrum about its mean and its unit is Hz.
Dominant Frequency
Defined as the Root Mean Square of the Instantaneous Frequency and the Instaneous Bandwidth: ωRMS=√(ωB^2+ωC^2).
Represents the Root Mean Square of the instantaneous power spectrum and its unit is Hz.