Translations:Instantaneous attributes - book/28/en

The next step is to extract and plot the instantaneous phase lead and frequency associated with the local maxima. Because most of the signal energy in a trace is found in the vicinity of these peaks, the angular properties of the waveform can be described accurately by calculating the attributes only at the amplitude maxima. At such places, instantaneous phase lead tends to be linear, and instantaneous frequency tends to represent the average frequency of the amplitude spectrum.