A frequency domain method for parametrization of the voice source

A new frequency domain method for the quantification of glottal volume velocity waveforms is presented. This technique, called Parabolic Spectral Parameter (PSP), is based on fitting a parabolic function to a pitch synchronously computed spectrum of the estimated voice source. The PSP algorithm gives a single numerical value that describes how the spectral decay of an obtained glottal flow behaves with respect to theoretical bounds corresponding to maximal and minimal spectral tilting