A moment-enhanced spectrogram is an iteratively improved spectrogram whose useful low-order time frequency moments (e.g. spectral energy, group delay, instantaneous power or envelope power, and instantaneous frequency) are identical to those of commonly used time-frequency distributions, (e.g. Wigner-Ville), without having any negative values or interference terms. This paper presents a detailed intercomparison of moment-enhanced spectrograms, Wigner-Ville distributions, and spectrograms for a wide variety of signals.

Authors: Preis, Douglas; Georgopoulos, Voula Chris
Affiliations: Tufts University, Medford, MA ; TEl Patras, Greece(See document for exact affiliation information.)
AES Convention: 106 (May 1999) Paper Number: 4972
Publication Date: May 1, 1999
Subject: Audio Measurements

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