Title :
Construction of positive time-frequency distributions
Author :
Loughlin, Patrick J. ; Pitton, James W. ; Atlas, Les E.
Author_Institution :
Dept. of Electr. Eng., Pittsburgh Univ., PA, USA
fDate :
10/1/1994 12:00:00 AM
Abstract :
A general method for constructing nonnegative definite, joint time-frequency distributions (TFDs) satisfying the marginals of time |s(t)|2 and frequency |S(f)|2 is presented. As nonnegative-definite distributions with the correct marginals, these TFDs are members of the Cohen-Posch class. Several examples illustrating properties of these TFDs are presented for both synthetic and real signals
Keywords :
acoustic signal processing; iterative methods; minimisation; numerical analysis; signal processing; time-frequency analysis; Cohen-Posch class; nonnegative definite joint time-frequency distributions; real signals; synthetic signals; Airplanes; Auditory system; Chirp; Density functional theory; Fourier transforms; Kernel; Machinery; Spectrogram; Speech; Time frequency analysis;
Journal_Title :
Signal Processing, IEEE Transactions on
