Displacement-covariant time-frequency energy distributions
نویسندگان
چکیده
We present a theory of quadratic time-frequency (TF) energy distributions that satisfy a covariance property and generalized marginal properties. The theory coincides with the characteristic function method of Cohen and Baraniuk in the special case of "conjugate operators."
منابع مشابه
Unified Theory of Displacement - Covariant Time - Frequency Analysis
We present a theor of linear and quadratic time-frequency representations (&FRs) that are covariant to time-frequency displacement operators. The theory unifies important T F R classes (short-time Fourier transform, wavelet transform; Cohen’s, affine, hyperbolic, and power classes), and it allows the systematic construction of new TFRs that are covariant to a given operator.
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متن کاملDISPLACEMENT-COVARIANT TIME-FREQUENCY ENERGY DISTRIBUTIONS - Acoustics, Speech, and Signal Processing, 1995. ICASSP-95., 1995 International Conference on
-’We present a theory of quadratic time-frequency (TF) energy distributions that satisfy a covariance property and generalized marginal properties. The theory coincides with the characteristic function method of Cohen and Earaniuk in the special case of ‘‘conjugate operators.” 1 I N T R O D U C T I O N A N D O U T L I N E Important c1.asses of quadratic time-frequency representations (QTFRs), s...
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تاریخ انتشار 1995