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Linear and quadratic time-frequency signal representations

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2 Author(s)
Hlawatsch, F. ; Dept. of Electr. Eng., Rhode Island Univ., Kingston, RI, USA ; Boudreaux-Bartels, G.F.

A tutorial review of both linear and quadratic representations is given. The linear representations discussed are the short-time Fourier transform and the wavelet transform. The discussion of quadratic representations concentrates on the Wigner distribution, the ambiguity function, smoothed versions of the Wigner distribution, and various classes of quadratic time-frequency representations. Examples of the application of these representations to typical problems encountered in time-varying signal processing are provided.<>

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Signal Processing Magazine, IEEE  (Volume:9 ,  Issue: 2 )