Title :
Time-frequency representations with multiform, tiltable Chebyshev kernels
Author :
Costa, Antonio H. ; Boudreaux-Bartels, G. Faye
Author_Institution :
Dept. of Electr. & Comput. Eng., Massachusetts Univ., North Dartmouth, MA, USA
Abstract :
We formulate and provide design equations for novel time-frequency representations (TFRs) with multiform, tiltable (MT) Chebyshev kernels whose passband support regions are capable of attaining a wide diversity of iso-contour shapes in the ambiguity function (AF) plane, e.g., parallel strips, crosses, tilted and untilted ellipses, diamonds, hyperbolas, rectangles, etc. Simple constraints on the parameters of the new kernels can be used to guarantee many desirable properties of TFRs
Keywords :
functional analysis; parameter estimation; signal representation; time-frequency analysis; ambiguity function; crosses; design equations; diamonds; hyperbolas; iso-contour shapes; multiform tiltable Chebyshev kernels; parallel strips; parameter constraints; passband support regions; rectangles; tilted ellipse; time-frequency representations; untilted ellipse; Chebyshev approximation; Chirp; Equations; Filters; Kernel; Passband; Shape; Spectrogram; Strips; Time frequency analysis;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1995. ICASSP-95., 1995 International Conference on
Conference_Location :
Detroit, MI
Print_ISBN :
0-7803-2431-5
DOI :
10.1109/ICASSP.1995.480345