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Cubo (Temuco)

versión On-line ISSN 0719-0646


PAOLO, BOGGIATTO; GIUSEPPE, DE DONNO; ALESSANDRO, OLIARO  y  CUONG, BUI KIEN. Generalized Spectrograms and t -Wigner Transforms. Cubo [online]. 2010, vol.12, n.3, pp.171-186. ISSN 0719-0646.

We consider in this paper Wigner type representations Wigt depending on a parameter t ∈ [0,1] as defined in [2]. We prove that the Cohen class can be characterized in terms of the convolution of such Wigt with a tempered distribution. We introduce furthermore a class of “quadratic representations” Spt based on the t-Wigner, as an extension of the two window Spectrogram (see [2]). We give basic properties of Spt as subclasses of the general Cohen class.

Palabras clave : Time-Frequency representation; t-Wigner distribution; generalized Spectrogram.

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