Generalized Spectrograms and t -Wigner Transforms

We consider in this paper Wigner type representations Wig t 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 Wig t with a tempered distribution. We introduce furthermore a class of “quadratic repres...

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Main Authors: BOGGIATTO PAOLO, DE DONNO GIUSEPPE, OLIARO ALESSANDRO, BUI KIEN CUONG
Format: Article
Language:English
Published: Universidad de La Frontera 2010-01-01
Series:Cubo
Subjects:
Online Access:http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0719-06462010000300011
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spelling doaj-832303a863e54e86866a04a8a1547aab2020-11-25T03:20:36ZengUniversidad de La FronteraCubo0716-77760719-06462010-01-01123171186Generalized Spectrograms and t -Wigner TransformsBOGGIATTO PAOLODE DONNO GIUSEPPEOLIARO ALESSANDROBUI KIEN CUONGWe consider in this paper Wigner type representations Wig t depending on a parameter t &#8712; [0,1] as defined in [2]. We prove that the Cohen class can be characterized in terms of the convolution of such Wig t with a tempered distribution. We introduce furthermore a class of “quadratic representations” Sp t based on the t-Wigner, as an extension of the two window Spectrogram (see [2]). We give basic properties of Sp t as subclasses of the general Cohen class.<br>Nosotros consideramos en este artículo representaciones de tipoWigner Wig t dependiendo de um parámetro t &#8712; [0,1] como definido en [2]. Probamos que la clase Cohen puede ser caracterizada en terminos de la convolución de tales Wig t con una distribución temperada. Introducimos también la clase de “representaciones cuadraticas” Sp t basado en el t-Wigner, como una extensión de dos ventanas espectrograma (ver [2]). Nosotros damos propiedades básicas de Sp t como subclases de la clase Cohen.http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0719-06462010000300011Time-Frequency representationt-Wigner distributiongeneralized Spectrogram
collection DOAJ
language English
format Article
sources DOAJ
author BOGGIATTO PAOLO
DE DONNO GIUSEPPE
OLIARO ALESSANDRO
BUI KIEN CUONG
spellingShingle BOGGIATTO PAOLO
DE DONNO GIUSEPPE
OLIARO ALESSANDRO
BUI KIEN CUONG
Generalized Spectrograms and t -Wigner Transforms
Cubo
Time-Frequency representation
t-Wigner distribution
generalized Spectrogram
author_facet BOGGIATTO PAOLO
DE DONNO GIUSEPPE
OLIARO ALESSANDRO
BUI KIEN CUONG
author_sort BOGGIATTO PAOLO
title Generalized Spectrograms and t -Wigner Transforms
title_short Generalized Spectrograms and t -Wigner Transforms
title_full Generalized Spectrograms and t -Wigner Transforms
title_fullStr Generalized Spectrograms and t -Wigner Transforms
title_full_unstemmed Generalized Spectrograms and t -Wigner Transforms
title_sort generalized spectrograms and t -wigner transforms
publisher Universidad de La Frontera
series Cubo
issn 0716-7776
0719-0646
publishDate 2010-01-01
description We consider in this paper Wigner type representations Wig t depending on a parameter t &#8712; [0,1] as defined in [2]. We prove that the Cohen class can be characterized in terms of the convolution of such Wig t with a tempered distribution. We introduce furthermore a class of “quadratic representations” Sp t based on the t-Wigner, as an extension of the two window Spectrogram (see [2]). We give basic properties of Sp t as subclasses of the general Cohen class.<br>Nosotros consideramos en este artículo representaciones de tipoWigner Wig t dependiendo de um parámetro t &#8712; [0,1] como definido en [2]. Probamos que la clase Cohen puede ser caracterizada en terminos de la convolución de tales Wig t con una distribución temperada. Introducimos también la clase de “representaciones cuadraticas” Sp t basado en el t-Wigner, como una extensión de dos ventanas espectrograma (ver [2]). Nosotros damos propiedades básicas de Sp t como subclases de la clase Cohen.
topic Time-Frequency representation
t-Wigner distribution
generalized Spectrogram
url http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0719-06462010000300011
work_keys_str_mv AT boggiattopaolo generalizedspectrogramsandtwignertransforms
AT dedonnogiuseppe generalizedspectrogramsandtwignertransforms
AT oliaroalessandro generalizedspectrogramsandtwignertransforms
AT buikiencuong generalizedspectrogramsandtwignertransforms
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