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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Universidad de La Frontera
2010-01-01
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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 ∈ [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 ∈ [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 ∈ [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 ∈ [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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1724617693517053952 |