Frame bounds estimation of frequency warping operators

Author

Caporale, Salvatore ; De Marchi, Luca ; Speciale, Nicoló

Author_Institution

ARCES/DEIS, Univ. of Bologna, Bologna

fYear

2009

fDate

19-24 April 2009

Firstpage

3453

Lastpage

3456

Abstract

In this work we provide an accurate analytical estimation of the frame bounds for frequency warping operators of arbitrary shaped non-smooth warping maps. We deal with both the nonuniform Fourier transform approximation and the aliasing suppressed form of the frequency warping operator. The estimation procedure is obtained by using an analytical model of the aliasing operators which has been previously introduced. The provided estimations can be used as design formulas for the parameters, such as degree of smoothness and redundancy, involved in the definition of the frequency warping operators.

Keywords

Fourier transforms; approximation theory; estimation theory; signal processing; frame bounds estimation; frequency warping operators; nonuniform Fourier transform approximation; signal processing; Analytical models; Computational complexity; Digital filters; Discrete Fourier transforms; Fourier transforms; Frequency estimation; Signal processing; Tiles; Time frequency analysis; Zinc; Frame Bounds; Frequency Warping;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech and Signal Processing, 2009. ICASSP 2009. IEEE International Conference on

Conference_Location

Taipei

ISSN

1520-6149

Print_ISBN

978-1-4244-2353-8

Electronic_ISBN

1520-6149

Type

conf

DOI

10.1109/ICASSP.2009.4960368

Filename

4960368