DISCRETE GABOR EXPANSIONS

被引：278

作者：

WEXLER, J

RAZ, S

机构：

[1] Department of Electrical Engineering, Technion, Israel Institute of Technology, Technion City, Haifa

来源：

SIGNAL PROCESSING | 1990年 / 21卷 / 03期

关键词：

Gabor representation; numerical implementation;

D O I：

10.1016/0165-1684(90)90087-F

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The Gabor expansion comprises a window function h(t) whose effective width is T1, a shift parameter T controlling the window's discrete shift along t and a Fourier kernel sampled at a constant frequency interval Ω. Classically, the window is taken to be a gaussian and the parametric choice ΩT = 2π and T = T1 is made. This work seeks to convert the Gabor representation into a discrete and finite format that is directly suitable for numerical implementation. The stated objective is reached under general conditions, facilitating the selection of arbitrary window functions as well as arbitrary oversampling rates (ΩT ≤ 2π). Numerical examples are given. © 1990.

引用

页码：207 / 220

页数：14

共 21 条

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