Gaussian Window of Optimal Time-Frequency Resolution in Numerical Implementation of Short-Time Fourier Transform

被引：2

作者：

Jin Yang ^{[1
]}

Hao Zhiyong ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Energy Engn, Hangzhou 310027, Peoples R China

来源：

MEASURING TECHNOLOGY AND MECHATRONICS AUTOMATION, PTS 1 AND 2 | 2011年 / 48-49卷

关键词：

Gaussian Window; time-frequency resolution; short-time Fourier transform; continuous-time standard deviation;

D O I：

10.4028/www.scientific.net/AMM.48-49.555

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：

In this paper, we report the condition to keep the optimal time-frequency resolution of the Gaussian window in the numerical implementation of the short-time Fourier transform. Because of truncation and discretization, the time-frequency resolution of the discrete Gaussian window is different from that of the proper Gaussian function. We compared the time-frequency resolution performance of the discrete Gaussian window and Hanning window based on that they have the same continuous-time domain standard deviation, and generalized the condition under which the time-frequency resolution of the Gaussian window will prevail over that of the Harming window.

引用

页码：555 / 560

页数：6

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