ON THE INSTANTANEOUS FREQUENCY SMOOTHING FOR SIGNALS WITH QUASI-LINEAR FREQUENCY CHANGES

被引：0

作者：

Niedzwiecki, Maciej ^{[1
]}

Meller, Michal ^{[1
]}

机构：

[1] Gdansk Univ Technol, Fac Elect Telecommun & Comp Sci, Dept Automat Control, Gdansk, Poland

来源：

2011 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING | 2011年

关键词：

Adaptive signal processing; frequency smoothing;

D O I：

暂无

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

The problem of estimation of the slowly-varying instantaneous frequency of a nonstationary complex sinusoidal signal buried in noise is considered. This problem is usually solved using frequency tracking algorithms. It is shown that the accuracy of frequency estimates can be considerably increased if the results yielded by the frequency tracker are further processed using the appropriately designed filters. The resulting frequency smoother can be employed in many off-line applications. Whenever signal frequency varies in a sufficiently smooth manner, the proposed algorithm, based on a new, quasi-linear model of frequency changes, outperforms the existing solutions.

引用

页码：4288 / 4291

页数：4

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