Modelling of signal's time-frequency content using warped complex-time distributions

被引：0

作者：

Ioana, C ^{[1
]}

Stankovic, S ^{[1
]}

Quinquis, A ^{[1
]}

Stankovic, LJ ^{[1
]}

机构：

[1] ENSIETA, Brest, France

来源：

2005 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOLS 1-5: SPEECH PROCESSING | 2005年

关键词：

D O I：

暂无

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

Analytical form of the instantaneous frequency law (IFL) is very important when the physical parameters have to be evaluated from the time-frequency content of a signal. Generally.. the analyzed signals are composed of several time-frequency components characterized by various non-linear IFLs. To deal with such kind of signals, we propose a new method based on the warping operators (WO) and on the complex time distribution (CTD). Using parallel structures composed of several WOs, some time-frequency components of the analyzed signal are linearized. This linearization is highlighted by using the CTD which considerably reduces the artefacts due to the complexity of the analyzed signal. This leads to an accurate estimation process, illustrated and justified by numerical and real examples.

引用

页码：477 / 480

页数：4

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