Proceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis (Cat. No.98TH8380)最新文献_第2页

A comparative performance study of excisers for various interference classes 不同干扰等级的割齿器性能比较研究

Proceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis (Cat. No.98TH8380) Pub Date : 1998-10-06 DOI: 10.1109/TFSA.1998.721441

A. Bultan, M. Tazebay, A. Akansu

引用次数: 4

Computing derivatives of scaling functions and wavelets 计算尺度函数和小波的导数

Proceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis (Cat. No.98TH8380) Pub Date : 1998-10-06 DOI: 10.1109/TFSA.1998.721435

M. Oslick, I. Linscott, Snezana Maslakovic, J. Twicken

引用次数: 3

Analysis and design of numerically controlled oscillators based on linear time-variant systems 基于线性时变系统的数控振荡器分析与设计

Proceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis (Cat. No.98TH8380) Pub Date : 1998-10-06 DOI: 10.1109/TFSA.1998.721459

J. Vollmer

引用次数: 5

The higher order statistics of energy operators with application to neurological signals 能量算子的高阶统计量及其在神经信号中的应用

Proceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis (Cat. No.98TH8380) Pub Date : 1998-10-06 DOI: 10.1109/TFSA.1998.721486

D. Sherman, M. Hinich, N. Thakor

{"title":"The higher order statistics of energy operators with application to neurological signals","authors":"D. Sherman, M. Hinich, N. Thakor","doi":"10.1109/TFSA.1998.721486","DOIUrl":"https://doi.org/10.1109/TFSA.1998.721486","url":null,"abstract":"Statistics for detecting changes in signal energy are developed for generalized energy estimation algorithms. The Teager energy operator (TEO) is a method for quantifying signal energy, a product of both frequency as well as amplitude. Using second and third order autocorrelation-based tests for dependence, we examine time domain methods of energy detection of sinusoids. To quantify signal energy we exploit the whiteness of the output of the TEO. The C-statistics examine the level of second order whiteness in a time series. The newly developed H-statistics test confirms the presence of third order whiteness or independence. A pure noise exhibits both second and third order whiteness. A power analysis of these tests for energy detection are also shown to be sensitive to changes in both sinusoidal amplitude and frequency. The Cand H-statistics allow for quantification of distortion in the TEO output as well. Distortion in an energy operator results from poor cancellation of cross-terms or from second harmonic distortion as typified by a traditional square law device. Fluctuations in band-specific EEG (electroencephalogram) energy also are amenable to practical analysis using the TEO. An example of an EEG signal with a large harmonic content are spindle signals taken from animal experiments dealing with recovery from hypoxic-asphyxic injury.","PeriodicalId":395542,"journal":{"name":"Proceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis (Cat. No.98TH8380)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133993016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

The discrete wavelet transform as a tool for automatic phase pickers 离散小波变换作为一种自动相位采集工具

Proceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis (Cat. No.98TH8380) Pub Date : 1998-10-06 DOI: 10.1109/TFSA.1998.721396

P. Ooninex

引用次数: 3

On modeling of self-similar random processes in discrete-time 离散时间下自相似随机过程的建模

Proceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis (Cat. No.98TH8380) Pub Date : 1998-10-06 DOI: 10.1109/TFSA.1998.721428

Wei Zhao, R. Rao

引用次数: 13

Some fundamental properties of MMSE filter banks MMSE滤波器组的一些基本性质

Proceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis (Cat. No.98TH8380) Pub Date : 1998-10-06 DOI: 10.1109/TFSA.1998.721477

M. K. Mihçak, P. Moulin, K. Ramchandran, M. Anitescu

引用次数: 0

Features extraction for signal classification based on Wigner-Ville distribution and mutual information criterion 基于Wigner-Ville分布和互信息准则的信号分类特征提取

Proceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis (Cat. No.98TH8380) Pub Date : 1998-10-06 DOI: 10.1109/TFSA.1998.721493

E. Grall-Maes, P. Beauseroy

引用次数: 5

A fast multiple decomposition of a discrete-time signal on bases in vector spaces by the polynomial time-frequency transformation 用多项式时频变换在向量空间基上对离散时间信号进行快速的多重分解

Proceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis (Cat. No.98TH8380) Pub Date : 1998-10-06 DOI: 10.1109/TFSA.1998.721398

P. Zavarsky, N. Kambayashi, Takeshi Myoken

{"title":"A fast multiple decomposition of a discrete-time signal on bases in vector spaces by the polynomial time-frequency transformation","authors":"P. Zavarsky, N. Kambayashi, Takeshi Myoken","doi":"10.1109/TFSA.1998.721398","DOIUrl":"https://doi.org/10.1109/TFSA.1998.721398","url":null,"abstract":"It is shown that the redundant decomposition of a discrete-time signal by the block polynomial time-frequency transform (PTFT) can be implemented in a very efficient way. First, redundancy of decomposition of a discrete-time signal by a block transform defined by a special singular transformation matrix is discussed and its relation with an oversampled, power and allpass complementary, KN channel filter bank is illustrated. In the considered block transform the singular matrix can be partitioned into K subsets of unitary systems of vectors. Based on the parallels which exist between unitary transforms and filter banks, namely the parallel that any block unitary transform can be shown as a perfect reconstruction filter bank, allow us to relate the considered block transform with an oversampled KN channel filter bank which can be partitioned into K maximally decimated, power and allpass complementary, filter banks. It results in the fact that computation of frequency domain representation of a block of signal of length N, computed at M>N not necessarily uniformly spaced frequencies, can require less computation and can be more efficient than computation of the frequency domain representation which uses fast M-point FFT. It is shown that the fast decomposition of discrete time signal onto bases in vector spaces by the polynomial time-frequency transform is possible in a very similar way.","PeriodicalId":395542,"journal":{"name":"Proceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis (Cat. No.98TH8380)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131881313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Super-resolved point-spread-function calibration for astronomical imaging 天文成像的超分辨点扩展函数校准

Proceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis (Cat. No.98TH8380) Pub Date : 1998-10-06 DOI: 10.1109/TFSA.1998.721465

E. Hege

引用次数: 4