Proceedings of the IEEE Signal Processing Workshop on Higher-Order Statistics最新文献_第4页

The application of non-linear Volterra type filters to television images 非线性Volterra型滤波器在电视图像中的应用

Proceedings of the IEEE Signal Processing Workshop on Higher-Order Statistics Pub Date : 1997-07-21 DOI: 10.1109/HOST.1997.613483

W. Collis, M. Weston, P. White

引用次数: 4

A linear feedforward neural network with lateral feedback connections for blind source separation 一种用于盲源分离的具有横向反馈连接的线性前馈神经网络

Proceedings of the IEEE Signal Processing Workshop on Higher-Order Statistics Pub Date : 1997-07-21 DOI: 10.1109/HOST.1997.613545

S. Choi, A. Cichocki

引用次数: 10

Isolated word recognition using high-order statistics and time-delay neural networks 孤立词识别使用高阶统计和时滞神经网络

Proceedings of the IEEE Signal Processing Workshop on Higher-Order Statistics Pub Date : 1997-07-21 DOI: 10.1109/HOST.1997.613487

M. Ashouri

{"title":"Isolated word recognition using high-order statistics and time-delay neural networks","authors":"M. Ashouri","doi":"10.1109/HOST.1997.613487","DOIUrl":"https://doi.org/10.1109/HOST.1997.613487","url":null,"abstract":"In this paper, two isolated word recognition methods based on high-order statistics and a time-delay neural network (TDNN) for recognition of Farsi spoken digits have been studied. The adopted speech recognition system consists of four modules, namely, a preprocessor, endpoints' detector, feature extractor and classifier. The first method estimates the AR parameters of speech based on the third- and fourth-order cumulants using high-order Yule-Walker, W-slice and 1-D slice approaches. In the second, method, statistical features are extracted from the estimated high-order probability density function (pdf) of thresholded amplitude features. For each pdf estimate, the values of mean, variance, third order moment and entropy are computed. The total number of features for each frame of approximate length of 15 ms is 16. The adopted TDNN has 16 nodes in its input layer, 10 nodes in its output layer and two hidden layers. The learning rule of the adopted TDNN that is based on the backpropagation rule has been modified to decrease the training time. Computer simulation results obtained from recognizing 10 Farsi digits spoken by different speakers shows that the first method has a better recognition rate while the second method necessitates less computation.","PeriodicalId":305928,"journal":{"name":"Proceedings of the IEEE Signal Processing Workshop on Higher-Order Statistics","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123708806","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: 3

Fractionally-spaced signal reconstruction based on maximum likelihood 基于最大似然法的分数间隔信号重建

Proceedings of the IEEE Signal Processing Workshop on Higher-Order Statistics Pub Date : 1997-07-21 DOI: 10.1109/HOST.1997.613514

B. Porat, B. Friedlander

引用次数: 1

Deblurring two-tone images by a joint estimation approach using higher-order statistics 采用高阶统计量联合估计方法对双色图像进行去模糊处理

Proceedings of the IEEE Signal Processing Workshop on Higher-Order Statistics Pub Date : 1997-07-21 DOI: 10.1109/HOST.1997.613497

Ta‐Hsin Li, Key-Shin Lii

引用次数: 11

Blind channel identification based on higher-order cumulant fitting using genetic algorithms 基于遗传算法的高阶累积量拟合盲信道识别

Proceedings of the IEEE Signal Processing Workshop on Higher-Order Statistics Pub Date : 1997-07-21 DOI: 10.1109/HOST.1997.613512

S. Chen, S. McLaughlin

引用次数: 9

Fourier series based nonminimum phase model for second- and higher-order statistical signal processing 基于傅立叶级数的非最小相位模型用于二阶和高阶统计信号处理

Proceedings of the IEEE Signal Processing Workshop on Higher-Order Statistics Pub Date : 1997-07-21 DOI: 10.1109/HOST.1997.613554

Chong-Yung Chi

引用次数: 5

On-line algorithms for blind deconvolution of multichannel linear time-invariant systems 多通道线性定常系统的盲反卷积在线算法

Proceedings of the IEEE Signal Processing Workshop on Higher-Order Statistics Pub Date : 1997-07-21 DOI: 10.1109/HOST.1997.613516

Y. Inoue, T. Sato

引用次数: 6

Fast estimation of Wiener kernels of nonlinear systems in the frequency domain 频域非线性系统维纳核的快速估计

Proceedings of the IEEE Signal Processing Workshop on Higher-Order Statistics Pub Date : 1997-07-21 DOI: 10.1109/HOST.1997.613499

M. A. Shcherbakov

引用次数: 0

Variability in higher order statistics of measured shallow-water shipping noise 测量的浅水船舶噪声的高阶统计量的变异性

Proceedings of the IEEE Signal Processing Workshop on Higher-Order Statistics Pub Date : 1997-07-21 DOI: 10.1109/HOST.1997.613555

L. A. Pflug, G. Ioup, J. Ioup, P. Jackson

{"title":"Variability in higher order statistics of measured shallow-water shipping noise","authors":"L. A. Pflug, G. Ioup, J. Ioup, P. Jackson","doi":"10.1109/HOST.1997.613555","DOIUrl":"https://doi.org/10.1109/HOST.1997.613555","url":null,"abstract":"Many underwater acoustic signal processing algorithms are designed for use in stationary and/or Gaussian noise. While these assumptions are often valid for applications in deep water ocean areas, they may not be appropriate for shallow water areas, especially in the presence of local shipping activity. Local shipping also produces spatial correlation in the noise and introduces additional complexity for multichannel processing. In this paper, two 30-minute sets of ambient ocean noise, recorded near the San Diego, California coast, are analyzed for stationarity and Gaussianity using the Kolmogorov-Smirnov test. Since processing algorithms based on higher order statistics often assume Gaussianity, time-dependent fluctuations in the third and fourth order cumulants are also analyzed. The analysis reveals significant variability in the time lengths of stationary periods, and episodic periods of nonGaussianity that last for up to five minutes. Statistical fluctuations appear predominantly in the second and fourth order cumulants rather than the third order cumulant. The shipping noise is also shown to be correlated between pairs of hydrophones with the level of correlation varying over time and the correlation ranging from positive to negative with increasing channel separation.","PeriodicalId":305928,"journal":{"name":"Proceedings of the IEEE Signal Processing Workshop on Higher-Order Statistics","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134572835","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: 23