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2004 12th European Signal Processing Conference最新文献

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On designing a wideband fractional delay filter using the farrow approach 用法罗法设计宽带分数阶延迟滤波器
2004 12th European Signal Processing Conference Pub Date : 2004-09-06 DOI: 10.5281/ZENODO.38312
E. Hermanowicz
{"title":"On designing a wideband fractional delay filter using the farrow approach","authors":"E. Hermanowicz","doi":"10.5281/ZENODO.38312","DOIUrl":"https://doi.org/10.5281/ZENODO.38312","url":null,"abstract":"In this paper the problem of designing a wideband FIR fractional delay filter using the Farrow approach is considered. A two-stage design with a half-band linear-phase prefilter optimal in the Chebyshev sense and a short maximally flat Lagrangian fractional delay filter in the Farrow structure is proposed. It offers an economic implementation with the number of multiplications smaller than for one-stage approach used hitherto, provided that the prefilter is a Nyquist filter. A novel, accurate method of computing the coefficients of Farrow subfilters is introduced based on symbolic designing of k-th degree differentiators. The proposed filter is intended for applications with variable fractional delay value.","PeriodicalId":347658,"journal":{"name":"2004 12th European Signal Processing Conference","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129139987","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
Convolutive BSS using a penalized mutual information criterion 使用惩罚互信息标准的卷积BSS
2004 12th European Signal Processing Conference Pub Date : 2004-09-06 DOI: 10.5281/ZENODO.38461
Mohammed El Rhabi, G. Gelle, H. Fenniri, G. Delaunay
{"title":"Convolutive BSS using a penalized mutual information criterion","authors":"Mohammed El Rhabi, G. Gelle, H. Fenniri, G. Delaunay","doi":"10.5281/ZENODO.38461","DOIUrl":"https://doi.org/10.5281/ZENODO.38461","url":null,"abstract":"The Blind Separation problem of linear time dependent mixtures is addressed in this paper. We have developed a novel algorithm based on the minimization of the mutual information plus a penalized term which ensures an a priori normalization of the estimated sources (outputs). The criterion minimization is done using a well known gradient approach. Finally, some numerical results are presented to illustrate the performance of the penalized algorithm comparing to the Babaie-Zadeh approach presented in [4].","PeriodicalId":347658,"journal":{"name":"2004 12th European Signal Processing Conference","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132600525","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: 0
Source depth estimation using modal decomposition and frequency-wavenumber transform 基于模态分解和频波数变换的源深度估计
2004 12th European Signal Processing Conference Pub Date : 2004-09-06 DOI: 10.5281/ZENODO.38533
B. Nicolas, J. Mars, J. Lacoume
{"title":"Source depth estimation using modal decomposition and frequency-wavenumber transform","authors":"B. Nicolas, J. Mars, J. Lacoume","doi":"10.5281/ZENODO.38533","DOIUrl":"https://doi.org/10.5281/ZENODO.38533","url":null,"abstract":"Source localization in shallow water environment is a crucial issue in underwater acoustics. Many methods based on Matched Field Processing (MFP) or on modal decomposition (also called mode filtering) have been developed using a vertical array. The conventional mode filter separates modes using a vertical array of hydrophones. In this case, modes amplitudes are estimated by spatial integration of the pressure field which becomes impossible with a horizontal array. In this paper, we propose an efficient method to estimate the source depth by modal decomposition of the pressure field recorded on a horizontal array of hydrophones. Modes amplitudes are estimated using the frequency-wavenumber transform, which is the 2D Fourier transform in time and radial distance. Then predicted modes amplitudes are compared to measured modes amplitudes, and source depth is estimated. Robustness against noise of the method is studied and application on real data is presented.","PeriodicalId":347658,"journal":{"name":"2004 12th European Signal Processing Conference","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130709717","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: 6
Embedding quantum cryptography on DSP-boards 在dsp板上嵌入量子密码
2004 12th European Signal Processing Conference Pub Date : 2004-09-06 DOI: 10.5281/ZENODO.38365
R. Lieger, T. Lorünser, G. Humer, F. Schupfer
{"title":"Embedding quantum cryptography on DSP-boards","authors":"R. Lieger, T. Lorünser, G. Humer, F. Schupfer","doi":"10.5281/ZENODO.38365","DOIUrl":"https://doi.org/10.5281/ZENODO.38365","url":null,"abstract":"Quantum cryptography is the only system for key generation that can provably not be tampered by an eavesdropper without being noticed. While its theoretical basis is already reasonably well understood, commercial application is hampered by the lack of ready-to-use embedded encryption systems. In this paper we will describe our hardware solution, developed for setting up an application oriented quantum cryptography embedded-system.","PeriodicalId":347658,"journal":{"name":"2004 12th European Signal Processing Conference","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130742718","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
Noise removal on color image sequences using coupled anisotropic diffusions and noise-robust motion detection 基于耦合各向异性扩散和噪声鲁棒运动检测的彩色图像序列去噪
2004 12th European Signal Processing Conference Pub Date : 2004-09-06 DOI: 10.5281/ZENODO.38251
P. Bourdon, B. Augereau, C. Olivier, C. Chatellier
{"title":"Noise removal on color image sequences using coupled anisotropic diffusions and noise-robust motion detection","authors":"P. Bourdon, B. Augereau, C. Olivier, C. Chatellier","doi":"10.5281/ZENODO.38251","DOIUrl":"https://doi.org/10.5281/ZENODO.38251","url":null,"abstract":"In this paper, we propose a new approach for noise removal on color image sequences, based on coupled spatial and temporal anisotropic diffusions. This approach consists in smoothing a sequence while keeping all discontinuities caused by edges and moving objects. Our approach is based on a low level detection of moving areas in a noisy sequence, in order to associate temporal diffusion to a spatial diffusion process, thus denoising the sequence more efficiently.","PeriodicalId":347658,"journal":{"name":"2004 12th European Signal Processing Conference","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132105853","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: 2
Appropriate windowing for group delay analysis and roots of z-transform of speech signals 适当的分组延迟分析窗口和语音信号的z变换根
2004 12th European Signal Processing Conference Pub Date : 2004-09-06 DOI: 10.5281/ZENODO.38215
B. Bozkurt, B. Doval, C. d’Alessandro, T. Dutoit
{"title":"Appropriate windowing for group delay analysis and roots of z-transform of speech signals","authors":"B. Bozkurt, B. Doval, C. d’Alessandro, T. Dutoit","doi":"10.5281/ZENODO.38215","DOIUrl":"https://doi.org/10.5281/ZENODO.38215","url":null,"abstract":"This study discusses the difficulties of phase spectrum analysis of speech signals and shows that appropriate windowing is very crucial for obtaining reliable phase spectra. The main difficulties of phase based analysis stem from the domination of spiky effects of roots (zeros) of the signal z-transform close to the unit circle. We show how this problem is linked to windowing by discussing zero-patterns for speech signals. Once windowing is performed properly, group delay functions are much less noisy and reveal clearly formant information.","PeriodicalId":347658,"journal":{"name":"2004 12th European Signal Processing Conference","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134507875","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: 21
Sound detection and classification through transient models usingwavelet coefficient trees 利用小波系数树的瞬态模型对声音进行检测和分类
2004 12th European Signal Processing Conference Pub Date : 2004-09-06 DOI: 10.5281/ZENODO.38469
Michel Vacher, D. Istrate, J. Serignat
{"title":"Sound detection and classification through transient models usingwavelet coefficient trees","authors":"Michel Vacher, D. Istrate, J. Serignat","doi":"10.5281/ZENODO.38469","DOIUrl":"https://doi.org/10.5281/ZENODO.38469","url":null,"abstract":"Medical Telesurvey needs human operator assistance by smart information systems. Usual sound classification may be applied to medical monitoring by use of microphones in patient's habitation. Detection is the first step of our sound analysis system and is necessary to extract the significant sounds before initiating the classification step. This paper proposes a detection method using transient models, based upon dyadic trees of wavelet coefficients to insure short detection delay. The classification stage uses a Gaussian Mixture Model classifier with classical acoustical parameters like MFCC. Detection and classification stages are evaluated in experimental recorded noise condition which is nonstationary and more aggressive than simulated white noise and fits with our application. Wavelet filtering methods are proposed to enhance performances in low signal to noise ratios.","PeriodicalId":347658,"journal":{"name":"2004 12th European Signal Processing Conference","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123895444","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: 34
Statistical analysis of the Kumaresan-Tufts and Matrix Pencil methods in estimating a damped sinusoid 估计阻尼正弦波的kumaresantufts和矩阵铅笔方法的统计分析
2004 12th European Signal Processing Conference Pub Date : 2004-09-06 DOI: 10.5281/ZENODO.38226
E. Djermoune, M. Tomczak
{"title":"Statistical analysis of the Kumaresan-Tufts and Matrix Pencil methods in estimating a damped sinusoid","authors":"E. Djermoune, M. Tomczak","doi":"10.5281/ZENODO.38226","DOIUrl":"https://doi.org/10.5281/ZENODO.38226","url":null,"abstract":"Several methods have been developed for estimating the parameters of damped and undamped exponentials in noise, but the performances of such techniques are generally known only in the undamped case. In this paper, we consider two estimation methods: the Kumaresan-Tufts method and the Matrix Pencil approach, and we obtain their estimation performances in the case of a single exponentially damped sinusoid. Assuming a high signal-to-noise ratio, closed form expressions for the bias and the variance of the damping factor are derived. The analytical results are confirmed using Monte Carlo simulations. The analysis indicates that the Matrix Pencil method exhibits a lower variance but has a greater bias than the Kumaresan-Tufts approach.","PeriodicalId":347658,"journal":{"name":"2004 12th European Signal Processing Conference","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128732802","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
A semidefinite programming (SDP) method for designing L-band frequency response masking (FRM) filters for multirate applications 采用半定规划(SDP)方法设计多速率l波段频率响应掩蔽(FRM)滤波器
2004 12th European Signal Processing Conference Pub Date : 2004-09-06 DOI: 10.5281/ZENODO.38267
H. Chen, K. Ho
{"title":"A semidefinite programming (SDP) method for designing L-band frequency response masking (FRM) filters for multirate applications","authors":"H. Chen, K. Ho","doi":"10.5281/ZENODO.38267","DOIUrl":"https://doi.org/10.5281/ZENODO.38267","url":null,"abstract":"This paper generalizes the modified frequency response masking (MFRM) filter structure for multirate applications. The overall filter is composed of low-delay FIR and IIR filters. A new SDP method is also proposed for designing these MFRM filters. Design results show that the structure and the design method are very useful to reduce the system delay and arithmetic complexity of traditional MFRM filters for multirate application. The application of the low-delay L-band MFRM filters to realize sharp-cutoff Discrete Fourier Transform (DFT) filter bank is also studied.","PeriodicalId":347658,"journal":{"name":"2004 12th European Signal Processing Conference","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116347692","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: 0
Beam design for a ping-pong-sampled linear receive array 乒乓采样线性接收阵列的波束设计
2004 12th European Signal Processing Conference Pub Date : 2004-09-06 DOI: 10.5281/ZENODO.38206
J. O. Coleman, D. Scholnik
{"title":"Beam design for a ping-pong-sampled linear receive array","authors":"J. O. Coleman, D. Scholnik","doi":"10.5281/ZENODO.38206","DOIUrl":"https://doi.org/10.5281/ZENODO.38206","url":null,"abstract":"Aliasing of far-field plane-wave information is avoided using only half the conventional Nyquist sample rate when sample timing is staggered on adjacent elements of a linear antenna array. The receive version of the array is examined here. The required upsampling beamformer structure is presented, and examples illustrate the pattern-design process.","PeriodicalId":347658,"journal":{"name":"2004 12th European Signal Processing Conference","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125816092","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
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