发布求助
文献互助 智能选刊 最新文献

Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005.最新文献

筛选
英文 中文
On the convergence of Bayesian adaptive filtering 关于贝叶斯自适应滤波的收敛性
Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005. Pub Date : 2005-08-28 DOI: 10.1109/ISSPA.2005.1581054
T. Sadiki, D. Slock
{"title":"On the convergence of Bayesian adaptive filtering","authors":"T. Sadiki, D. Slock","doi":"10.1109/ISSPA.2005.1581054","DOIUrl":"https://doi.org/10.1109/ISSPA.2005.1581054","url":null,"abstract":"Standard adaptive filtering algorithms, including the popular LMS and RLS algorithms, possess only one parameter (stepsize, forgetting factor) to adjust the tracking speed in a nonstationary environment. Furthermore, existing techniques for the automatic adjustment of this parameter are not totally satisfactory and are rarely used. In this paper we pursue the concept of Bayesian Adaptive Filtering (BAF) that we introduced earlier, based on modeling the optimal adptive filter coefficients as a stationary vector process, in particular a diagonal AR(1) model. Optimal adaptive filtering with such a state model becomes Kalman filtering. The AR(1) model parameters are determined with an adaptive version of the EM algorithm, which leads to linear prediction on reconstructed optimal filter correlations, and hence a meaningful approximation/estimation compromise. In this paper we will introduce the convergence behavior of the adaptive part.","PeriodicalId":385337,"journal":{"name":"Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005.","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129037127","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
Blind identification of quadratic systems under i.i.d. excitation using genetic algorithms 基于遗传算法的i - id激励下二次系统盲辨识
Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005. Pub Date : 2005-08-28 DOI: 10.1109/ISSPA.2005.1580975
I. Cherif, S. Abid, F. Fnaiech
{"title":"Blind identification of quadratic systems under i.i.d. excitation using genetic algorithms","authors":"I. Cherif, S. Abid, F. Fnaiech","doi":"10.1109/ISSPA.2005.1580975","DOIUrl":"https://doi.org/10.1109/ISSPA.2005.1580975","url":null,"abstract":"In this paper, a new approach to quadratic blind system identification is proposed. This approach enables a nonlinear relationship between model kernels and output cumulants up to the third order by means of Genetic Algorithm (GA). Simulation results are presented to show good performance of this approach.","PeriodicalId":385337,"journal":{"name":"Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005.","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129149926","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
Optical signal processing for fiber Bragg grating based wear sensors 基于光纤光栅的磨损传感器的光信号处理
Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005. Pub Date : 2005-08-28 DOI: 10.1109/ISSPA.2005.1581076
E. Li, J. Xi, J. Chicharo
{"title":"Optical signal processing for fiber Bragg grating based wear sensors","authors":"E. Li, J. Xi, J. Chicharo","doi":"10.1109/ISSPA.2005.1581076","DOIUrl":"https://doi.org/10.1109/ISSPA.2005.1581076","url":null,"abstract":"Abstract In this study, we propose a simplified signal processing scheme for fiber Bragg grating (FBG) based wearsensing. Instead of using a chirped FBG and detecting the bandwidth, we use uniform gratings as sensors andmeasure the optical power reflected by the sensing grating to determine the length of the sensor grating,hence detect the wear. We demonstrate by the experiments that the proposed method is feasible andpractical. The advantage of the proposed method lies in the fact that structure of the wear sensing system issimplified and therefore the cost can be significantly reduced. The principle of the proposed method, thedesign of the wear sensor, and the experiments are described. Publication Details This paper originally appeared as: Li, E, Xi, J & Chicharo, J, Optical signal processing for fiber Bragg gratingbased wear sensors, Proceedings of the Eighth International Symposium on Signal Processing and ItsApplications, 28-31 August 2005, vol 2, 867-870. Copyright IEEE 2005.","PeriodicalId":385337,"journal":{"name":"Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005.","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116652610","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
Comparing audio and visual information for speech processing 比较音频和视觉信息的语音处理
Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005. Pub Date : 2005-08-28 DOI: 10.1109/ISSPA.2005.1580195
David Dean, P. Lucey, S. Sridharan, T. Wark
{"title":"Comparing audio and visual information for speech processing","authors":"David Dean, P. Lucey, S. Sridharan, T. Wark","doi":"10.1109/ISSPA.2005.1580195","DOIUrl":"https://doi.org/10.1109/ISSPA.2005.1580195","url":null,"abstract":"This paper examines the utility of audio-visual speech for \u0000the two related tasks of speech and speaker recognition. \u0000A study of the confusion that exists between speaker and \u0000speech elements was performed to show that principal component \u0000analysis (PCA) based visual speech is considerably \u0000better for the task of speaker recognition than for speech. \u0000Decision fusion speech and speaker recognition engines \u0000were also tested under various levels of acoustic degradation \u0000to find that the optimal fusion configuration for speaker \u0000recognition was substantially different than that for speech. \u0000These results highlight the problem of employing similar \u0000visual features for both speech and speaker recognition.","PeriodicalId":385337,"journal":{"name":"Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131092071","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 comparative performance measure of some timefrequency distributions for Arabic plosive-vowel transition using Renyi criterion 用Renyi标准对阿拉伯语爆破元音转换的一些时频分布进行比较
Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005. Pub Date : 2005-08-28 DOI: 10.1109/ISSPA.2005.1581006
D. Boutana
{"title":"A comparative performance measure of some timefrequency distributions for Arabic plosive-vowel transition using Renyi criterion","authors":"D. Boutana","doi":"10.1109/ISSPA.2005.1581006","DOIUrl":"https://doi.org/10.1109/ISSPA.2005.1581006","url":null,"abstract":"The paper presents a quantitative comparative study of some time-frequency distributions i.e (TFDs). The comparison based on the Renyi criterion is achieved on synthetic as well real-life data. In particular, our application is made on the real consonant-vowel transition that represents a very good example for nonstationary case and speech application. We show that a recently proposed TFD give a high time–frequency resolution with suppressing the undesirable cross-terms in the multicomponent signal. 1. INTRODUCTION In this paper, we present a quantitative comparative study between some existing time-frequency distributions (TFDs) in the analysis of multi-component signals. In the comparison, we consider the cross-terms suppression and the high-energy concentration of the signal around its instantaneous frequency (IF).The widely used spectrogram (SP), which is in general a cross-terms free TFD, suffers from the undesirable tradeoff between time resolution and frequency resolution [1],","PeriodicalId":385337,"journal":{"name":"Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005.","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132350047","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
Design of secam video encoder and decoder system using modified anti-cloche filter, BPF and error-free square root 采用改进的抗时钟滤波器、BPF和无误差平方根的secam视频编解码器系统的设计
Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005. Pub Date : 2005-08-28 DOI: 10.1109/ISSPA.2005.1580260
Ju-hyun Kim, Jooyoung Ha, B. Kang
{"title":"Design of secam video encoder and decoder system using modified anti-cloche filter, BPF and error-free square root","authors":"Ju-hyun Kim, Jooyoung Ha, B. Kang","doi":"10.1109/ISSPA.2005.1580260","DOIUrl":"https://doi.org/10.1109/ISSPA.2005.1580260","url":null,"abstract":"In this paper, we propose the Sequentiel Couleur Avec Memoire or Sequential Color with Memory (SECAM) video encoder system using modified anti-cloche filters and the SECAM video decoder system using a band pass filter (BPF) and an error-free square root. The SECAM encoder requires an anti-cloche filter recommended by International Telecommunication Union Recommendation (ITU-R) Broadcasting service Television (BT) 470. However, the design of the anti-cloche filter is difficult. It is because the frequency response of the anti-cloche is very sharp around rejection-frequency area. So, we convert the filter into a high pass filter (HPF) by shifting the rejection frequency of 4.286MHz to 0Hz frequency. The design of HPF becomes very easy, compared to that of the anti-cloche filter. The proposed decoder also uses an error-free square root, two differentiators, and trigonometric functions to extract color-component information of Db and Dr accurately from frequency modulation (FM) signals in SECAM systems. The proposed systems are experimentally demonstrated with ALTERA FPGA APEX20KE EP20K1000EBC652-3 device and TV sets.","PeriodicalId":385337,"journal":{"name":"Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005.","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132816663","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
A novel technique to overcome wall ambiguities in through-the-wall radar imaging applications 一种克服穿壁雷达成像中壁模糊的新技术
Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005. Pub Date : 2005-08-28 DOI: 10.1109/ISSPA.2005.1580993
Genyuan Wang, M. Amin
{"title":"A novel technique to overcome wall ambiguities in through-the-wall radar imaging applications","authors":"Genyuan Wang, M. Amin","doi":"10.1109/ISSPA.2005.1580993","DOIUrl":"https://doi.org/10.1109/ISSPA.2005.1580993","url":null,"abstract":"In the through-the-wall radar imaging applications, errors in wall parameters cause targets to be imaged away from their true positions. The shifts of target locations depend on the estimation errors in the wall thickness and dielectric constant as well as the target locations with respect to the antenna array. In this paper, we propose a novel technique that enables proper imaging to be performed with unknown wall characteristics. In this technique, the imaging is performed for different sets of the assumed wall parameters at different standoff distances from the wall. For each set of wall parameters, the combined image for different standoff distances is obtained. A focusing metric is then applied to determine the wall characteristics corresponding to the maximum sharpness of the image. The proposed standoff-based imaging technique has several advantages in practical use, including safety, covertness, and rapid acquisition time.","PeriodicalId":385337,"journal":{"name":"Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005.","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132249325","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: 4
Current trends in joint audio-video signal processing: a review 音视频联合信号处理的研究进展
Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005. Pub Date : 2005-08-28 DOI: 10.1109/ISSPA.2005.1580198
Roland Göcke
{"title":"Current trends in joint audio-video signal processing: a review","authors":"Roland Göcke","doi":"10.1109/ISSPA.2005.1580198","DOIUrl":"https://doi.org/10.1109/ISSPA.2005.1580198","url":null,"abstract":"Multimodal signal processing has gained a lot of significance in recent years due to advances in computer technology as well as more sophisticated sensors being available. One example is the joint processing of audio and video signals in a variety of applications. This paper serves as a broad introduction to the special session on “Audio-Video Signal Processing and its Applications”. The paper reviews current trends and developments in joint audio-video (AV) signal processing and gives an overview of current issues in theory and application in this area. We focus on speech processing, person authentication, and affective sensing as examples. An overview of available AV data corpora is given.","PeriodicalId":385337,"journal":{"name":"Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005.","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134080061","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: 16
Blind separation of audio sources using modal decomposition 使用模态分解的音频源盲分离
Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005. Pub Date : 2005-08-28 DOI: 10.1109/ISSPA.2005.1580972
A. Aïssa-El-Bey, K. Abed-Meraim, Y. Grenier
{"title":"Blind separation of audio sources using modal decomposition","authors":"A. Aïssa-El-Bey, K. Abed-Meraim, Y. Grenier","doi":"10.1109/ISSPA.2005.1580972","DOIUrl":"https://doi.org/10.1109/ISSPA.2005.1580972","url":null,"abstract":"This paper introduces new algorithms for the blind separation of audio sources using modal decomposition. Indeed, audio signals and, in particular, musical signals can be well approximated by a sum of damped sinusoidal (modal) components. Based on this representation, we propose a two steps approach consisting of a signal analysis (extraction of the modal components) followed by a signal synthesis (pairing of the components belonging to the same source) using vector clustering. For the signal analysis, two algorithms are considered and compared: namely the EMD (Empirical Mode Decomposition) algorithm and a parametric estimation algorithm using ESPRIT technique. A major advantage of the proposed method resides in its ability to separate more sources than sensors. Simulation results are given to compare and assess the performances of the proposed algorithms.","PeriodicalId":385337,"journal":{"name":"Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005.","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134465189","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: 7
Interpolation and noise reduction in MIMO-OFDM - a complexity driven perspective MIMO-OFDM的插值与降噪——复杂性驱动的视角
Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005. Pub Date : 2005-08-28 DOI: 10.1109/ISSPA.2005.1580216
T. Haustein, S. Schiffermüller, V. Jungnickel, M. Schellmann, T. Michel, G. Wunder
{"title":"Interpolation and noise reduction in MIMO-OFDM - a complexity driven perspective","authors":"T. Haustein, S. Schiffermüller, V. Jungnickel, M. Schellmann, T. Michel, G. Wunder","doi":"10.1109/ISSPA.2005.1580216","DOIUrl":"https://doi.org/10.1109/ISSPA.2005.1580216","url":null,"abstract":"We propose a frequency sample interpolation scheme for MIMO-OFDM which can handle arbitrary distributed input samples and can be used for all standard OFDM schemes. We derive how the quality of the channel estimation and the resulting BER degradation can be controlled by the parameters training sequence length Lp and the number of measured frequency samples Dm. The performance improving procedure of interpolation or de-noising of the channel estimates is also feasible with real-valued samples. Furthermore, we compare schemes to calculate MIMO-OFDM filters in terms of absolute and relative computational complexity. For the MIMO detection we assume a linear zero-forcing filter which can be calculated very efficiently for all OFDM-sub-carriers separately or by exploiting matrix wise interpolation of the adjoints and determinants of the channel matrix and Cramer’s rule for the calculation of the inverses.","PeriodicalId":385337,"journal":{"name":"Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005.","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133367140","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信