发布求助
文献互助 智能选刊 最新文献

Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings.最新文献

筛选
英文 中文
Time-frequency analysis of heart sounds using windowed and smooth windowed Wigner-ville distribution 心音的时频分析使用窗和平滑窗Wigner-ville分布
Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-08-26 DOI: 10.1109/ISSPA.2003.1224958
S. Daliman, A. Sha'ameri
{"title":"Time-frequency analysis of heart sounds using windowed and smooth windowed Wigner-ville distribution","authors":"S. Daliman, A. Sha'ameri","doi":"10.1109/ISSPA.2003.1224958","DOIUrl":"https://doi.org/10.1109/ISSPA.2003.1224958","url":null,"abstract":"Heart sounds and murmurs are time-varying signals that would best be analyzed using time-frequency analysis. Windowed Wigner-Ville distribution (WWVD) and smooth windowed Wigner-Ville distribution (SWWVD) are used to obtain the time-frequency representation (TFR) of the signal. Determination of parameter setting of WWVD and SWWVD eliminates the cross-terms and improve TFR. The accuracy of TFR is determined based on the mainlobe width and signal-to-interference ratio. It is found that the most accurate TFR can be achieved using SWWVD.","PeriodicalId":264814,"journal":{"name":"Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings.","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131183238","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
Reduced-rank adaptive chip-level MMSE equalization for the forward link of long-code DS-CDMA systems 长码DS-CDMA系统前向链路的降阶自适应片级MMSE均衡
Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-08-26 DOI: 10.1109/ISSPA.2003.1224748
B. Mouhouche, K. Abed-Meraim, N. Ibrahim, P. Loubaton
{"title":"Reduced-rank adaptive chip-level MMSE equalization for the forward link of long-code DS-CDMA systems","authors":"B. Mouhouche, K. Abed-Meraim, N. Ibrahim, P. Loubaton","doi":"10.1109/ISSPA.2003.1224748","DOIUrl":"https://doi.org/10.1109/ISSPA.2003.1224748","url":null,"abstract":"In this paper, we discuss the recently proposed downlink mobile receiver structure for long code DS-CDMA consisting of a chip level MMSE channel equalizer followed by descrambling and despreading. We show that the known pilot sequence can be exploited to estimate the chip-observation cross-correlation vector (needed to train the equalizer), and propose to use two low complexity reduced rank adaptive filtering algorithms for equalization: the stochastic gradient multistage Wiener filter (SG-MSWF), and the adaptive conjugate gradient reduced rank filter (ACGRRF). Simulations show that both algorithms attain close to optimal performance with reasonable complexity.","PeriodicalId":264814,"journal":{"name":"Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126299394","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: 5
Warped ARMA filters in high quality audio coding 翘曲的ARMA滤波器在高质量的音频编码
Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-07-01 DOI: 10.1109/ISSPA.2003.1224838
Mohamed Deriche, Daryl Ning
{"title":"Warped ARMA filters in high quality audio coding","authors":"Mohamed Deriche, Daryl Ning","doi":"10.1109/ISSPA.2003.1224838","DOIUrl":"https://doi.org/10.1109/ISSPA.2003.1224838","url":null,"abstract":"In this paper, a novel audio coder using the discrete wavelet transform (DWT) and a warped linear prediction (WLP) model, is proposed. In contrast to conventional LP, WLP allows for the control of frequency resolution to closely match the response of the human auditory system. The residual from the inverse WLP filtering is analyzed by a wavelet filterbank designed to approximate the critical bands. For monophonic signals sampled at 44.1 kHz, the coder achieves near transparent quality at an average bit-rate of 64 kb/s.","PeriodicalId":264814,"journal":{"name":"Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings.","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124272791","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
Stability-based cluster analysis applied to microarray data 基于稳定性的聚类分析应用于微阵列数据
Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-07-01 DOI: 10.1109/ISSPA.2003.1224814
C. Giurcăneanu, I. Tabus, I. Shmulevich, Wei Zhang
{"title":"Stability-based cluster analysis applied to microarray data","authors":"C. Giurcăneanu, I. Tabus, I. Shmulevich, Wei Zhang","doi":"10.1109/ISSPA.2003.1224814","DOIUrl":"https://doi.org/10.1109/ISSPA.2003.1224814","url":null,"abstract":"This paper studies the estimation of the number of clusters using the so-called stability-based approach, where clusters obtained for two subsets of the dataset are compared via a similarity index and the decision regarding the number of clusters is taken based on the statistics of the index over randomly selected subsets. We introduce a new similarity index s(/spl middot/,/spl middot/), and analyze the consistency of the estimator of the number of classes when k-means algorithm is used in conjunction with s(/spl middot/,/spl middot/). Various similarity indices are experimentally evaluated when comparing the \"true\" data partition with the partition obtained at each level of a hierarchical clustering tree. Finally, experimental results with real data are reported for a glioma microarray dataset.","PeriodicalId":264814,"journal":{"name":"Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings.","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116648320","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: 11
Medical images indexing and retrieval 医学图像索引和检索
Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-07-01 DOI: 10.1109/ISSPA.2003.1224671
D. Tsishkou, E. Bovbel, M. Liventseva
{"title":"Medical images indexing and retrieval","authors":"D. Tsishkou, E. Bovbel, M. Liventseva","doi":"10.1109/ISSPA.2003.1224671","DOIUrl":"https://doi.org/10.1109/ISSPA.2003.1224671","url":null,"abstract":"We present an approach for large medical images database indexing and retrieval using TTA10 algorithm. Our approach consist of primary and secondary tessellation stages, therefore it can be used in computer cluster with parallel multiprocessor architecture. We propose compact index structure, which increases systems scalability and achieves logarithmic complexity. Tree structured index in tree tessellation algorithm v.10 (TTA10) is optimized for balance monitoring and real-time subtree reorganization, avoiding of changes in the structure of the entire tree.","PeriodicalId":264814,"journal":{"name":"Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings.","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116884018","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
Minimisation and prediction of the error dynamic range in finite wordlength FIR based architectures: application to the 2-D orthogonal DWT 基于有限字长FIR结构中误差动态范围的最小化和预测:在二维正交小波变换中的应用
Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-07-01 DOI: 10.1109/ISSPA.2003.1224869
A. Benkrid, K. Benkrid, D. Crookes
{"title":"Minimisation and prediction of the error dynamic range in finite wordlength FIR based architectures: application to the 2-D orthogonal DWT","authors":"A. Benkrid, K. Benkrid, D. Crookes","doi":"10.1109/ISSPA.2003.1224869","DOIUrl":"https://doi.org/10.1109/ISSPA.2003.1224869","url":null,"abstract":"This paper analyses the effects of fixed-point arithmetic in FIR filter based architectures, based on the roundoff statistical noise model. A novel approach, which allows minimising the architecture's error dynamic range and predicting its value according to the wordlength fractional precision, is suggested. This permits a hardware designer to preset the fractional precision for the sought implementation accuracy. The efficiency of this approach is demonstrated through the 2D orthogonal Daubechies-8 DWT family.","PeriodicalId":264814,"journal":{"name":"Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings.","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117166532","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
Analysis of pathological voices by speech processing 基于语音处理的病理性语音分析
Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-07-01 DOI: 10.1109/ISSPA.2003.1224716
C. Adnene, B. Lamia, M. Mounir
{"title":"Analysis of pathological voices by speech processing","authors":"C. Adnene, B. Lamia, M. Mounir","doi":"10.1109/ISSPA.2003.1224716","DOIUrl":"https://doi.org/10.1109/ISSPA.2003.1224716","url":null,"abstract":"The authors present a new speech processing software designed for clinical observation of vocal disorders, speech assessments and some neurological pathologies identification. By using a recorded speech sound, we extract the vocal parameters (pitch period, formant frequencies, vocal timbre, jitter, shimmer) which depend on the speaker physical-psychological state and the linguistic structure of language. The obtained results are compared with the normal values in order to an eventual disorder classification, a pathological prediction and prostheses assessments.","PeriodicalId":264814,"journal":{"name":"Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings.","volume":"126 34","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120935399","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: 9
Region-based and scalable image compression by wavelet localization 基于小波定位的区域可伸缩图像压缩
Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-07-01 DOI: 10.1109/ISSPA.2003.1224911
Mong-shu Lee
{"title":"Region-based and scalable image compression by wavelet localization","authors":"Mong-shu Lee","doi":"10.1109/ISSPA.2003.1224911","DOIUrl":"https://doi.org/10.1109/ISSPA.2003.1224911","url":null,"abstract":"In this paper a wavelet and region-based image compression scheme was proposed. The wavelet coefficients at each level related to a square or circular interested regions were accurately located. Methods of combining localization of wavelets with weighting factors are presented. This approach overcomes the difficulty arising from JPEG and exhibits the ability to allow users to construct the region of interest with PSNR scalability in a compressed image.","PeriodicalId":264814,"journal":{"name":"Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127345460","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
Time-varying multiuser detection for DS-CDMA in doubly-selective channels 双选择信道中DS-CDMA时变多用户检测
Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-07-01 DOI: 10.1109/ISSPA.2003.1224746
G. Leus, M. Moonen
{"title":"Time-varying multiuser detection for DS-CDMA in doubly-selective channels","authors":"G. Leus, M. Moonen","doi":"10.1109/ISSPA.2003.1224746","DOIUrl":"https://doi.org/10.1109/ISSPA.2003.1224746","url":null,"abstract":"The problem of multiuser detection for DS-CDMA in doubly-selective (timeand frequency-selective) channels is considered, and a time-varying multiuser detector (TV-MUD) to solve this problem is proposed. Using a basis expansion model (BEM) to model the doubly-selective channel and the TV-MUD, we derive a closed-form expression for the BEM coefficients of the TV-MUD as a function of the BEM coefficients of the doubly-selective channel. The criterion we use is the symbol mean-square error.","PeriodicalId":264814,"journal":{"name":"Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings.","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123251022","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
Trade off between robustness and R-D performance in zero padding multiple description 在零填充多重描述的鲁棒性和R-D性能之间进行权衡
Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-07-01 DOI: 10.1109/ISSPA.2003.1224648
G. Olmo, T. Tillo
{"title":"Trade off between robustness and R-D performance in zero padding multiple description","authors":"G. Olmo, T. Tillo","doi":"10.1109/ISSPA.2003.1224648","DOIUrl":"https://doi.org/10.1109/ISSPA.2003.1224648","url":null,"abstract":"Multiple description coding (MDC) by sequence under-sampling can be implemented by pre-and post-processing, so it can be associated to most standards for image/video communications. Unfortunately, this method suffers from high side distortion when only one description is received. In order to overcome this limitation, over sampling of sequence via zero padding in the DFT domain has been proposed to improve correlation between subsequent samples, so achieving better estimation of the lost description. The price to be paid is a degradation of the performance in case both descriptions are received. In this paper we present analytical results of zero padded MDC, which can help in the selection of the best trade-off between performance and over sampling factor.","PeriodicalId":264814,"journal":{"name":"Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings.","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123315406","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
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