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Fourth International Symposium on Signal Processing and Its Applications最新文献

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Spectral Variability As A Source Of Fluctuations Within Received Sonar Fm Pulses 作为接收声纳调频脉冲波动源的频谱变异性
Fourth International Symposium on Signal Processing and Its Applications Pub Date : 1900-01-01 DOI: 10.1109/ISSPA.1996.615174
Adrian D. Jones, S. Lourey, Ashley I. Lursson
{"title":"Spectral Variability As A Source Of Fluctuations Within Received Sonar Fm Pulses","authors":"Adrian D. Jones, S. Lourey, Ashley I. Lursson","doi":"10.1109/ISSPA.1996.615174","DOIUrl":"https://doi.org/10.1109/ISSPA.1996.615174","url":null,"abstract":"Fh4 sonar pulses transmitted in a multi-path shallow water environment have been observed to exhibit substantial fluctuations in amplitude within the pulse duration. Corresponding CW pulses are much less distorted. This frequency-related phenomenon has been studied as an example of spectral variability. By comparing measured results with theoretical expectations, it is shown that the characteristic time for the multi-path interference field to establish is directly linked to the distortions of the FM pulses. These results show that the extent of pulse distortion may be estimated from a knowledge of the sonar environment.","PeriodicalId":359344,"journal":{"name":"Fourth International Symposium on Signal Processing and Its Applications","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133125444","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 Neural Network-Based Feedforward Architecture for Recorvering 3-D Motion Information of Curved Surfaces 一种基于神经网络的曲面三维运动信息前馈恢复体系
Fourth International Symposium on Signal Processing and Its Applications Pub Date : 1900-01-01 DOI: 10.1109/ISSPA.1996.615098
Yi Sun, M. Bayoumi
{"title":"A Neural Network-Based Feedforward Architecture for Recorvering 3-D Motion Information of Curved Surfaces","authors":"Yi Sun, M. Bayoumi","doi":"10.1109/ISSPA.1996.615098","DOIUrl":"https://doi.org/10.1109/ISSPA.1996.615098","url":null,"abstract":"A neural network-based system for recovering 3-D motion information of curved surfaces from 2-D optical flow parameters is proposed in this paper. A feedforward network architecture that has explicit and concise physical meaning is adopted. A self tuning scheme with an unsupervised learning rule, that controls the dynamics of the system, is also employed. Moreover, a mechanism for preattentative focus, which effectively suppresses the spurious solution of the estimation, is embraced as well.","PeriodicalId":359344,"journal":{"name":"Fourth International Symposium on Signal Processing and Its Applications","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123623028","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
Discrete Tree Rational Transforms 离散树有理变换
Fourth International Symposium on Signal Processing and Its Applications Pub Date : 1900-01-01 DOI: 10.1109/ISSPA.1996.615775
A. Torokhti, S. Elhay, W. Moran, P. Howlett, D. Gray
{"title":"Discrete Tree Rational Transforms","authors":"A. Torokhti, S. Elhay, W. Moran, P. Howlett, D. Gray","doi":"10.1109/ISSPA.1996.615775","DOIUrl":"https://doi.org/10.1109/ISSPA.1996.615775","url":null,"abstract":"1. ABSTRACT This paper describes a new approach to discrete nonlinear transform constructions. The approach combines rational approximation idea with a special procedures termed tree processing. Such combinations permit the exploitation of the advantages of specific numerical methods and lead to a considerable reduction in cost of data transmission.","PeriodicalId":359344,"journal":{"name":"Fourth International Symposium on Signal Processing and Its Applications","volume":"94 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126140727","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
Satellite Beacon Receiver Improvement Using Digital Signal Processing 利用数字信号处理技术改进卫星信标接收机
Fourth International Symposium on Signal Processing and Its Applications Pub Date : 1900-01-01 DOI: 10.1109/ISSPA.1996.615088
C. Kikkert, B. Bowthorpe, G. H. Allen
{"title":"Satellite Beacon Receiver Improvement Using Digital Signal Processing","authors":"C. Kikkert, B. Bowthorpe, G. H. Allen","doi":"10.1109/ISSPA.1996.615088","DOIUrl":"https://doi.org/10.1109/ISSPA.1996.615088","url":null,"abstract":"Typical satellite receivers for monitoring the low power beacons on communication satellites in order to gather statistics on the effects of rain on satellite communication have analogue circuits in the down conversion and frequency control process that are costly to align. The Authors have designed such a satellite receiver which uses a complex down conversion and frequency control system in order to frequency shift the 12.75 GHz beacon signal to the centre of the 100 Hz bandwidth final intermediate frequency (IF) filter centred at 3 kHz [l]. This paper describes a digital down conversion system which simplifies the frequency control and thus allows a significant reduction in hardware complexity and manufacturing cost.","PeriodicalId":359344,"journal":{"name":"Fourth International Symposium on Signal Processing and Its Applications","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130331935","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
Interactive Dsp Debugging in the Multi-Processor Huron Environment 交互式Dsp调试在多处理器休伦环境
Fourth International Symposium on Signal Processing and Its Applications Pub Date : 1900-01-01 DOI: 10.1109/ISSPA.1996.615730
A. Reilly, D. McGrath
{"title":"Interactive Dsp Debugging in the Multi-Processor Huron Environment","authors":"A. Reilly, D. McGrath","doi":"10.1109/ISSPA.1996.615730","DOIUrl":"https://doi.org/10.1109/ISSPA.1996.615730","url":null,"abstract":"This paper describes a DSP application development platform. The Lake DSP “Huron” hardware platform is a Miaosofi Windows-based Digital Signal Processing (DSP) system designed primarily for professional audio applications. “Huron” contains a 256 channel digital audio bus running at audio sample rates (nominally 48kHz). External audio signals are interfaced to the system by input and output modules which plug into an I/O card. Multiple DSP cards can be added to the system, each with four processors, SUM, DRAM, and inter-processor communication facilities. A development and debugging system integrated with Lake application software has been developed for this platform. The development environment consists of an object oriented Host Interface Library, an object oriented Debug Library, and a debugger application (LakeMon). The same debug environment can be used to debug DSP firmware when no host application software has been written, right through to the observation and debugging of a complete GUl-driven application.","PeriodicalId":359344,"journal":{"name":"Fourth International Symposium on Signal Processing and Its Applications","volume":"126 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115586393","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
Compression of Fingerprint Images Using Wavelet Transform and Vector Quantization 基于小波变换和矢量量化的指纹图像压缩
Fourth International Symposium on Signal Processing and Its Applications Pub Date : 1900-01-01 DOI: 10.1109/ISSPA.1996.615780
M. Shnaider, A. Paplinski
{"title":"Compression of Fingerprint Images Using Wavelet Transform and Vector Quantization","authors":"M. Shnaider, A. Paplinski","doi":"10.1109/ISSPA.1996.615780","DOIUrl":"https://doi.org/10.1109/ISSPA.1996.615780","url":null,"abstract":"In this paper the problem of compression of fingerprint images is addressed. The presented method utilises wavelet transform followed by vector quantization. We compare our approach with the FBI fingerprint compression standard based on wavelet transform and scalar quantization. Due to the use of the vector instead of scalar quantization, a simplified wavelet expansion tree structure is achieved. This leads to significant reduction in time of encoding without noticeable loss in the quality of reconstructed images.","PeriodicalId":359344,"journal":{"name":"Fourth International Symposium on Signal Processing and Its Applications","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122473411","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
Robust Nonlinear Equalisation 鲁棒非线性均衡
Fourth International Symposium on Signal Processing and Its Applications Pub Date : 1900-01-01 DOI: 10.1109/ISSPA.1996.615116
G. Einicke, L. White
{"title":"Robust Nonlinear Equalisation","authors":"G. Einicke, L. White","doi":"10.1109/ISSPA.1996.615116","DOIUrl":"https://doi.org/10.1109/ISSPA.1996.615116","url":null,"abstract":"This paper describes the design of equalisers for nonlinear channels. The equaliser arises via the construction of a state observer, using the linearisation approach akin to the extended Kalman filter. A H , method is used to provide some robustness to linearisation errors.","PeriodicalId":359344,"journal":{"name":"Fourth International Symposium on Signal Processing and Its Applications","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123997527","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
An Efficient Spectral Envelope Quantization Using Modified Line Spectrum Frequency Pair Representation 基于改进的线谱频率对表示的有效频谱包络量化
Fourth International Symposium on Signal Processing and Its Applications Pub Date : 1900-01-01 DOI: 10.1109/ISSPA.1996.615677
Won Cheol Lee, M. Bae
{"title":"An Efficient Spectral Envelope Quantization Using Modified Line Spectrum Frequency Pair Representation","authors":"Won Cheol Lee, M. Bae","doi":"10.1109/ISSPA.1996.615677","DOIUrl":"https://doi.org/10.1109/ISSPA.1996.615677","url":null,"abstract":"This paper introduces a new type of representation of the line spectrum pairs as a promising alternative used for transmitting the LPC parameters. Major contribution in this paper is that the vocal track information embedded on the spectral envelope can be represented in terms of the reduced number of LSF compared to the conventional without causing any major spectral distortion.","PeriodicalId":359344,"journal":{"name":"Fourth International Symposium on Signal Processing and Its Applications","volume":"5 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124199275","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
Comparison of Four Distance Measures for Long Time Text-Independent Speaker Identification 四种距离度量在长时间文本无关说话人识别中的比较
Fourth International Symposium on Signal Processing and Its Applications Pub Date : 1900-01-01 DOI: 10.1109/ISSPA.1996.615758
S. Ong, S. Sridharan, Cheng-Hong Yang, M. Moody
{"title":"Comparison of Four Distance Measures for Long Time Text-Independent Speaker Identification","authors":"S. Ong, S. Sridharan, Cheng-Hong Yang, M. Moody","doi":"10.1109/ISSPA.1996.615758","DOIUrl":"https://doi.org/10.1109/ISSPA.1996.615758","url":null,"abstract":"In this study, four distance measures were compared for text-independent speaker identitication using the long time statistical feature averaging method. The four methods were the City block, the Euclidean, the Weighted Euclidean, and the Mahalanobis distance measures. Identification decision was based on the minimum distance criterion. This study showed that the Weighted Euclidean distance measure performed best, and the Mahalanobis distance measure did not perform well. An explanation is advanced for this result.","PeriodicalId":359344,"journal":{"name":"Fourth International Symposium on Signal Processing and Its Applications","volume":"480 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123034873","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
Physical Interpretation for Dyadic Shift 并矢移位的物理解释
Fourth International Symposium on Signal Processing and Its Applications Pub Date : 1900-01-01 DOI: 10.1109/ISSPA.1996.615774
Minglu Jin, K. Kwak
{"title":"Physical Interpretation for Dyadic Shift","authors":"Minglu Jin, K. Kwak","doi":"10.1109/ISSPA.1996.615774","DOIUrl":"https://doi.org/10.1109/ISSPA.1996.615774","url":null,"abstract":"In this paper, based on the copy feature of Walsh functions and copy generation theory of signals, the physical interpretation of the Dyadic shift is introduced. This dyadic shift, corresponding to two sequences, related the corresponding copy information IO generate different sequences.","PeriodicalId":359344,"journal":{"name":"Fourth International Symposium on Signal Processing and Its Applications","volume":"169 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115449110","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
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