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Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555)最新文献

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Evaluation of the G.729 speech coder with pathological voice samples 病理语音样本对G.729语音编码器的评价
Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555) Pub Date : 2001-05-13 DOI: 10.1109/CCECE.2001.933740
V. Parsa, D. Jamieson
{"title":"Evaluation of the G.729 speech coder with pathological voice samples","authors":"V. Parsa, D. Jamieson","doi":"10.1109/CCECE.2001.933740","DOIUrl":"https://doi.org/10.1109/CCECE.2001.933740","url":null,"abstract":"The performance of a speech coder is typically evaluated with a battery of objective and subjective tests. Objective measures of speech quality attempt to measure the \"distance\" between the original and coder-processed speech, while subjective testing involves obtaining mean opinion score (MOS) for the coder-processed speech. In general these tests are performed with speech samples collected from normal talkers, and no tests are conducted to determine how a speech coder interacts with abnormal speech samples. This paper focuses on the performance of the ITU standardized G.729 speech coder with speech and voice samples from disordered talkers. Standardized objective measures of speech coder quality and acoustic measures of voice are used to show that there is a significant drop in the performance of the G.729 speech coder when abnormal speech samples were used.","PeriodicalId":184523,"journal":{"name":"Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129251112","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
Simulation of switching cells by programming by constraints 基于约束编程的开关单元仿真
Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555) Pub Date : 2001-05-13 DOI: 10.1109/CCECE.2001.933582
G. Amoussou, G. Pesant, S. Pierre
{"title":"Simulation of switching cells by programming by constraints","authors":"G. Amoussou, G. Pesant, S. Pierre","doi":"10.1109/CCECE.2001.933582","DOIUrl":"https://doi.org/10.1109/CCECE.2001.933582","url":null,"abstract":"This article proposes a model based on the techniques developed in programming by constraint for resolving the problems of the simulation of switching cells in personal communication networks. The idea is based on exploiting in an active way the relations between the constraints for reducing the exploration space, on which the research strategies of the solution are applied in order to converge on the better solutions. As a result, programming by constraints is a simple but robust method suited to the resolution of the combined problems such as those in the simulation of the switching cells.","PeriodicalId":184523,"journal":{"name":"Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116285466","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 robust model parameter extraction technique based on meta-evolutionary programming for high speed/high frequency package interconnects 基于元进化规划的高速高频封装互连鲁棒模型参数提取技术
Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555) Pub Date : 2001-05-13 DOI: 10.1109/CCECE.2001.933604
N. Damavandi, S. Safavi-Naeini
{"title":"A robust model parameter extraction technique based on meta-evolutionary programming for high speed/high frequency package interconnects","authors":"N. Damavandi, S. Safavi-Naeini","doi":"10.1109/CCECE.2001.933604","DOIUrl":"https://doi.org/10.1109/CCECE.2001.933604","url":null,"abstract":"A high efficiency version of the evolutionary algorithm called meta-evolutionary programming (meta-EP) is proposed for extraction of the circuit model parameters of the basic structures in the complex high speed/high frequency package interconnects such as flip chip interconnects. The algorithm is integrated with a diversity enhancement method called niching in order to decrease the chance of premature convergence. The method is applied to model parameter extraction of some flip chip interconnects such as coplanar waveguide (CPW) and stripline transitions in multi-layered structures. The results of this parametric modeling in all cases show excellent success with high accuracy in a wide range of frequency up to 50 GHz. Comparison with results, achieved from other techniques in these cases, proves the robustness of the proposed method.","PeriodicalId":184523,"journal":{"name":"Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124538612","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
Media conversions to support mobile users 支持移动用户的媒体转换
Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555) Pub Date : 2001-05-13 DOI: 10.1109/CCECE.2001.933753
A. Vetro, Huifang Sun
{"title":"Media conversions to support mobile users","authors":"A. Vetro, Huifang Sun","doi":"10.1109/CCECE.2001.933753","DOIUrl":"https://doi.org/10.1109/CCECE.2001.933753","url":null,"abstract":"The purpose of this paper is to provide an overview of the signal processing techniques that will allow mobile users to enjoy a wide range of multimedia services. In the near future, mobile terminals will be equipped with the capability to decode and playback a variety of audio-visual formats. With the increase in number of formats and the presence of various network, terminal and user constraints, media conversion is expected to play a key role in the delivery of content to mobile users. This paper reviews some of the basic technology required for media conversion and provides some discussion about the types of services that could be supported.","PeriodicalId":184523,"journal":{"name":"Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127678273","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: 14
Simulation of the 3-phase double-feed induction motor (DFIM): a range of stable synchronous operation 仿真三相双馈感应电动机(DFIM):在一定范围内稳定同步运行
Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555) Pub Date : 2001-05-13 DOI: 10.1109/CCECE.2001.933741
D. P. Gonzaga, Y. Burian
{"title":"Simulation of the 3-phase double-feed induction motor (DFIM): a range of stable synchronous operation","authors":"D. P. Gonzaga, Y. Burian","doi":"10.1109/CCECE.2001.933741","DOIUrl":"https://doi.org/10.1109/CCECE.2001.933741","url":null,"abstract":"A physical system has been simulated so as to obtain parameters as near to the real values as possible, to enable the physical construction of the system to a high precision. The mathematical model of the DFIM-load system with symmetrical supplies, expressed in \"dq\" variables, can be simulated in various ways. For this work the package SIMNON/sup TM/ was chosen. It is recommended for solving systems of differential equations presented in the form of equations of state, which are one way of modeling an electromechanical system. Some simulated situations are shown, including the stability limits of the DFIM in synchronous operation, which are compared with some experimental results.","PeriodicalId":184523,"journal":{"name":"Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555)","volume":"120 8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126308256","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
A method of acquiring and refining a signal depicted on an image 一种获取和细化描绘在图象上的信号的方法
Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555) Pub Date : 2001-05-13 DOI: 10.1109/CCECE.2001.933629
K. Zarmakoupis, J. Kappatou
{"title":"A method of acquiring and refining a signal depicted on an image","authors":"K. Zarmakoupis, J. Kappatou","doi":"10.1109/CCECE.2001.933629","DOIUrl":"https://doi.org/10.1109/CCECE.2001.933629","url":null,"abstract":"A tool is developed in order to acquire the analytical mathematical form of a signal depicted on an image. The resulting mathematical form can be used for simulation and survey purposes concerning the signal's originating system. The mathematical method, on which the tool is based, is presented in two sections. In the first section the signal's data set extraction algorithm is presented, while in the second section the analytical form representation procedure is outlined. A computer program realizing the proposed procedure has been constructed. Finally an oscilloscope printout is used to point out the method's validity and demonstrate the manageability of the software-implemented tool.","PeriodicalId":184523,"journal":{"name":"Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555)","volume":"49 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132360325","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
Towards gestalt telehealth: considering social, ethical and cultural issues 迈向格式塔式远程保健:考虑社会、伦理和文化问题
Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555) Pub Date : 2001-05-13 DOI: 10.1109/CCECE.2001.933650
R. Bali, R. Naguib
{"title":"Towards gestalt telehealth: considering social, ethical and cultural issues","authors":"R. Bali, R. Naguib","doi":"10.1109/CCECE.2001.933650","DOIUrl":"https://doi.org/10.1109/CCECE.2001.933650","url":null,"abstract":"Telehealth is a flexible way of working which covers a wide range of health-related activities and often involves remote-working from a traditional healthcare centre for a significant proportion of work time. Contemporary medical-related IT techniques, such as telehealth, have specific properties that cannot be derived from the summation of their component parts (demonstrating a gestalt or unified whole). Implementation of telehealth schemes has major social, ethical and organizational culture implications upon which this paper focuses. Developments in IT, social and ethical considerations, governmental policies and commercial objectives need to be examined and understood in order to fully exploit any benefits. Whilst this research further supports earlier conclusions about the suitability of conceptual models for IT-based implementations, further evidence will be required before constructing a conceptual framework.","PeriodicalId":184523,"journal":{"name":"Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130053343","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: 14
A dynamic programming approach to complex allocation in a DSP pipelined processor DSP流水线处理器中复杂分配的动态规划方法
Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555) Pub Date : 2001-05-13 DOI: 10.1109/CCECE.2001.933608
R. Muresan, C. Gebotys
{"title":"A dynamic programming approach to complex allocation in a DSP pipelined processor","authors":"R. Muresan, C. Gebotys","doi":"10.1109/CCECE.2001.933608","DOIUrl":"https://doi.org/10.1109/CCECE.2001.933608","url":null,"abstract":"This paper describes a deterministic non-serial dynamic programming technique applicable to a code optimization problem for the Star Core 140 (SC140) DSP processor. The code optimization problem analyzed is an optimal register allocation problem that minimizes the expected number of execution sets with a two-word prefix for the SC140 core applications based on two probabilistic allocation policies. We introduce two basic algorithms, a linear bridging algorithm and a non-linear bridging algorithm (supporting loops), that solve the specific register allocation problem for an assembly language code block. All algorithms and methods are applied to a variety of SC140 assembly code applications. The optimized assembly language codes generated show an average of 68%, improvement in overheads and an average of 4.44% code size reduction at a very small increase in the CPU time costs. The basic principles and methods developed throughout this research are general and are applicable to other pipelined processors.","PeriodicalId":184523,"journal":{"name":"Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134061984","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
The impact of out-of-order message delivery on cache coherence protocols 乱序消息传递对缓存一致性协议的影响
Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555) Pub Date : 2001-05-13 DOI: 10.1109/CCECE.2001.933717
M. Toncev, M. Tomasevic, J. Dordevic, M. Aleksic
{"title":"The impact of out-of-order message delivery on cache coherence protocols","authors":"M. Toncev, M. Tomasevic, J. Dordevic, M. Aleksic","doi":"10.1109/CCECE.2001.933717","DOIUrl":"https://doi.org/10.1109/CCECE.2001.933717","url":null,"abstract":"The opimizations of the communication controller improve the overall performance of a distributed shared memory (DSM) system, but also make the out-of-order message delivery possible which can lead to deadlock situations, The goal of the paper is to propose the solution for preventing the deadlock and to evaluate the performance for a real workload. First, the basic cache coherence protocol was adopted and the actions implied by the directory data access model, requirements for a relaxed memory consistency model, and network and controller delays are also defined. After that, the critical situations are clearly identified. Then, a solution for deadlock avoidance, which uses two-bit counters for rejected acknowledgement messages, is proposed. The simulation analysis with the representative SPLASH-2 real benchmark suite was carried out to evaluate the overall performance. Finally, the results of the analysis are presented and discussed for different system parameter values.","PeriodicalId":184523,"journal":{"name":"Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133975374","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
Probabilistic modeling of converters for power evaluation in nonsinusoidal conditions 非正弦条件下变换器功率评估的概率建模
Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555) Pub Date : 2001-05-13 DOI: 10.1109/CCECE.2001.933589
T. Esposito, A. Russo, P. Varilone
{"title":"Probabilistic modeling of converters for power evaluation in nonsinusoidal conditions","authors":"T. Esposito, A. Russo, P. Varilone","doi":"10.1109/CCECE.2001.933589","DOIUrl":"https://doi.org/10.1109/CCECE.2001.933589","url":null,"abstract":"This paper describes a probabilistic modeling of AC/DC static converters aimed to obtain the probability density functions of converter powers (active and reactive powers at fundamental, total active and apparent powers, and so on); the random behavior of displacement power factor and of total power factor is also considered. Both the case of a single converter and of several converters are analyzed. The influence of the main causes of converter power randomness is taken into account (supply voltages at fundamental and at harmonic order, converter firing angle, and so on). Numerical applications are presented and discussed to analyze the characteristics of the converter power probability density functions. The main conclusions of the paper are that the converter powers do not approach normal distributions and that there is a low correlation between active and reactive powers at fundamental and a high correlation between total active and apparent powers; moreover: the beta probability density function can be used to approach the active power at fundamental and the total active and apparent powers of several (up to 10) converters.","PeriodicalId":184523,"journal":{"name":"Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555)","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130827656","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
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