Pub Date : 2003-07-10DOI: 10.1109/SCS.2003.1226976
E. Lupu, Z. Fehér, P. Pop
This work describes study on the speaker verification rate, using the TESPAR (Time Encoding Signal Processing and Recognition) coding method, when the speech signal is sampled at different rates. The effect of filtering on the speech signal was studied, as well. The TESPAR method is a processing and recognition method in the time domain, proposed by R.A. King. The key problem is to define the TESPAR alphabet used for the TESPAR coding process. In this paper is proposed an approach to generate this alphabet using the Kohonen Neural Networks in a vector quantization process. For the recognition process parallel Multi Layer Perceptron (MLP) neural network were used. As inputs for training/test vectors of the MLP-NN, the TESPAR-S matrices were employed.
本文采用TESPAR (Time Encoding Signal Processing and Recognition，时间编码信号处理与识别)编码方法，对语音信号在不同采样率下的说话人验证率进行了研究。研究了滤波对语音信号的影响。TESPAR方法是由R.A. King提出的一种时域处理和识别方法。关键问题是定义用于TESPAR编码过程的TESPAR字母表。本文提出了一种利用Kohonen神经网络在矢量量化过程中生成该字母表的方法。在识别过程中，采用并行多层感知器(MLP)神经网络。采用TESPAR-S矩阵作为MLP-NN的训练/测试向量输入。
{"title":"On the speaker verification using the TESPAR coding method","authors":"E. Lupu, Z. Fehér, P. Pop","doi":"10.1109/SCS.2003.1226976","DOIUrl":"https://doi.org/10.1109/SCS.2003.1226976","url":null,"abstract":"This work describes study on the speaker verification rate, using the TESPAR (Time Encoding Signal Processing and Recognition) coding method, when the speech signal is sampled at different rates. The effect of filtering on the speech signal was studied, as well. The TESPAR method is a processing and recognition method in the time domain, proposed by R.A. King. The key problem is to define the TESPAR alphabet used for the TESPAR coding process. In this paper is proposed an approach to generate this alphabet using the Kohonen Neural Networks in a vector quantization process. For the recognition process parallel Multi Layer Perceptron (MLP) neural network were used. As inputs for training/test vectors of the MLP-NN, the TESPAR-S matrices were employed.","PeriodicalId":375963,"journal":{"name":"Signals, Circuits and Systems, 2003. SCS 2003. International Symposium on","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131154524","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}
Pub Date : 2003-07-10DOI: 10.1109/SCS.2003.1227140
O. Caltun
Frequently the distortions in an inductive circuit are analyzed and characterized by the ration between the amplitude of the superior harmonics of the induced signal and the amplitude of the first harmonic. More often the second and the third harmonics are considered. The paper tries to demonstrate to importance which must be done to the superior harmonic in order to characterize the response and magnetic properties of the soft ferrite core.
{"title":"Fourier transform of signal induced in circuits with soft ferrite cores","authors":"O. Caltun","doi":"10.1109/SCS.2003.1227140","DOIUrl":"https://doi.org/10.1109/SCS.2003.1227140","url":null,"abstract":"Frequently the distortions in an inductive circuit are analyzed and characterized by the ration between the amplitude of the superior harmonics of the induced signal and the amplitude of the first harmonic. More often the second and the third harmonics are considered. The paper tries to demonstrate to importance which must be done to the superior harmonic in order to characterize the response and magnetic properties of the soft ferrite core.","PeriodicalId":375963,"journal":{"name":"Signals, Circuits and Systems, 2003. SCS 2003. International Symposium on","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133085773","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}
Pub Date : 2003-07-10DOI: 10.1109/SCS.2003.1226953
L. Nedelea, M. Topa, M. Neag
The paper presents the steps in computer-aided design of analog low and high-pass filters. The design starts with a classical filter, and then is multicriteria optimized to meet the behavioral and implementation requirements. The computer-aided tool uses Mathematica for symbolic computation of the objective function and its gradient, MATLAB for the optimization process.
{"title":"Computer-aided network function approximation for multicriteria filter design","authors":"L. Nedelea, M. Topa, M. Neag","doi":"10.1109/SCS.2003.1226953","DOIUrl":"https://doi.org/10.1109/SCS.2003.1226953","url":null,"abstract":"The paper presents the steps in computer-aided design of analog low and high-pass filters. The design starts with a classical filter, and then is multicriteria optimized to meet the behavioral and implementation requirements. The computer-aided tool uses Mathematica for symbolic computation of the objective function and its gradient, MATLAB for the optimization process.","PeriodicalId":375963,"journal":{"name":"Signals, Circuits and Systems, 2003. SCS 2003. International Symposium on","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133415388","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}
Pub Date : 2003-07-10DOI: 10.1109/SCS.2003.1227076
Nan Jiang Nan Jiang, J. Pisharath, A. Choudhary
Communication systems with multiple computing resources are gaining popularity. These devices consume a considerable amount of energy, and require that the system resources be fully utilized at all times. In this paper, we aim to reduce the energy consumption and also improve the system utilization by incorporating performance-enhancement and power-optimization techniques into a multi-resource heterogeneous communication system. We study the performance and energy improvements contributed by our techniques, using a traditional evaluation framework. However, this framework fails to clearly model the performance-energy tradeoffs in the system. Hence, we propose a more relevant framework with a new metric named Energy-resource efficiency (ERE) to study these systems. ERE defines a link between the performance and energy variations in a system to clearly highlight the various performance-energy tradeoffs. Our experimental results shown that, when ERE is used to calibrate the performance-energy tradeoffs, one can achieve up to 80% performance and energy gains in a power-aware heterogeneous communication system.
{"title":"Characterizing and improving energy-delay tradeoffs in heterogeneous communication systems","authors":"Nan Jiang Nan Jiang, J. Pisharath, A. Choudhary","doi":"10.1109/SCS.2003.1227076","DOIUrl":"https://doi.org/10.1109/SCS.2003.1227076","url":null,"abstract":"Communication systems with multiple computing resources are gaining popularity. These devices consume a considerable amount of energy, and require that the system resources be fully utilized at all times. In this paper, we aim to reduce the energy consumption and also improve the system utilization by incorporating performance-enhancement and power-optimization techniques into a multi-resource heterogeneous communication system. We study the performance and energy improvements contributed by our techniques, using a traditional evaluation framework. However, this framework fails to clearly model the performance-energy tradeoffs in the system. Hence, we propose a more relevant framework with a new metric named Energy-resource efficiency (ERE) to study these systems. ERE defines a link between the performance and energy variations in a system to clearly highlight the various performance-energy tradeoffs. Our experimental results shown that, when ERE is used to calibrate the performance-energy tradeoffs, one can achieve up to 80% performance and energy gains in a power-aware heterogeneous communication system.","PeriodicalId":375963,"journal":{"name":"Signals, Circuits and Systems, 2003. SCS 2003. International Symposium on","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124535389","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}
Pub Date : 2003-07-10DOI: 10.1109/SCS.2003.1227112
M. Hnatiuc, G. Lamarque
The purpose of this work is to stimulate a neural network with non-linear activation functions. The non-linear functions are simulated in Microsoft Visual Studio C++ 6.0 to observe the precision and to implement on the programmable logic devices. This network is realized to accept very small input values. The multiplication between input values and weight values is realized with the add-logarithm and exponential functions. One approximates all the non-linear functions with linear functions using shift-add blocks.
这项工作的目的是用非线性激活函数来刺激神经网络。在Microsoft Visual Studio c++ 6.0中对非线性函数进行仿真，观察其精度并在可编程逻辑器件上实现。该网络可以接受非常小的输入值。输入值与权值之间的乘法是通过加对数和指数函数实现的。一个近似所有的非线性函数与线性函数使用移位加块。
{"title":"Implementation of neural network with approximations functions","authors":"M. Hnatiuc, G. Lamarque","doi":"10.1109/SCS.2003.1227112","DOIUrl":"https://doi.org/10.1109/SCS.2003.1227112","url":null,"abstract":"The purpose of this work is to stimulate a neural network with non-linear activation functions. The non-linear functions are simulated in Microsoft Visual Studio C++ 6.0 to observe the precision and to implement on the programmable logic devices. This network is realized to accept very small input values. The multiplication between input values and weight values is realized with the add-logarithm and exponential functions. One approximates all the non-linear functions with linear functions using shift-add blocks.","PeriodicalId":375963,"journal":{"name":"Signals, Circuits and Systems, 2003. SCS 2003. International Symposium on","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131864110","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}
Pub Date : 2003-07-10DOI: 10.1109/SCS.2003.1226946
S. Ciochină, C. Anghel, A. Enescu
Transmit diversity is a very attractive solution for efficient communications through fading wireless channels. The paper presents some aspects concerning the synthesis of the coding matrix in a multiantenna configuration. Because no optimal (maximum coding advantage, maximum transmission rate, minimum delay) codes can be found for systems with more than two antennas, some sub-optimal solutions are analyzed.
{"title":"Sub-optimal solutions to code synthesis for space-time diversity","authors":"S. Ciochină, C. Anghel, A. Enescu","doi":"10.1109/SCS.2003.1226946","DOIUrl":"https://doi.org/10.1109/SCS.2003.1226946","url":null,"abstract":"Transmit diversity is a very attractive solution for efficient communications through fading wireless channels. The paper presents some aspects concerning the synthesis of the coding matrix in a multiantenna configuration. Because no optimal (maximum coding advantage, maximum transmission rate, minimum delay) codes can be found for systems with more than two antennas, some sub-optimal solutions are analyzed.","PeriodicalId":375963,"journal":{"name":"Signals, Circuits and Systems, 2003. SCS 2003. International Symposium on","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132566440","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}
Pub Date : 2003-07-10DOI: 10.1109/SCS.2003.1227111
A. Trandabăț, M. Pîslaru, R. Ciobanu
This work tries to be an answer to the problem of the ice formations on the road and over the taking of landing ways surfaces. As we all know, the unpredicted apparition of the ice over the roads and in the airports is the main cause of the majority human and material looses in those two places. The neuronal prediction system wants to be an alternative to the existent forecasting systems. This system will combine the last moment technique like the networks, the software (Labview, Matlab) and the most modern programming approach: neuronal networks, neuro-fuzzy systems, statistical signal processing, and the result wants to be a prediction system for the ice formation which is very precise and less expensive than the existent systems.
{"title":"Neuronal prediction system of meteorological parameters for quality assurance of the traffic","authors":"A. Trandabăț, M. Pîslaru, R. Ciobanu","doi":"10.1109/SCS.2003.1227111","DOIUrl":"https://doi.org/10.1109/SCS.2003.1227111","url":null,"abstract":"This work tries to be an answer to the problem of the ice formations on the road and over the taking of landing ways surfaces. As we all know, the unpredicted apparition of the ice over the roads and in the airports is the main cause of the majority human and material looses in those two places. The neuronal prediction system wants to be an alternative to the existent forecasting systems. This system will combine the last moment technique like the networks, the software (Labview, Matlab) and the most modern programming approach: neuronal networks, neuro-fuzzy systems, statistical signal processing, and the result wants to be a prediction system for the ice formation which is very precise and less expensive than the existent systems.","PeriodicalId":375963,"journal":{"name":"Signals, Circuits and Systems, 2003. SCS 2003. International Symposium on","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116227717","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}
Pub Date : 2003-07-10DOI: 10.1109/SCS.2003.1227089
Mirela Bianu, A. Isar
There are few techniques for the reduction of interference terms. The most important between them is the reallocation technique. Other methods are based on the decomposition in frames of the signals to be processed. These frames represent discrete variants of some corresponding linear time-frequency representations. The aim of this paper is to propose a new method for the Wigner-Ville time-frequency representation's interference term reduction. This method is based on the conjoint use of the Gabor and Wigner-Ville time-frequency representations of the same signal. Simulations prove the performances of the new method.
{"title":"The reduction of interference terms in the time-frequency plane","authors":"Mirela Bianu, A. Isar","doi":"10.1109/SCS.2003.1227089","DOIUrl":"https://doi.org/10.1109/SCS.2003.1227089","url":null,"abstract":"There are few techniques for the reduction of interference terms. The most important between them is the reallocation technique. Other methods are based on the decomposition in frames of the signals to be processed. These frames represent discrete variants of some corresponding linear time-frequency representations. The aim of this paper is to propose a new method for the Wigner-Ville time-frequency representation's interference term reduction. This method is based on the conjoint use of the Gabor and Wigner-Ville time-frequency representations of the same signal. Simulations prove the performances of the new method.","PeriodicalId":375963,"journal":{"name":"Signals, Circuits and Systems, 2003. SCS 2003. International Symposium on","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116054046","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}
Pub Date : 2003-07-10DOI: 10.1109/SCS.2003.1227067
H. Ahmadi, O. Shoaei, M. Azizi
An 8-bit, 150 MS/s folding interpolating ADC in a digital CMOS technology is described. The developed converter uses resistor interpolation method along with the fully-differential, continuous-time, and open-loop circuitry in order to achieve a high speed operation with low area and power consumption. Also the number of latches in the digital encoder block is reduced using previously described analog encoding. The simulation results of the converter in 0.25 μm CMOS are presented. The ADC power dissipation from a 3V power supply is 310 mW at 150 MHz sampling rate.
{"title":"An 8-bit, 150 MS/s folding and interpolating ADC in 0.25 μm CMOS with resistive averaging","authors":"H. Ahmadi, O. Shoaei, M. Azizi","doi":"10.1109/SCS.2003.1227067","DOIUrl":"https://doi.org/10.1109/SCS.2003.1227067","url":null,"abstract":"An 8-bit, 150 MS/s folding interpolating ADC in a digital CMOS technology is described. The developed converter uses resistor interpolation method along with the fully-differential, continuous-time, and open-loop circuitry in order to achieve a high speed operation with low area and power consumption. Also the number of latches in the digital encoder block is reduced using previously described analog encoding. The simulation results of the converter in 0.25 μm CMOS are presented. The ADC power dissipation from a 3V power supply is 310 mW at 150 MHz sampling rate.","PeriodicalId":375963,"journal":{"name":"Signals, Circuits and Systems, 2003. SCS 2003. International Symposium on","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116176355","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}
Pub Date : 2003-07-10DOI: 10.1109/SCS.2003.1227088
F. Constantinescu, C. V. Marin, M. Nitescu, D. Marin
A new approach to parameter identification for linear circuits is presented. Approximate symbolic pole/zero expressions are equated to numerical values of poles and zeros extracted from gain vs. frequency characteristics. For illustration, parameters of an equivalent circuit of a separation transformer are identified.
{"title":"A new approach to parameter identification of linear circuits","authors":"F. Constantinescu, C. V. Marin, M. Nitescu, D. Marin","doi":"10.1109/SCS.2003.1227088","DOIUrl":"https://doi.org/10.1109/SCS.2003.1227088","url":null,"abstract":"A new approach to parameter identification for linear circuits is presented. Approximate symbolic pole/zero expressions are equated to numerical values of poles and zeros extracted from gain vs. frequency characteristics. For illustration, parameters of an equivalent circuit of a separation transformer are identified.","PeriodicalId":375963,"journal":{"name":"Signals, Circuits and Systems, 2003. SCS 2003. International Symposium on","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115682998","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：