Pub Date : 2010-04-24DOI: 10.1109/CICCAS.1991.184270
Pei Hong-wen, Shen Fengji
The purpose of this paper, which deals with research on the linear predictive speech analysis and synthesis system, is to provide feature analysis for the study on speaker recognition and the development of VCEA (Voice Countermeasures Effectiveness Analysis). The analysis conditions and algorithms are determined, an efficient method for pitch extraction is designed, and the TMS32020 software is developed and debugged with the help of computer simulation. Analysis and synthesis are implemented in real time by TMS32020. A single Texas Instruments TMS32020 microprocessor performs LPC analysis, pitch detection, synthesis, and data I/O.<>
{"title":"Research and implementation of linear predictive speech analysis and synthesis","authors":"Pei Hong-wen, Shen Fengji","doi":"10.1109/CICCAS.1991.184270","DOIUrl":"https://doi.org/10.1109/CICCAS.1991.184270","url":null,"abstract":"The purpose of this paper, which deals with research on the linear predictive speech analysis and synthesis system, is to provide feature analysis for the study on speaker recognition and the development of VCEA (Voice Countermeasures Effectiveness Analysis). The analysis conditions and algorithms are determined, an efficient method for pitch extraction is designed, and the TMS32020 software is developed and debugged with the help of computer simulation. Analysis and synthesis are implemented in real time by TMS32020. A single Texas Instruments TMS32020 microprocessor performs LPC analysis, pitch detection, synthesis, and data I/O.<<ETX>>","PeriodicalId":119051,"journal":{"name":"China., 1991 International Conference on Circuits and Systems","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116699269","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 : 1991-06-16DOI: 10.1109/CICCAS.1991.184372
Geng Hui, K.C. Li, P.C.K. Liu
Two design methods are presented which result in a simple, low-cost and highly stable L-band VCO. One method uses microwave transistors and a high dielectric constant microstrip line which couples with DR. The frequency tuning range of the oscillator is more than 0.5% using this method. The other design method is based on the C-band Self-Oscillation Mixer (SOM) since the L-band DR is too large to use on the one hand. On the other hand, the Q-factor of the DR with the relative dielectric constant of 80 is much lower than that in normal use. The C-band DR is found to be suitable in this case. The L-band VCO consists of two C-band DROs. The L-band output frequency is the frequency difference of the two DROs. This design has the advantages of good frequency stability and relatively large tuning range (2%).<>
{"title":"The design of dielectric resonator VCO","authors":"Geng Hui, K.C. Li, P.C.K. Liu","doi":"10.1109/CICCAS.1991.184372","DOIUrl":"https://doi.org/10.1109/CICCAS.1991.184372","url":null,"abstract":"Two design methods are presented which result in a simple, low-cost and highly stable L-band VCO. One method uses microwave transistors and a high dielectric constant microstrip line which couples with DR. The frequency tuning range of the oscillator is more than 0.5% using this method. The other design method is based on the C-band Self-Oscillation Mixer (SOM) since the L-band DR is too large to use on the one hand. On the other hand, the Q-factor of the DR with the relative dielectric constant of 80 is much lower than that in normal use. The C-band DR is found to be suitable in this case. The L-band VCO consists of two C-band DROs. The L-band output frequency is the frequency difference of the two DROs. This design has the advantages of good frequency stability and relatively large tuning range (2%).<<ETX>>","PeriodicalId":119051,"journal":{"name":"China., 1991 International Conference on Circuits and Systems","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115313746","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 : 1991-06-16DOI: 10.1109/CICCAS.1991.184345
Y.M. Wang, Y.L. Ma
Neural network (NN) method for DOA estimation, recently suggested by Y.L. Ma et al. (1990), is a novel approach. It circumvents problems encountered in DOA estimation efficiently, especially for fully correlated signals. Asymptotically the algorithm has been shown to yield unbiased estimates (the standard deviation of the estimate error approaches the CR bound). This paper gives an analysis of the performance of the NN method, comparing it with eigenstructure algorithm (MUSIC). The article introduces certain measures to characterise its performance. Results of computer simulations are also presented.<>
神经网络(NN)方法是最近由Y.L. Ma et al.(1990)提出的一种新的DOA估计方法。它有效地避免了DOA估计中遇到的问题，特别是对于完全相关的信号。渐近地，该算法已被证明可以产生无偏估计(估计误差的标准差接近CR界)。本文对该方法的性能进行了分析，并与特征结构算法(MUSIC)进行了比较。本文介绍了表征其性能的一些措施。并给出了计算机模拟的结果。
{"title":"The performance of neural network for high resolution direction-of-arrival estimation","authors":"Y.M. Wang, Y.L. Ma","doi":"10.1109/CICCAS.1991.184345","DOIUrl":"https://doi.org/10.1109/CICCAS.1991.184345","url":null,"abstract":"Neural network (NN) method for DOA estimation, recently suggested by Y.L. Ma et al. (1990), is a novel approach. It circumvents problems encountered in DOA estimation efficiently, especially for fully correlated signals. Asymptotically the algorithm has been shown to yield unbiased estimates (the standard deviation of the estimate error approaches the CR bound). This paper gives an analysis of the performance of the NN method, comparing it with eigenstructure algorithm (MUSIC). The article introduces certain measures to characterise its performance. Results of computer simulations are also presented.<<ETX>>","PeriodicalId":119051,"journal":{"name":"China., 1991 International Conference on Circuits and Systems","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115388357","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 : 1991-06-16DOI: 10.1109/CICCAS.1991.184454
H. Zhao
A W-graph is a graph containing wild components and is very useful for layout design of PCB or LSI/VLSI. A wild component is a connected subgraph containing p vertices 3>
{"title":"On planarity of W-graph","authors":"H. Zhao","doi":"10.1109/CICCAS.1991.184454","DOIUrl":"https://doi.org/10.1109/CICCAS.1991.184454","url":null,"abstract":"A W-graph is a graph containing wild components and is very useful for layout design of PCB or LSI/VLSI. A wild component is a connected subgraph containing p vertices 3<or=p< infinity and p-1 edges whose locations are unspecified. This paper gives a definition of a planar W-graph and shows some sufficient conditions for testing whether a W-graph is planar or not. Finally, the difficulty for testing the planarity of a W-graph is discussed.<<ETX>>","PeriodicalId":119051,"journal":{"name":"China., 1991 International Conference on Circuits and Systems","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115504557","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 : 1991-06-16DOI: 10.1109/CICCAS.1991.184535
Xu Jiaquan, Hou Chaohuan
Digital beam forming (DBF) is the main computation in digital signal processors for radar and sonar systems. Conventional DBF is made up of multipliers and adders, but it cannot satisfy the need of real time processing because of its slow speed. In this paper, the authors introduce the distributed arithmetic (DA) algorithm for DBF. They find that the DBF circuit, according to the DA algorithm, is easy to realize in LSI with high speed and effective hardware. DBF chip has been designed using 3 mu m CMOS technology. The chip contains only 1000 gates and its data channels are changeable.<>
数字波束形成(DBF)是雷达和声纳系统中数字信号处理器的主要计算部分。传统DBF由乘法器和加法器组成，但速度慢，不能满足实时处理的需要。本文介绍了DBF的分布式算法(DA)。他们发现，根据数据分析算法，DBF电路易于在大规模集成电路中实现，具有高速和有效的硬件。DBF芯片采用3 μ m CMOS技术设计。该芯片仅包含1000个门，其数据通道是可变的
{"title":"The chip design for digital beam forming","authors":"Xu Jiaquan, Hou Chaohuan","doi":"10.1109/CICCAS.1991.184535","DOIUrl":"https://doi.org/10.1109/CICCAS.1991.184535","url":null,"abstract":"Digital beam forming (DBF) is the main computation in digital signal processors for radar and sonar systems. Conventional DBF is made up of multipliers and adders, but it cannot satisfy the need of real time processing because of its slow speed. In this paper, the authors introduce the distributed arithmetic (DA) algorithm for DBF. They find that the DBF circuit, according to the DA algorithm, is easy to realize in LSI with high speed and effective hardware. DBF chip has been designed using 3 mu m CMOS technology. The chip contains only 1000 gates and its data channels are changeable.<<ETX>>","PeriodicalId":119051,"journal":{"name":"China., 1991 International Conference on Circuits and Systems","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115660645","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 : 1991-06-16DOI: 10.1109/CICCAS.1991.184415
Zheng Yi, Jiang Gangyi, Zhang Lihe
The theory and method of the sound holo-spectrogram are presented. An experimental system is developed, which is based on a multi-dimensional encoding display technique. The principle of the multi-dimensional encoding display is given, and the choice of encoding domain is discussed. The display maintains magnitude-greyness modulation in the conventional sound spectrogram, retains all signal information in the time-frequency domain. The holo-spectrogram is applied to the processing of speech and other acoustic signals. Some experimental results are given. The multi-dimensional encoding display can also be used in the analysis of the two-dimensional spectrum in other transform domains, such as the spatial frequency domain.<>
{"title":"Holo-spectrogram and multi-dimensional encoding display","authors":"Zheng Yi, Jiang Gangyi, Zhang Lihe","doi":"10.1109/CICCAS.1991.184415","DOIUrl":"https://doi.org/10.1109/CICCAS.1991.184415","url":null,"abstract":"The theory and method of the sound holo-spectrogram are presented. An experimental system is developed, which is based on a multi-dimensional encoding display technique. The principle of the multi-dimensional encoding display is given, and the choice of encoding domain is discussed. The display maintains magnitude-greyness modulation in the conventional sound spectrogram, retains all signal information in the time-frequency domain. The holo-spectrogram is applied to the processing of speech and other acoustic signals. Some experimental results are given. The multi-dimensional encoding display can also be used in the analysis of the two-dimensional spectrum in other transform domains, such as the spatial frequency domain.<<ETX>>","PeriodicalId":119051,"journal":{"name":"China., 1991 International Conference on Circuits and Systems","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116930741","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 : 1991-06-16DOI: 10.1109/CICCAS.1991.184369
W. Chan, C. Fan, P. Yip
Load-pull measurements are traditionally performed using stub tuners which can be unreliable and difficult to use. The authors present a method which minimises the use of stub tuners, and by using characterised components reduces the measurement time considerably.<>
{"title":"Load-pull measurements using characterised matching network and variable load (UHF bipolar transistors)","authors":"W. Chan, C. Fan, P. Yip","doi":"10.1109/CICCAS.1991.184369","DOIUrl":"https://doi.org/10.1109/CICCAS.1991.184369","url":null,"abstract":"Load-pull measurements are traditionally performed using stub tuners which can be unreliable and difficult to use. The authors present a method which minimises the use of stub tuners, and by using characterised components reduces the measurement time considerably.<<ETX>>","PeriodicalId":119051,"journal":{"name":"China., 1991 International Conference on Circuits and Systems","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120944584","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 : 1991-06-16DOI: 10.1109/CICCAS.1991.184513
Shiliang Ping, Li Hong-ju, Zhu Min-hui, Shi Yan-yang
The authors present three dimensional superconductor modeling and aided design using an interactive computer graphics technique. They have developed a database, in which is stored the information of structures and properties of superconductor and their related compounds. They also built a fundamental graphics library which contains all the key structural components. The crystal structures and coordination polyhedron structures, which could be stick-ball, polyhedron, spacefilling multicolor etc., are drawn and manipulated on the computer display unit. Meanwhile, these structures can be assembled on the screen as a tool to explore new compounds. The solid modelling consists of half shading or all shading color graphics. With the ray tracing method, high quality images have been generated by simulating the passage of light through an environment.<>
{"title":"Computer graphics used for superconductor modeling and aided design","authors":"Shiliang Ping, Li Hong-ju, Zhu Min-hui, Shi Yan-yang","doi":"10.1109/CICCAS.1991.184513","DOIUrl":"https://doi.org/10.1109/CICCAS.1991.184513","url":null,"abstract":"The authors present three dimensional superconductor modeling and aided design using an interactive computer graphics technique. They have developed a database, in which is stored the information of structures and properties of superconductor and their related compounds. They also built a fundamental graphics library which contains all the key structural components. The crystal structures and coordination polyhedron structures, which could be stick-ball, polyhedron, spacefilling multicolor etc., are drawn and manipulated on the computer display unit. Meanwhile, these structures can be assembled on the screen as a tool to explore new compounds. The solid modelling consists of half shading or all shading color graphics. With the ray tracing method, high quality images have been generated by simulating the passage of light through an environment.<<ETX>>","PeriodicalId":119051,"journal":{"name":"China., 1991 International Conference on Circuits and Systems","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127353289","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 : 1991-06-16DOI: 10.1109/CICCAS.1991.184519
Yongqi Wang, J. Hong, Chengjiang Mao, Yuan Lin
The authors describe a practical minimization procedure for Boolean functions with high minimality, PM1. The procedure is divided into two main modules: the clustering module which classifies the product terms in the primitive Boolean function into several disjoint groups containing fewer variables, and the minimizing module which maximizes the Boolean function corresponding to each of the groups by employing a machine learning algorithm, AE1. PM1 is a descendent version of SWT which has no clustering module. Experiments show that PM1 is more efficient than SWT, and more effective than ENTOTT which is only based on logic laws.<>
{"title":"Fast minimization of Boolean functions with high minimality","authors":"Yongqi Wang, J. Hong, Chengjiang Mao, Yuan Lin","doi":"10.1109/CICCAS.1991.184519","DOIUrl":"https://doi.org/10.1109/CICCAS.1991.184519","url":null,"abstract":"The authors describe a practical minimization procedure for Boolean functions with high minimality, PM1. The procedure is divided into two main modules: the clustering module which classifies the product terms in the primitive Boolean function into several disjoint groups containing fewer variables, and the minimizing module which maximizes the Boolean function corresponding to each of the groups by employing a machine learning algorithm, AE1. PM1 is a descendent version of SWT which has no clustering module. Experiments show that PM1 is more efficient than SWT, and more effective than ENTOTT which is only based on logic laws.<<ETX>>","PeriodicalId":119051,"journal":{"name":"China., 1991 International Conference on Circuits and Systems","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125339381","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 : 1991-06-16DOI: 10.1109/CICCAS.1991.184380
Zesheng Shi, J. Ding
The authors present a new technique which can be used to read electronic circuits automatically. Using two prototype systems, they discuss recognition methods for the electronic element symbols. They have applied the syntactic structural approach to recognize the symbols and English characters. The methods described can also be applied to read other engineering drawings.<>
{"title":"A new input method for CAD-automatic read-in technique of paper drawings","authors":"Zesheng Shi, J. Ding","doi":"10.1109/CICCAS.1991.184380","DOIUrl":"https://doi.org/10.1109/CICCAS.1991.184380","url":null,"abstract":"The authors present a new technique which can be used to read electronic circuits automatically. Using two prototype systems, they discuss recognition methods for the electronic element symbols. They have applied the syntactic structural approach to recognize the symbols and English characters. The methods described can also be applied to read other engineering drawings.<<ETX>>","PeriodicalId":119051,"journal":{"name":"China., 1991 International Conference on Circuits and Systems","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126784473","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}
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