{"title":"Classification of Stressed Speech using Gaussian Mixture Model","authors":"H. Patro, G. Raja, S. Dandapat","doi":"10.1109/INDCON.2005.1590186","DOIUrl":"https://doi.org/10.1109/INDCON.2005.1590186","url":null,"abstract":"In this work, different speech features, such as Sinusoidal Frequency Features (SFF), Sinusoidal Amplitude Features (SAF), Cepstral Coefficients (CC) and Mel Frequency Cepstral Coefficients (MFCC) are evaluated to find out their relative effectiveness to represent the stressed speech. Different statistical feature evaluation techniques, such as Probability density characteristics, F-ratio test, Kolmogorv-Smirnov test and Vector Quantization (VQ) classifier are used to assess the performances of the speech features. A novel statistical Feature Discrimination Measure (FDM) is proposed for the same purpose. Gaussian Mixture Model (GMM) classifier is tested for recognition of different stress levels in a speech signal. Speech Under Simulated Emotion (SUSE) database has been used for stress analysis. SAF shows maximum recognition result followed by SFF, MFCC and CC respectively with both GMM and VQ classifier. FDM values and KS test suggest similar performance for the speech features. F-ratio values indicate best performance with SFF followed by SAF, MFCC and CC respectively.","PeriodicalId":158362,"journal":{"name":"2005 Annual IEEE India Conference - Indicon","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125012622","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}
{"title":"Real Time Fault Diagnosis for a Heat Exchanger — A Model Based Approach","authors":"R. Krishnan, N. Pappa","doi":"10.1109/INDCON.2005.1590128","DOIUrl":"https://doi.org/10.1109/INDCON.2005.1590128","url":null,"abstract":"Components, sensors and actuators are often subjected to unexpected and unpermitted deviations, so called faults, from the acceptable or usual conditions. In order to avoid the possible loss of system overall performance, which may lead to unacceptable economic loss, it is necessary to detect and isolate such faults from the process. The model-based method is used for the detection of fault in the heat exchanger process. The faults are identified based on the generation of residuals. Residuals are generated based on the comparison between the plant and estimated model of the process. If the residual has any non-zero value that indicates the presence of fault, otherwise it is fault free condition. In the present work, the faults such as actuator, sensor and process faults are applied to the real time heat exchanger process and the residual is extracted through that the faults are isolated.","PeriodicalId":158362,"journal":{"name":"2005 Annual IEEE India Conference - Indicon","volume":"2 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123809454","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}
S. Subathra, M. Sethuraman, J. V. B. James, Lempel Ziv
{"title":"Performance Analysis of Dictionary based Data Compression Algorithms for High Speed Networks","authors":"S. Subathra, M. Sethuraman, J. V. B. James, Lempel Ziv","doi":"10.1109/INDCON.2005.1590190","DOIUrl":"https://doi.org/10.1109/INDCON.2005.1590190","url":null,"abstract":"Most of the data traversing corporate networks is redundant. The sources for this redundancy are the common language of the organization, business process flows and redundant internal application communications. The performance of the various applications running in a network is frequently constrained due to limited bandwidth, application contention and latency. By reducing the number of bytes that are transmitted across the WAN, data compression can potentially decrease network congestion, increase network effective capacity and communicate significantly larger amounts of data across an existing infrastructure. This paper describes the performance analysis of dictionary based data compression algorithm namely Molecular Sequence Reduction which delivers higher data compression rates, higher speed and scalability than the existing compression algorithms Lempel Ziv 77, Lempel Ziv Prediction.","PeriodicalId":158362,"journal":{"name":"2005 Annual IEEE India Conference - Indicon","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122746359","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}
{"title":"Continuous Localization of Mobile Robots using Systematical Error Correction and a New Computational Algorithm","authors":"J. W. Yeol","doi":"10.1109/INDCON.2005.1590231","DOIUrl":"https://doi.org/10.1109/INDCON.2005.1590231","url":null,"abstract":"This paper presents a modified localization scheme of a mobile robot. When it navigates, the position error of a robot is increased and doesn't go to a goal point where the robot intends to go at the beginning. The objective of localization is to estimate the position of a robot precisely. Many algorithms were developed and still are being researched for localization of a mobile robot at present. Among them, a localization algorithm named continuous localization proposed by Schultz [2] has some merits on real-time navigation and is easy to be implemented compared to other localization schemes. Continuous Localization (CL) is based on map-matching algorithm with global and local maps using only ultrasonic sensors for making grid maps. However, CL has some problems in the process of searching the best-scored-map, when it is applied to a mobile robot. We here propose fast and powerful map-matching algorithm for localization of a mobile robot by experiments.","PeriodicalId":158362,"journal":{"name":"2005 Annual IEEE India Conference - Indicon","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121992404","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}
Chenai Inda, S. Thiruvengadam, A. Karthikeyan, M. Bama, V. Abhaikumar
{"title":"Space Time Adaptive Processing for DS-CDMA UWB Systems","authors":"Chenai Inda, S. Thiruvengadam, A. Karthikeyan, M. Bama, V. Abhaikumar","doi":"10.1109/INDCON.2005.1590150","DOIUrl":"https://doi.org/10.1109/INDCON.2005.1590150","url":null,"abstract":"In this paper, the application of Space Time Adaptive Processing (STAP) to Direct Sequence Code Division Multiple Access (DS-CDMA) Ultra Wideband (UWB) multiuser systems for perfect equalization and Multi Access Interference (MAI) suppression is developed. In a single antenna system, the adaptive Minimum Mean Square Error (MMSE) receivers for DS-CDMA UWB systems are able to gather multipath energy and reject intersymbol interference (ISI) & interchip interference (ICI) to a much greater extent. Multi access interference (MAI) is suppressed to a certain extent using adaptive MMSE receivers. STAP processing has been proven to be an effective method for perfect equalization and interference suppression. The proposed STAP receiver for DS-CDMA UWB system preserves the desired array gain and robust to MAI. Simulation results show that the performance of the UWB STAP receiver is better than the single antenna adaptive MMSE receiver in multiuser and multipath environments.","PeriodicalId":158362,"journal":{"name":"2005 Annual IEEE India Conference - Indicon","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116839388","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}
{"title":"Neural Network Based Control of Reduced Rating DSTATCOM","authors":"B. Singh, J. Solanki, V. Verma","doi":"10.1109/INDCON.2005.1590224","DOIUrl":"https://doi.org/10.1109/INDCON.2005.1590224","url":null,"abstract":"This paper presents a DSTATCOM controlled by a neural network based reference current extractor (NNREC) and rating reduction by use of shunt connected capacitor bank for three-phase three-wire system. The working of DSTATCOM with self supported dc bus is used in two different modes; one is, unity power factor (UPF) mode and second is, zero voltage regulation (ZVR) mode. The heart of the control of DSTATCOM is the derivation of reference currents, which decide the switching of three legs of voltage source inverter (VSI) used in DSTATCOM. The NNRCE is used for control of DSTATCOM, which operates on LMS algorithm. The real positive sequence current component of current is extracted using NNRCE without any phase shift. A PI controller is used to regulate the voltage across the capacitor connected at the dc bus of the VSI. In the ac voltage regulation mode, second PI controller is used to maintain the constant voltage at PCC with variation of load. To reduce the rating of DSTATCOM, an ac capacitor bank of almost half rating of the VAR required is connected at the load end. The simulations are carried out in MATLAB environment for unity power factor operation and ac voltage regulation through leading power factor operation. Simulation results verify the effectiveness of the DSTATCOM system to meet the requirements of distribution system","PeriodicalId":158362,"journal":{"name":"2005 Annual IEEE India Conference - Indicon","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121422752","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}
{"title":"A Reliable Solution(s) for Molecule based Unreliable Memory Devices","authors":"V. Lavanya, A.U. Kumar","doi":"10.1109/INDCON.2005.1590180","DOIUrl":"https://doi.org/10.1109/INDCON.2005.1590180","url":null,"abstract":"In the recent years a lot of research effort is being spent in the areas of nanotechnology, quantum computation, and biologically inspired computing. In this miniaturized computing era, device sizes are in the range of several nanometers and hence amenable to high degree of failures. These computing designs must be evaluated from a circuit and system perspective, in terms of the four key metrics: power, performance, robustness and reliability. However, a matter of concern over here is that the technology of the small will be ridden with random faults and manufacturing defects. Hence, design strategies need to change to take into account of these hypothetical models of failures to build a robust design. The main objective of the paper is to propose two reliable solutions towards the possible faults in Molecule-based memories. One of the solutions encourages using redundant memories to sustain the defects. Another solution introduces the concept of sensing the stored data in the memory. There may be an overhead of redundancy and computation in these solutions. But it will ensure a fault tolerant system. Moreover, in this kind of miniscule technology those overheads can be tolerated and can be compensated from its high performance with low power utilization, reduced size and cost.","PeriodicalId":158362,"journal":{"name":"2005 Annual IEEE India Conference - Indicon","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127631732","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}
{"title":"Web Based Diagnostic Classifier System for Kidney Lesions using Image Texture Parameters","authors":"G. Kulanthaivel, G. Ravindran","doi":"10.1109/INDCON.2005.1590159","DOIUrl":"https://doi.org/10.1109/INDCON.2005.1590159","url":null,"abstract":"Medical Informatics comprises the theoretical and practical aspects of information processing and communication, based on knowledge and experience derived from processes in medicine and health care. Telemedicine can be defined as the use of telecommunications technologies to facilitate healthcare delivery. Ultrasound imaging is a powerful tool for characterizing the state of soft tissues; however, in some cases, where only subtle differences in images are seen as in certain kidney lesions, existing B-scan methods are inadequate. With this idea, an attempt has been made in this paper for in-vivo differentiation of normal and kidney lesions using image texture parameters of ultrasound B-scan image and classification using Web based classifier. A set of 12 Image texture parameters were computed for ultrasonic scanned images of kidney. Artificial Neural Network with an input layer representing the Image texture parameters and an output layer representing the classification results were used. The 12 Image texture parameters were given as inputs to Neural Network and output layer with 3 target values were used. The back propagation algorithm trains a given feed forward multilayer neural network for a given set of input patterns with known classifications. The MATLAB's web server toolbox and Neural Network toolbox were used for analyzing and classification. In the web based medical information system developed, the remote user can submit the ultrasound B-scan image using the Web Browser and the remote user will receive the diagnosis result in the desk using the Internet which is explained in the paper.","PeriodicalId":158362,"journal":{"name":"2005 Annual IEEE India Conference - Indicon","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125456211","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}
{"title":"Optimal Capacitor Allocation in Radial Distribution Systems under APDRP","authors":"Samir Azim, K. Swarup","doi":"10.1109/INDCON.2005.1590245","DOIUrl":"https://doi.org/10.1109/INDCON.2005.1590245","url":null,"abstract":"Optimum location and size of capacitors for a distribution system under APDRP (Accelerated Power Development Programme) is presented. In the present study capacitor sizes are assumed as discrete known variables, which are to be placed on the buses such that it reduces the losses of the distribution system to a minimum. Genetic algorithm is used as an optimization tool, which obtains the optimal values and location of capacitors and minimizes the objective function, which is the power loss in the distribution network under study. A dedicated distribution system load flow is used to calculate power loss and voltage profile of the distribution system. Implementation aspects and important results for a 33 bus, 29 Indian power distribution system and practical 34 bus system have been presented to highlight the working of the algorithm.","PeriodicalId":158362,"journal":{"name":"2005 Annual IEEE India Conference - Indicon","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125840760","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}
{"title":"A New Converter Topology for Switched Reluctance Motor Drive","authors":"R. Jeyabharath, P. Veena, M. Rajaram","doi":"10.1109/INDCON.2005.1590238","DOIUrl":"https://doi.org/10.1109/INDCON.2005.1590238","url":null,"abstract":"Switched reluctance motor, which is robust with high torque ratio and excellent performance, is becoming a competitive replacement for induction motor drives. Tlhe simiplified converter topology with unipolar currents of SRM eliminates the problems of shoot through faults and makes the control circuitry simple. A new converter topology is proposed in this paper. A sensor less circuit with SEPIC working as Power Factor Preregulator (PFP) is used to improve the power factor. The advantage of better current regulation and high power factor with simplified gate circuit is achieved at low cost. The proposed converter is suitable for DC and AC low power and high power applications.","PeriodicalId":158362,"journal":{"name":"2005 Annual IEEE India Conference - Indicon","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132407646","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}