Phoneme Based Speaker Verification System Based on Two Stage Self-Organizing Map Design

Speaker verification is one of the pattern recognition task that authenticate a person by his or her voice. This thesis deals with a relatively new technique of classification that is the self-organizing map (SOM). Self-organizing map, as an unsupervised learning artificial neural network, rarely u...

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Main Author:	Ang, Chee Huei
Format:	Thesis
Language:	English English
Published:	2001
Subjects:
Online Access:	http://psasir.upm.edu.my/id/eprint/11160/1/FK_2001_48.pdf
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id	my-upm-ir.11160
record_format	uketd_dc
spelling	my-upm-ir.111602024-05-30T06:43:38Z Phoneme Based Speaker Verification System Based on Two Stage Self-Organizing Map Design 2001-12 Ang, Chee Huei Speaker verification is one of the pattern recognition task that authenticate a person by his or her voice. This thesis deals with a relatively new technique of classification that is the self-organizing map (SOM). Self-organizing map, as an unsupervised learning artificial neural network, rarely used as final classification step in pattern recognition task due to its relatively low accuracy. A two-stage self-organizing map design has been implemented in this thesis and showed improved results over conventional single stage design. For speech features extraction, this thesis does not introduce any new technique. A well study method that is the linear prediction analysis (LP A) has been used. Linear predictive analysis derived coefficients are extracted from segmented raw speech signal to train and test the front stage self-organizing map. Unlike other multistage or hierarchical self-organizing map designs, this thesis utilized residual vectors generated from front stage self-organizing map to train and test the second stage selforganizing map. The results showed that by breaking the classification tasks into two level or more detail resolution, an improvement of more than 5% can be obtained. Moreover, the computation time is also reduced greatly. 2001-12 Thesis http://psasir.upm.edu.my/id/eprint/11160/ http://psasir.upm.edu.my/id/eprint/11160/1/FK_2001_48.pdf text en public masters Universiti Putra Malaysia Faculty of Engineering Ramli, Abdul Rahman English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
advisor	Ramli, Abdul Rahman
topic
spellingShingle	Ang, Chee Huei Phoneme Based Speaker Verification System Based on Two Stage Self-Organizing Map Design
description	Speaker verification is one of the pattern recognition task that authenticate a person by his or her voice. This thesis deals with a relatively new technique of classification that is the self-organizing map (SOM). Self-organizing map, as an unsupervised learning artificial neural network, rarely used as final classification step in pattern recognition task due to its relatively low accuracy. A two-stage self-organizing map design has been implemented in this thesis and showed improved results over conventional single stage design. For speech features extraction, this thesis does not introduce any new technique. A well study method that is the linear prediction analysis (LP A) has been used. Linear predictive analysis derived coefficients are extracted from segmented raw speech signal to train and test the front stage self-organizing map. Unlike other multistage or hierarchical self-organizing map designs, this thesis utilized residual vectors generated from front stage self-organizing map to train and test the second stage selforganizing map. The results showed that by breaking the classification tasks into two level or more detail resolution, an improvement of more than 5% can be obtained. Moreover, the computation time is also reduced greatly.
format	Thesis
qualification_level	Master's degree
author	Ang, Chee Huei
author_facet	Ang, Chee Huei
author_sort	Ang, Chee Huei
title	Phoneme Based Speaker Verification System Based on Two Stage Self-Organizing Map Design
title_short	Phoneme Based Speaker Verification System Based on Two Stage Self-Organizing Map Design
title_full	Phoneme Based Speaker Verification System Based on Two Stage Self-Organizing Map Design
title_fullStr	Phoneme Based Speaker Verification System Based on Two Stage Self-Organizing Map Design
title_full_unstemmed	Phoneme Based Speaker Verification System Based on Two Stage Self-Organizing Map Design
title_sort	phoneme based speaker verification system based on two stage self-organizing map design
granting_institution	Universiti Putra Malaysia
granting_department	Faculty of Engineering
publishDate	2001
url	http://psasir.upm.edu.my/id/eprint/11160/1/FK_2001_48.pdf
_version_	1804888617322020864

Phoneme Based Speaker Verification System Based on Two Stage Self-Organizing Map Design

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