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Speech Compression Using Discrete Wavelet Transform

Speech compression is an area of digital processing that is focusing on reducing bit rate of the speech signal for transmission or storage without significant loss of quality. Wavelet transform has been recently proposed for signal analysis. Speech signal compression using wavelet transform is gi...

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Bibliographic Details
Main Author: M.Ali Najih, Abdulmawla
Format: Thesis
Language:English
English
Published: 2003
Subjects:
Wavelets (Mathematics)
Compression
Online Access:http://psasir.upm.edu.my/id/eprint/12219/1/FK_2003_57_A.pdf
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id oai:psasir.upm.edu.my:12219
record_format eprints
spelling oai:psasir.upm.edu.my:12219 http://psasir.upm.edu.my/id/eprint/12219/ Speech Compression Using Discrete Wavelet Transform M.Ali Najih, Abdulmawla Speech compression is an area of digital processing that is focusing on reducing bit rate of the speech signal for transmission or storage without significant loss of quality. Wavelet transform has been recently proposed for signal analysis. Speech signal compression using wavelet transform is given a considerable attention in this thesis. Speech coding is a lossy scheme and is implemented here to compress onedimensional speech signal. Basically, this scheme consists of four operations which are the transform, threshold techniques (by level and global threshold), quantization, and entropy encoding operations. The reconstruction of the compressed signal as well as the detailed steps needed are discussed.The performance of wavelet compression is compared against linear Productive Coding and Global System for Mobile Communication (GSM) algorithms using SNR, PSNR, NRMSE and compression ratio. Software simulating the lossy compression scheme is developed using Matlab 6. This software provides the basic speech analysis as well as the compression and decompression operations. The results obtained show reasonably high compression ratio and good signal quality. 2003-08 Thesis NonPeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/12219/1/FK_2003_57_A.pdf M.Ali Najih, Abdulmawla (2003) Speech Compression Using Discrete Wavelet Transform. Masters thesis, Universiti Putra Malaysia. Wavelets (Mathematics) Compression English
institution UPM IR
collection UPM IR
language English
English
topic Wavelets (Mathematics)
Compression
spellingShingle Wavelets (Mathematics)
Compression
M.Ali Najih, Abdulmawla
Speech Compression Using Discrete Wavelet Transform
description Speech compression is an area of digital processing that is focusing on reducing bit rate of the speech signal for transmission or storage without significant loss of quality. Wavelet transform has been recently proposed for signal analysis. Speech signal compression using wavelet transform is given a considerable attention in this thesis. Speech coding is a lossy scheme and is implemented here to compress onedimensional speech signal. Basically, this scheme consists of four operations which are the transform, threshold techniques (by level and global threshold), quantization, and entropy encoding operations. The reconstruction of the compressed signal as well as the detailed steps needed are discussed.The performance of wavelet compression is compared against linear Productive Coding and Global System for Mobile Communication (GSM) algorithms using SNR, PSNR, NRMSE and compression ratio. Software simulating the lossy compression scheme is developed using Matlab 6. This software provides the basic speech analysis as well as the compression and decompression operations. The results obtained show reasonably high compression ratio and good signal quality.
format Thesis
author M.Ali Najih, Abdulmawla
author_facet M.Ali Najih, Abdulmawla
author_sort M.Ali Najih, Abdulmawla
title Speech Compression Using Discrete Wavelet Transform
title_short Speech Compression Using Discrete Wavelet Transform
title_full Speech Compression Using Discrete Wavelet Transform
title_fullStr Speech Compression Using Discrete Wavelet Transform
title_full_unstemmed Speech Compression Using Discrete Wavelet Transform
title_sort speech compression using discrete wavelet transform
publishDate 2003
url http://psasir.upm.edu.my/id/eprint/12219/1/FK_2003_57_A.pdf
_version_ 1782718374544932864
score 12.935284

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