A simple lossy audio coding scheme based on the DWT

Detalhes bibliográficos
Autor(a) principal: Vikas K., Gupta
Data de Publicação: 2007
Outros Autores: Khevariya, Prashant K., Salvado, José
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.11/103
Resumo: This paper proposes a simple scheme for audio coding that does not use perceptual models. The audio coder is based on the discrete wavelet transform to decorrelate signals, computed through the lifting scheme, and followed by Huffman coding. The evaluation of the coding scheme is presented by using some .wav audio test files, coded for different conditions, and also includes subjective evaluation. Experimental results show the compression ratios achieved, the degradation of the signals expressed as values of signal to noise ratio and the changes in spectrum information.
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spelling A simple lossy audio coding scheme based on the DWTAudio codingLossy coding schemesWavelet transformThis paper proposes a simple scheme for audio coding that does not use perceptual models. The audio coder is based on the discrete wavelet transform to decorrelate signals, computed through the lifting scheme, and followed by Huffman coding. The evaluation of the coding scheme is presented by using some .wav audio test files, coded for different conditions, and also includes subjective evaluation. Experimental results show the compression ratios achieved, the degradation of the signals expressed as values of signal to noise ratio and the changes in spectrum information.Universidade da Beira InteriorRepositório Científico do Instituto Politécnico de Castelo BrancoVikas K., GuptaKhevariya, Prashant K.Salvado, José2010-01-12T18:21:55Z20072007-01-01T00:00:00Zconference objectinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10400.11/103engGUPTA,Vikas K; KEVARIYA, Prashant K; SALVADO, José - A simple lossy audio coding scheme based on the DWT In Proceedings Engenharias’2007. Covilhã: UBI, 2007978-989-654-000-5info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-11-16T01:50:38Zoai:repositorio.ipcb.pt:10400.11/103Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-11-16T01:50:38Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv A simple lossy audio coding scheme based on the DWT
title A simple lossy audio coding scheme based on the DWT
spellingShingle A simple lossy audio coding scheme based on the DWT
Vikas K., Gupta
Audio coding
Lossy coding schemes
Wavelet transform
title_short A simple lossy audio coding scheme based on the DWT
title_full A simple lossy audio coding scheme based on the DWT
title_fullStr A simple lossy audio coding scheme based on the DWT
title_full_unstemmed A simple lossy audio coding scheme based on the DWT
title_sort A simple lossy audio coding scheme based on the DWT
author Vikas K., Gupta
author_facet Vikas K., Gupta
Khevariya, Prashant K.
Salvado, José
author_role author
author2 Khevariya, Prashant K.
Salvado, José
author2_role author
author
dc.contributor.none.fl_str_mv Repositório Científico do Instituto Politécnico de Castelo Branco
dc.contributor.author.fl_str_mv Vikas K., Gupta
Khevariya, Prashant K.
Salvado, José
dc.subject.por.fl_str_mv Audio coding
Lossy coding schemes
Wavelet transform
topic Audio coding
Lossy coding schemes
Wavelet transform
description This paper proposes a simple scheme for audio coding that does not use perceptual models. The audio coder is based on the discrete wavelet transform to decorrelate signals, computed through the lifting scheme, and followed by Huffman coding. The evaluation of the coding scheme is presented by using some .wav audio test files, coded for different conditions, and also includes subjective evaluation. Experimental results show the compression ratios achieved, the degradation of the signals expressed as values of signal to noise ratio and the changes in spectrum information.
publishDate 2007
dc.date.none.fl_str_mv 2007
2007-01-01T00:00:00Z
2010-01-12T18:21:55Z
dc.type.driver.fl_str_mv conference object
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.11/103
url http://hdl.handle.net/10400.11/103
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv GUPTA,Vikas K; KEVARIYA, Prashant K; SALVADO, José - A simple lossy audio coding scheme based on the DWT In Proceedings Engenharias’2007. Covilhã: UBI, 2007
978-989-654-000-5
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade da Beira Interior
publisher.none.fl_str_mv Universidade da Beira Interior
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv mluisa.alvim@gmail.com
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