Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.11/103
Título: A simple lossy audio coding scheme based on the DWT
Autor: Vikas K., Gupta
Khevariya, Prashant K.
Salvado, José
Palavras-chave: Audio coding
Lossy coding schemes
Wavelet transform
Data: Nov-2007
Editora: Universidade da Beira Interior
Citação: 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
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.
URI: http://hdl.handle.net/10400.11/103
ISBN: 978-989-654-000-5
Aparece nas colecções:ESTCB - Comunicações em encontros científicos e técnicos

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