Fourier-lapped multilayer perceptron method for speech quality assessment

Autor(es)

Barbedo‚ J.G.A. ; Lopes‚ A. ; others

• Tipo de documento: Artigo Científico
• Fonte: EURASIP Journal on Advances in Signal Processing; v. 2005, n. 9, p. 1425-1434, 2005.
• Assunto(s): Psicoacústica

Resumo

The paper introduces a new objective method for speech quality assessment called Fourier-lapped multilayer perceptron (FLMLP). This method uses an overcomplete transform based on the discrete Fourier transform (DFT) and modulated lapped transform (MLT). This transform generates the DFT and the MLT speech spectral domains from which several relevant perceptual parameters are extracted. The proposed method also employs a multilayer perceptron neural network trained by a modified version of the scaled conjugated gradient method. This neural network maps the perceptual parameters into a subjective score. The numerical results show that FLMLP is an effective alternative to previous methods. As a result, it is worth stating that the techniques here described may be potentially useful to other researches facing the same kind of problem. (AU)

• Processo FAPESP: 01/04144-0 - Medida objetiva de avaliação da qualidade de codecs de áudio
• Beneficiário: Jayme Garcia Arnal Barbedo
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 02/12216-3 - Técnicas avançadas de processamento de sinais em telecomunicações: desconvolução e identificação
• Beneficiário: João Marcos Travassos Romano
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• Processo FAPESP: 01/08513-0 - Transmissao e equalizacao por sub-bandas e concelamento de ruidos impulsivos para uso eficiente dos canais plc (powerline communication).
• Beneficiário: Moises Vidal Ribeiro
• Modalidade de apoio: Bolsas no Brasil - Doutorado