The acquisition and analysis of heart sound signals based on DSP / 生物医学工程学杂志
Journal of Biomedical Engineering
;
(6): 273-276, 2011.
Artigo
em Chinês
| WPRIM
| ID: wpr-306578
ABSTRACT
Heart sound signals acquisition is the primary basis for achieving non-invasive diagnosis of coronary heart disease. In this paper, a digital signal processor (DSP)-based on miniaturized circuit of heart sound signals acquisition and analysis platform was designed to achieve the functions of filtering, collecting, processing, displaying and the communicating with PC. With the self-developed experimental platform, we collected 228 cases of heart sounds of clinical data, and processed the signals using de-noising method with wavelet transform. These experimental results indicated that the db6 wavelet has the most obvious de-noising effect among the four most commonly used wavelets, i.e., haar, db6, sym8, and coif5. One wavelet at different levels possessed different de-noising effects, with level-5 db6 decomposition obtaining the most desirable result.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Fonocardiografia
/
Auscultação
/
Algoritmos
/
Processamento de Sinais Assistido por Computador
/
Ruídos Cardíacos
/
Análise de Ondaletas
/
Métodos
Limite:
Humanos
Idioma:
Chinês
Revista:
Journal of Biomedical Engineering
Ano de publicação:
2011
Tipo de documento:
Artigo
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