Abstract
Recently, the need for primary health care becomes stronger for general users to perform at home. This study is to develop a multichannel cardiac sounds in-home measuring system for monitoring children's congenital heart diseases (CHD). Children's cardiac auscultation is always influenced by their hyperactivity or breathing loudly, in view of this circumstance, the multichannel measuring system with auscultation clothes and electronic stethoscopes is designed to obtain the multichannel cardiac signals simultaneously. Further, the multichannel signals analysis methods are proposed to extract the diagnosis features, which are heart rates by characteristic moment waveform in time domain, frequency width by AR-PSD in frequency domain and murmur index by WPE from energy analysis. These effective parameters are using for children's parents and doctors to monitor disease state in simple and convenient way. This home health care system is verified to be useful and convenient for not only physicians but also general users.
