Time-frequency and time-scale techniques for the classification of native and bioprosthetic heart valve sounds

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作者：
Nokia R and D, Camberley, GU15 3XD, United Kingdom [1 ]
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来源：
IEEE Trans. Biomed. Eng. | / 1卷 / 125-128期
关键词：
Acoustic signal processing - Acoustic waves - Cardiology - Diagnosis - Fourier transforms - Spectrum analysis - Wavelet transforms;
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摘要：
The determination of diagnostic features in recorded heart sounds was investigated with Carpentier-Edwards (CE) bioprosthetic valves. Morphological features, extracted using the Choi-Williams distribution, achieved between 96 and 61% correct classification. The time-scale wavelet-transform feature set achieved 100% correct classification with native valve populations, and 87% with the CE replacements.
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