Time-frequency and time-scale techniques for the classification ofnative and bioprosthetic heart valve sounds |
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Authors: | Bentley PM Grant PM McDonnell JTE |
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Affiliation: | Nokia R&D, Camberley; |
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Abstract: | 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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