Abstract
In this paper three important denoising strategies for phonocardiograms (Savitzky-Golay, wavelet denoising and a bandpass filter) are re-evaluated on the basis of a new procedure. A method is introduced with which the quality of the signal can be measured. The quality before and after the application of the denoising algorithms is measured and compared. The algorithms are judged on the basis of the quality gain. This way no prior knowledge of the noise is required. Whereas S-G has good results in conventional procedures to evaluate algorithms (with artificially added noise), it appears to have negligible effects in reality. Wavelets and the bandpass filter prove to be efficient.
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© 2015 Springer International Publishing Switzerland
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Mes, F., Yang, K., Yang, W., Jiang, H., Wang, Z. (2015). Evaluation of Denoising Algorithms for Phonocardiograms Based on Computerized Quality Assessment. In: Lacković, I., Vasic, D. (eds) 6th European Conference of the International Federation for Medical and Biological Engineering. IFMBE Proceedings, vol 45. Springer, Cham. https://doi.org/10.1007/978-3-319-11128-5_119
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DOI: https://doi.org/10.1007/978-3-319-11128-5_119
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-11127-8
Online ISBN: 978-3-319-11128-5
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