Source Separation of the Second Heart Sound via Alternating Optimization

• Type: Article in International Conference Proceedings Book
• Date: 2021

Authors

Renna, F (Author) FCUP; Plumbley, MD (Author) Other; Coimbra, M (Author) FCUP

Conference proceedings International

Title: 2021 COMPUTING IN CARDIOLOGY (CINC)

Pages: 1-4

Conference on Computing in Cardiology (CinC)

Brno, CZECH REPUBLIC, SEP 12-15, 2021

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 1 Citation

Other information

Authenticus ID: P-00V-ZNP

DOI: 10.22489/cinc.2021.052

Abstract (EN): A novel algorithm to separate S2 heart sounds into their aortic and pulmonary components is proposed. This approach is based on the assumption that, in different heartbeats of a given recording, aortic and pulmonary components maintain the same waveform but with different relative delays, which are induced by the variation of the thoracic pressure at different respiration phases. The proposed algorithm then retrieves the aortic and pulmonary components as the solution of an optimization problem which is approximated via alternating optimization. The proposed approach is shown to provide reconstructions of aortic and pulmonary components with normalized root mean-squared error consistently below 10% in various operational regimes.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4