{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T13:23:01Z","timestamp":1791292981522,"version":"4.1.0"},"reference-count":21,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2013,2,18]],"date-time":"2013-02-18T00:00:00Z","timestamp":1361145600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>This work presents a heart sound biometric system based on marginal spectrum analysis, which is a new feature extraction technique for identification purposes. This heart sound identification system is comprised of signal acquisition, pre-processing, feature extraction, training, and identification. Experiments on the selection of the optimal values for the system parameters are conducted. The results indicate that the new spectrum coefficients result in a significant increase in the recognition rate of 94.40% compared with that of the traditional Fourier spectrum (84.32%) based on a database of 280 heart sounds from 40 participants.<\/jats:p>","DOI":"10.3390\/s130202530","type":"journal-article","created":{"date-parts":[[2013,2,19]],"date-time":"2013-02-19T11:11:16Z","timestamp":1361272276000},"page":"2530-2551","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":30,"title":["Heart Sound Biometric System Based on Marginal Spectrum Analysis"],"prefix":"10.3390","volume":"13","author":[{"given":"Zhidong","family":"Zhao","sequence":"first","affiliation":[{"name":"College of Electronics and Information, HangZhou DianZi University, Hangzhou 310018, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qinqin","family":"Shen","sequence":"additional","affiliation":[{"name":"College of Communication Engineering, HangZhou DianZi University, Hangzhou 310018, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fangqin","family":"Ren","sequence":"additional","affiliation":[{"name":"College of Communication Engineering, HangZhou DianZi University, Hangzhou 310018, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2013,2,18]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"4","DOI":"10.1109\/TCSVT.2003.818349","article-title":"An introduction to biometric recognition","volume":"14","author":"Jain","year":"2004","journal-title":"IEEE Trans. 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