A Localization Method for First and Second Heart Sounds Based on Energy Detection and Interval Regulation

초록

The present study suggests a localization method for the first (S-1) and the second (S-2) feature of heart sounds, based on an algorithm involving frequency filtering, energy detection, and interval regulation. Localization accuracy was evaluated by comparing the algorithm with the traditional Hilbert transform-based localization method. Results show that the sensitivity and the positive predictivity value of proposed method, respectively, were 97.27 % and 99.94 % in S-1 detection and 94.99 % and 100 % in S-2 detection.

키워드