S1 and S2 Heart Sound Recognition Using Deep Neural Networks. - Tien-En Chen; Shih-I Yang; Li-Ting Ho; Kun-Hsi Tsai; Yu-Hsuan Chen; Yun-Fan Chang; Ying-Hui Lai; Syu-Siang Wang; Yu Tsao 001; Chau-Chung Wu (IEEE Trans. Biomed. Eng., 2017)