TY - GEN
T1 - REDUCTION OF HEART SOUNDS FROM LUNG SOUND RECORDINGS BY AUTOMATED GAIN CONTROL AND ADAPTIVE FILTERING TECHNIQUE
AU - Yip, L.
AU - Zhang, Y. T.
PY - 2001/10
Y1 - 2001/10
N2 - Auscultation is an attractive, simple, and noninvasive method for the diagnosis of cardiovascular and pulmonary disorders. However, heart sounds contaminates severely lung sound recordings. The results of our previous researches indicated that the Laplacian electrocardiographic signal (LECG) could be used as a reference for adaptive filtering to reduce heart sounds. In this paper, an integrated platform including an electronic stethoscope, an automated gain control (AGC), and an adaptive algorithm, has been developed to process the signal in real time. The AGC algorithm allows amplifying the LECG signal in different scales to solve the problem of relative weak LECG signals at right chest. The experimental result shows that the heart-noise reduction at right chest is improved from 43% reported early to 75%. The overall heart sound reduction by our new scheme ranges from 75% to 83% at different chest locations.
AB - Auscultation is an attractive, simple, and noninvasive method for the diagnosis of cardiovascular and pulmonary disorders. However, heart sounds contaminates severely lung sound recordings. The results of our previous researches indicated that the Laplacian electrocardiographic signal (LECG) could be used as a reference for adaptive filtering to reduce heart sounds. In this paper, an integrated platform including an electronic stethoscope, an automated gain control (AGC), and an adaptive algorithm, has been developed to process the signal in real time. The AGC algorithm allows amplifying the LECG signal in different scales to solve the problem of relative weak LECG signals at right chest. The experimental result shows that the heart-noise reduction at right chest is improved from 43% reported early to 75%. The overall heart sound reduction by our new scheme ranges from 75% to 83% at different chest locations.
KW - Adaptive filtering
KW - Auscultation
KW - LECG
KW - Stethoscope
UR - https://www.scopus.com/pages/publications/0035782132
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-0035782132&origin=recordpage
U2 - 10.1109/iembs.2001.1017196
DO - 10.1109/iembs.2001.1017196
M3 - RGC 32 - Refereed conference paper (with host publication)
SN - 0-7803-7211-5
VL - 3
T3 - Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)
SP - 2154
EP - 2156
BT - 2001 Conference Proceedings of the 23rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society
PB - IEEE
T2 - 23rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2001
Y2 - 25 October 2001 through 28 October 2001
ER -