Proceedings of the KOSOMBE Conference (대한의용생체공학회:학술대회논문집)
- Volume 1997 Issue 11
- /
- Pages.75-78
- /
- 1997
New Sound Spectral Analysis of Prosthetic Heart Valve
인공판막음의 새로운 스펙트럼 분석 연구
- Lee, H.J. (Dept. of Biomedical Eng., Graduate School, Yonsei Univ.) ;
- Kim, S.H. (Cardiovascular Research Institute, Yonsei Univ.) ;
- Chang, B.C. (Dept. of Thorac. & Cardiovas. Surg., Yonsei Univ.) ;
-
Tack, G.
(Dept. of Biomedical Eng., Konkuk Univ.)
;
- Cho, B.K. (Dept. of Thorac. & Cardiovas. Surg., Yonsei Univ.) ;
- Yoo, S.K. (Dept. of Biomedical Eng., Yonsei Univ.)
- 이희종 (연세대 생체공학협동과정) ;
- 김상현 (연세대 심혈관연구소) ;
- 장병철 (연세대 흉부외과) ;
-
탁계래
(건국대 의공학과)
;
- 조범구 (연세대 흉부외과) ;
- 유선국 (연세대 의용공학교실)
- Published : 1997.11.28
Abstract
In this paper we present new sound spectral analysis methods or prosthetic heart valve sounds. Phonocardiograms(PCG) of prosthetic heart valve were analyzed in order to derive frequency domain feature suitable or the classification of the valve state. The fast orthogonal search method and MUSIC (MUltiple SIgnal Classification) method are described or finding the significant frequencies in PCG. The fast orthogonal search method is effective with short data records and cope with noisy, missing and unequally-spaced data. MUSIC method's key to the performance is the division of the information in the autocorrelation matrix or the data matrix into two vector subspaces, one a signal subspace and the other a noise subspace.
Keywords