지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
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In this paper, an algorithm for suppressing acoustic noises contained in stethoscope sound is proposed and implemented in real-time using an embedded DSP system. Sound collected by stethoscope is down-sampled and band-pass filtered, and later an NLMS adaptive filter is used to cancel the acoustic noise induced from external noise sources. Also, the unpredictable impulsive noises due to fabric friction and instantaneous tapping are detected using the SD-ROM algorithm, and suppressed using an algorithm approximating the morphology filter. The proposed algorithm was tested using signals collected with a digital stethoscope mockup, and implemented on an ARM920T-based DSP system.
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참고문헌 (11)
참고문헌 신청
C-H.H. Chu / 1989 / Impulsive noise suppression and background normalization of electrocardiogram signals using morphological operators / IEEE Transactions on Biomedical Eng
C. Chandra / 1998 / An efficient method for the removal of impulse noise from speech and audio signals / in Proc. IEEE International Symposium on Circuits and System, Monterey, USA
E. Abreu / 1995 / A signal-dependent rank ordered mean (SD-ROM) filter-a new approach for removal of impulses from highly corrupted images / in Proc. IEEE International Conference
F. Zhang / 2009 / QRS Detection based on multi-scale mathematical morphology for wearable ECG devices in body area networks / IEEE Transactions on Biomedical Circuits and Sy
J.C. Chien / 2006 / A study of heart sound and lung sound separation by independent component analysis technique / in Proc. 28th Annual International Conference of the IEEE Enginee
C. Chandra / 1998 / An efficient method for the removal of impulse noise from speech and audio signals / in Proc. IEEE International Symposium on Circuits and System, Monterey, USA
E. Abreu / 1995 / A signal-dependent rank ordered mean (SD-ROM) filter-a new approach for removal of impulses from highly corrupted images / in Proc. IEEE International Conference
F. Zhang / 2009 / QRS Detection based on multi-scale mathematical morphology for wearable ECG devices in body area networks / IEEE Transactions on Biomedical Circuits and Sy
J.C. Chien / 2006 / A study of heart sound and lung sound separation by independent component analysis technique / in Proc. 28th Annual International Conference of the IEEE Enginee
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