Single-Channel Adaptive Noise Canceller for Heart Sound Enhancement during Auscultation

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概要

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• In this paper, a single-channel adaptive noise canceller (SCANC) is proposed to enhance heart sounds during auscultation. Heart sounds provide important information about the condition of the heart, but other sounds interfere with heart sounds during auscultation. The adaptive noise canceller (ANC) is widely used to reduce noises from biomedical signals, but it is not suitable for enhancing auscultatory sounds acquired by a stethoscope. While the ANC needs two inputs, a stethoscope provides only one input. Other approaches, such as ECG gating and wavelet de-noising, are rather complex and difficult to implement as real-time systems. The proposed SCANC uses a single-channel input based on Heart Sound Inherency Indicator and reference generator. The architecture is simple, so it can be easily implemented in real-time systems. It was experimentally confirmed that the proposed SCANC is efficient for heart sound enhancement and is robust against the heart rate variations.

著者

• Kim Myoung

  Dept. Of Biomedical Eng. School Of Medicine Kyungpook National Univ.

• LEE Yunjung

  dept. of medical & biological eng., graduate school, Kyungpook national univ.

• Cho Jin

  School Of Electrical Eng. And Computer Science Kyungpook National Univ.

• KIM Myoung

  Dept. of Biomedical Eng., School of Medicine, Kyungpook National University

• LEE Yunjung

  Dept. of Medical & Biological Eng., Graduate School, Kyungpook National University

• KIM Pil

  EQMed, Business Incubation Center, Kyungpook National University

• CHANG Yongmin

  Dept. of Molecular Medicine, School of Medicine, Kyungpook National University

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• Single-Channel Adaptive Noise Canceller for Heart Sound Enhancement during Auscultation

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