A Robust Multichannel Lung Sound Recording Device

Elmar Messner, Martin Hagmüller, Paul Swatek, Franz Pernkopf

Abstract

This paper presents a robust multichannel lung sound recording device (LSRD) for automatic lung sound classification. Compared to common approaches, we improved the usability and the robustness against body sounds and ambient noise. We developed a novel lung sound transducer (LST) and an appropriate attachment method realized as a foam pad. For analogue prefiltering, preamplification, and digitization of the lung sound signal, we use a composition of low-cost standard audio recording equipment. Furthermore, we developed a suitable recording software. In our experiments, we show the robustness of our LSRD against ambient noise, and we demonstrate the achieved signal quality. The LST’s microphone features a signal-to-noise ratio of SNR = 80 dB. Therefore, we obtain a bandwidth of up to a frequency of f ≈ 2500 Hz for vesicular lung sound recordings. Compared to the attachment of the LST with self-adhesive tape, the foam pad achieves an attenuation of ambient noise of up to 50 dB in the relevant frequency range. The result of this work is a multichannel recording device, which enables a fast gathering of valuable lung sounds in noisy clinical environments without impeding the daily routines.

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Paper Citation


in Harvard Style

Messner E., Hagmüller M., Swatek P. and Pernkopf F. (2016). A Robust Multichannel Lung Sound Recording Device . In Proceedings of the 9th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 1: BIODEVICES, (BIOSTEC 2016) ISBN 978-989-758-170-0, pages 34-39. DOI: 10.5220/0005660200340039


in Bibtex Style

@conference{biodevices16,
author={Elmar Messner and Martin Hagmüller and Paul Swatek and Franz Pernkopf},
title={A Robust Multichannel Lung Sound Recording Device},
booktitle={Proceedings of the 9th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 1: BIODEVICES, (BIOSTEC 2016)},
year={2016},
pages={34-39},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0005660200340039},
isbn={978-989-758-170-0},
}


in EndNote Style

TY - CONF
JO - Proceedings of the 9th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 1: BIODEVICES, (BIOSTEC 2016)
TI - A Robust Multichannel Lung Sound Recording Device
SN - 978-989-758-170-0
AU - Messner E.
AU - Hagmüller M.
AU - Swatek P.
AU - Pernkopf F.
PY - 2016
SP - 34
EP - 39
DO - 10.5220/0005660200340039