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open access

Vol 7, No 1 (2008)
Original articles
Published online: 2008-02-25
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An evaluation of cough-generated sound and body surface vibration by the MEPIM Vibroacoustic System of Cough Registration (MEPIM VSCR)

Małgorzata Krajnik, Iwona Damps-Konstańska, Mieczysław Grabowski, Przemysław Pozański, Ewa Jassem
Advances in Palliative Medicine 2008;7(1):3-8.

open access

Vol 7, No 1 (2008)
Original articles
Published online: 2008-02-25

Abstract

Background. Cough is one of the most common symptoms in chronic pulmonary disease and cancer but we are still lacking a practical and accurate method for its objective evaluation. The aim of our experiment was to determine a new method of objective cough measurement using the time domain and a spectral analysis of body surface vibration and cough-generated sound.
Methods and Results. Our MEPIM Vibroacoustic System of Cough Registration is based on the simultaneous measuring of body surface vibration and generated sound. An acceleration sensor is fixed to the chest wall of the patient, while a microphone is positioned at a distance of 1 m. The analysis of sound and body surface vibration is carried out by a multianalyzer B&K Pulse. We introduced the FFT analysis of the frequency content of both signals and the measurement of the cross-correlation of sound and vibration signals.
Conclusions. The implementation of spectral analysis techniques may improve our abilities to define cough. Further clinical study should be conducted to answer the question of whether analysis of the frequency band might be useful for defining cough among other events.

Abstract

Background. Cough is one of the most common symptoms in chronic pulmonary disease and cancer but we are still lacking a practical and accurate method for its objective evaluation. The aim of our experiment was to determine a new method of objective cough measurement using the time domain and a spectral analysis of body surface vibration and cough-generated sound.
Methods and Results. Our MEPIM Vibroacoustic System of Cough Registration is based on the simultaneous measuring of body surface vibration and generated sound. An acceleration sensor is fixed to the chest wall of the patient, while a microphone is positioned at a distance of 1 m. The analysis of sound and body surface vibration is carried out by a multianalyzer B&K Pulse. We introduced the FFT analysis of the frequency content of both signals and the measurement of the cross-correlation of sound and vibration signals.
Conclusions. The implementation of spectral analysis techniques may improve our abilities to define cough. Further clinical study should be conducted to answer the question of whether analysis of the frequency band might be useful for defining cough among other events.
Get Citation

Keywords

cough; MEPIM Vibroacoustic System of Cough Registration; Fast Fourier Transform; accelerometer spectral analy

About this article
Title

An evaluation of cough-generated sound and body surface vibration by the MEPIM Vibroacoustic System of Cough Registration (MEPIM VSCR)

Journal

Advances in Palliative Medicine

Issue

Vol 7, No 1 (2008)

Pages

3-8

Published online

2008-02-25

Bibliographic record

Advances in Palliative Medicine 2008;7(1):3-8.

Keywords

cough
MEPIM Vibroacoustic System of Cough Registration
Fast Fourier Transform
accelerometer spectral analy

Authors

Małgorzata Krajnik
Iwona Damps-Konstańska
Mieczysław Grabowski
Przemysław Pozański
Ewa Jassem

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