Transmission of complex sound signals in the human respiratory system as a function of sound velocity in the utilized gas mixture

The previously revealed effect of the simultaneous existence of two sound transmission paths in human lungs is confirmed on an expanded sampling of 25 people for three different types of sounding signals during respiration of three gas mixtures. The obtained dependences of sounding signal arrival ti...

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Veröffentlicht in:Acoustical physics 2011-11, Vol.57 (6), p.872-879
Hauptverfasser: Korenbaum, V. I., D’yachenko, A. I., Nuzhdenko, A. V., Lopatkin, N. S., Tagil’tsev, A. A., Kostiv, A. E.
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container_end_page 879
container_issue 6
container_start_page 872
container_title Acoustical physics
container_volume 57
creator Korenbaum, V. I.
D’yachenko, A. I.
Nuzhdenko, A. V.
Lopatkin, N. S.
Tagil’tsev, A. A.
Kostiv, A. E.
description The previously revealed effect of the simultaneous existence of two sound transmission paths in human lungs is confirmed on an expanded sampling of 25 people for three different types of sounding signals during respiration of three gas mixtures. The obtained dependences of sounding signal arrival times above the trachea and the lower right zone of the lungs on sound velocity in the respiratory gas mixture filling human lungs have made it possible to link the first of these paths to partial sound propagation over lumens of respiratory ways (air-structural mechanism), and the second, to sound propagation over lung tissue (structural mechanism). We have evaluated the length of the sound propagation path along the lung parenchyma for the part of the sounding signal transmitted to the lower right zone of the lungs via the air-structural mechanism; this length during respiration is within the limits of 3.6–2.0 cm.
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subjects Acoustics
Acoustics of Living Systems. Biological Acoustics
Physics
Physics and Astronomy
title Transmission of complex sound signals in the human respiratory system as a function of sound velocity in the utilized gas mixture
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