Measurement of breath noise from the surface of human thorax

Author

Vovk, I.V. ; Grinchenko, V.T. ; Oliynik, V.N.

Author_Institution

Inst. of Hydromech., Acad. of Sci., Kiev, Ukraine

Volume

2

fYear

1996

fDate

1996

Firstpage

1330

Abstract

Physical and mathematical models for the human thorax are proposed to estimate the efficiency of breath noise measurements by contact-type pickups. The models considered reflect the general peculiarities of the sound propagation channel from the source to the thorax wall. A mathematical model for the pickup (piezoaccelerometer) is developed that gives an adequate description of its electromechanical properties. An interaction between the pickup and the soft tissue of the thorax wall is investigated. Spatial-time distortions of the detected signal, which arise when the pickup interacts with the thorax wall, are estimated

Keywords

acoustic noise measurement; acoustic signal detection; bioacoustics; biomedical equipment; physiological models; pick-ups; piezoelectric transducers; pneumodynamics; signal detection; Helmholtz equation; auscultation; breath noise measurement; contact-type pickups; human thorax surface; mathematical models; measurement efficiency; multichannel measurements; physical models; piezoaccelerometer; soft tissue-pickup interaction; sound propagation channel; spatial-time distortions; thorax wall tissue; Acoustic distortion; Acoustic noise; Acoustic propagation; Biological tissues; Humans; Instruments; Mathematical model; Noise measurement; Signal detection; Thorax;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 1996. IMTC-96. Conference Proceedings. Quality Measurements: The Indispensable Bridge between Theory and Reality., IEEE

Conference_Location

Brussels

Print_ISBN

0-7803-3312-8

Type

conf

DOI

10.1109/IMTC.1996.507587

Filename

507587