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Examination of bone...
Examination of bone-conducted transmission from sound field excitation measured by thresholds, ear-canal sound pressure, and skull vibrations
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- Reinfeldt, Sabine, 1978 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Stenfelt, Stefan, 1969 (author)
- Linköpings universitet,Teknisk audiologi,Hälsouniversitetet
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- Good, Tobias (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Håkansson, Bo, 1953 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- Acoustical Society of America (ASA), 2007
- 2007
- English.
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In: Journal of the Acoustical Society of America. - : Acoustical Society of America (ASA). - 1520-8524 .- 0001-4966. ; 121:3, s. 1576-1587
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https://doi.org/10.1...
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Abstract
Subject headings
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- Bone conduction (BC) relative to air conduction (AC) sound field sensitivity is here defined as the perceived difference between a sound field transmitted to the ear by BC and by AC. Previous investigations of BC-AC sound field sensitivity have used different estimation methods and report estimates that vary by up to 20 dB at some frequencies. In this study, the BC-AC sound field sensitivity was investigated by hearing threshold shifts, ear canal sound pressure measurements, and skull bone vibrations measured with an accelerometer. The vibration measurement produced valid estimates at 400 Hz and below, the threshold shifts produced valid estimates at 500 Hz and above, while the ear canal sound pressure measurements were found erroneous for estimating the BC-AC sound field sensitivity. The BC-AC sound field sensitivity is proposed, by combining the present result with others, as frequency independent at 50 to 60 dB at frequencies up to 900 Hz. At higher frequencies, it is frequency dependent with minima of 40 to 50 dB; at 2 and 8 kHz, and a maximum of 50 to 60 dB at 4 kHz. The BC-AC sound field sensitivity is the theoretical limit of maximum attenuation achievable with ordinary hearing protection devices. (c) 2007 Acoustical Society of America.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Medicinteknik -- Medicinsk laboratorie- och mätteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Medical Engineering -- Medical Laboratory and Measurements Technologies (hsv//eng)
Keyword
- MICROPHONE
- NOISE
- AIR CONDUCTION
- ATTENUATION
- HEARING PROTECTION
- MEDICINE
Publication and Content Type
- art (subject category)
- ref (subject category)
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