Relation of physical characteristics of foam earplugs to insertion loss

Relation of physical characteristics of foam earplugs to insertion loss

The relation between the physical characteristics of foam earplugs (i.e., weight, length, width, density, expansion pressure, and expansion force) and attenuation in high noise levels (105 dB SPL) was investigated using KEMAR. The results indicated that all commercial polymer foam earplugs have simi...

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Veröffentlicht in:The Journal of the Acoustical Society of America 1981-11, Vol.70 (S1), p.S106-S106
Hauptverfasser: Smith, Curtis R., Broughton, Roy M., Wilmoth, James N., Borton, Thomas E., Mozo, Ben T.
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container_issue S1
container_start_page S106
container_title The Journal of the Acoustical Society of America
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creator Smith, Curtis R.
Broughton, Roy M.
Wilmoth, James N.
Borton, Thomas E.
Mozo, Ben T.
description The relation between the physical characteristics of foam earplugs (i.e., weight, length, width, density, expansion pressure, and expansion force) and attenuation in high noise levels (105 dB SPL) was investigated using KEMAR. The results indicated that all commercial polymer foam earplugs have similar physical properties; frequency (Hz) is the single most important variable in determining attenuation of foam earplugs; and chlorination seems to have a pronounced effect on attenuation. The measured attenuation does not change in a consistent manner with changes in physical properties which may reflect an incomplete understanding of cause-effect relationships between the variables studied.
doi_str_mv 10.1121/1.2018684
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title Relation of physical characteristics of foam earplugs to insertion loss
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