Comparison of earphone and sound field methods for estimating noise attenuation of foam earplugs

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<title>Comparison of earphone and sound field methods for estimating noise attenuation of foam earplugs</title>
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<title>American Industrial Hygiene Association journal</title>
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<namePart>Carter, N.L.</namePart>
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<namePart>Upfold, G.</namePart>
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<abstract displayLabel="Summary">The Real Ear Attenuation at Threshold (REAT) of ear foam earplugs was determined, using three methods of presentation of the test tones during a single fitting of the earplug. The three presentation methods were (a) sound-field listening; (b) TDH49 earphone mounted in the shell of a circumaural earmuff; and (c) TDH49 earphone in a model 51 cushion. Threshold were tested once under each condition</abstract>
<note type="statement of responsibility">N.L. Carter, G. Upfold</note>
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<topic>Contaminantes físicos</topic>
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<topic>Control del ruido</topic>
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<topic>Audiometría</topic>
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<title>American Industrial Hygiene Association journal</title>
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<text>Vol. 54, nº 6, June 1993 ; p. 307-312</text>
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