Evaluation of an earphone-support device for measuring earplug attenuation

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      <subfield code="a">Evaluation of an earphone-support device for measuring earplug attenuation</subfield>
      <subfield code="c">Thomas G. Dolan, James F. Maurer and Lois G. Dickinson</subfield>
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      <subfield code="a">A new procedure for determining the attenuation of earplugs with a standard audiometric headset was evaluated. The procedure utilized a device that supports a conventional supraural earphone cushion (MX-41/AR) such that it does not contact the pinna or the earplug during threshold measurement. the attenuation provided by a foam earplug was estimated on a group of normal-hearing subjects using this method</subfield>
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      <subfield code="g">Vol. 54, nº 2, February 1993 ; p. 45-50</subfield>
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