Abstract
The aim of the present study was to determine inter-aural attenuation (IA) values for pure tones and a broadband click obtained using an ER-3A insert earphone with a foam plug and with a customized hard acrylic earmould. Participants were 15 adults with a longstanding unilateral dead ear. IA was operationally defined as the difference between the good-ear and poorer-ear not-masked air conduction threshold. Minimum IA values for the foam earplug were 50 dB and 55 dB for pure tones and broadband click, respectively. Minimum IA values for the hard acrylic earmould were 45 dB and 50 dB for pure tones and broadband click, respectively.SumarioEl objetivo de este estudio fue determinar los valores de IA para tonos puros y para un clic de banda ancha utilizando los audífonos de inserción ER-3A con oclusión de esponja y con un molde de acrílico duro a la medida. Participaron 15 adultos con un oído muerto unilateral de larga evolución. Desde el punto de vista operacional se definió IA como la diferencia de umbral por conducción aérea sin enmascarar, entre el oído sano y el dañado. Los valores mínimos de IA con el tapón de esponja fue de 50dB y 55dB para los tonos puros y para el clic de banda ancha respectivamente. Los valores IA mínimos con el molde de acrílico duro fueron de 45dB y 50dB para tonos y clic de banda ancha respectivamente.
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