Interaural Attenuation of a Click Stimulus Using Deep and Shallow Placement of an Insert Earphone.

Abstract

The effect of deep versus shallow insertion of the ER-3A insert earphone on interaural attenuation (IA) of a click stimulus was examined. IA values for five subjects with profound unilateral hearing loss were obtained. The results (a mean IA difference of 2 dB between the two insertion depths) indicated that IAs for deep insertion were not significantly different from IAs for shallow insertion. Thus deep insertion of insert earphones to achieve larger IA values was not recommended for click stimuli.