School of Psychological Sciences, University of Manchester, UK.
Int J Audiol. 2010 Oct;49(10):799-801. doi: 10.3109/14992027.2010.497940.
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.
本研究的目的是确定使用 ER-3A 插入式耳机（带有泡沫耳塞和定制硬丙烯酸耳模）获得的纯音和宽带咔嗒声的耳间衰减（IA）值。参与者为 15 名长期单侧失聪的成年人。IA 被定义为好耳和较差耳的未掩蔽气导阈值之间的差异。泡沫耳塞的最小 IA 值分别为纯音和宽带咔嗒声的 50dB 和 55dB。硬丙烯酸耳模的最小 IA 值分别为纯音和宽带咔嗒声的 45dB 和 50dB。
