School of Medical Sciences, University of Sydney, Australia.
Int J Audiol. 2010 Oct;49(10):723-32. doi: 10.3109/14992027.2010.484827.
Three-dimensional sound localization of speech in anechoic space was examined for eleven listeners with sensorineural hearing loss. The listeners were fitted bilaterally with CIC and BTE hearing aids having similar bandwidth capabilities. The goal was to determine whether differences in microphone placement for these two styles (CICs at the ear canal entrance; BTEs above the pinna) would influence the availability of pinna-related spectral cues and hence localization performance. While lateral and polar angle localization was unaffected by the hearing aid style, the rate of front-back reversals was lower with CICs. This pattern persisted after listeners accommodated to each set of aids for a six week period, although the overall rate of reversals declined. Performance on all measures in all conditions was considerably poorer than in a control group of listeners with normal hearing.
对 11 名感音神经性听力损失的听众进行了无声空间言语三维定位研究。听众双侧均佩戴 CIC 和 BTE 助听器，这些助听器具有相似的带宽能力。目的是确定这两种样式（CIC 在耳道入口处；BTE 在耳廓上方）的麦克风放置位置差异是否会影响耳廓相关频谱线索的可用性，从而影响定位性能。虽然侧向和极角定位不受助听器样式的影响，但 CIC 的前后反转率较低。这种模式在听众适应每组助听设备六周后仍然存在，尽管整体反转率下降。所有测试条件下的所有测试指标的表现均明显差于听力正常的对照组。
