Marrone Nicole, Mason Christine R, Kidd Gerald
Hearing Research Center, Boston University, Boston, MA 02215, USA.
Trends Amplif. 2008 Dec;12(4):300-15. doi: 10.1177/1084713808325880.
The benefit of wearing hearing aids in multitalker, reverberant listening environments was evaluated in a study of speech-on-speech masking with two groups of listeners with hearing loss (younger/older). Listeners selectively attended a known spatial location in two room conditions (low/high reverberation) and identified target speech in the presence of two competing talkers that were either co-located or symmetrically spatially separated from the target. The amount of spatial release from masking (SRM) with bilateral aids was similar to that when listening unaided at or near an equivalent sensation level and was negatively correlated with the amount of hearing loss. When using a single aid, SRM was reduced and was related to the level of the stimulus in the unaided ear. Increased reverberation also reduced SRM in all listening conditions. Results suggest a complex interaction between hearing loss, hearing aid use, reverberation, and performance in auditory selective attention tasks.
在一项针对两组听力损失患者（年轻/年长）的语音对语音掩蔽研究中，评估了在多说话者、有混响的聆听环境中佩戴助听器的益处。聆听者在两种房间条件下（低/高混响）有选择地关注一个已知的空间位置，并在存在两个竞争说话者的情况下识别目标语音，这两个竞争说话者要么与目标位于同一位置，要么与目标在空间上对称分离。使用双侧助听器时的空间掩蔽释放量（SRM）与在等效感觉水平或接近等效感觉水平时 unaided 聆听时相似，并且与听力损失程度呈负相关。使用单耳助听器时，SRM 会降低，并且与 unaided 耳中的刺激水平有关。混响增加也会在所有聆听条件下降低 SRM。结果表明，听力损失、助听器使用、混响和听觉选择性注意任务中的表现之间存在复杂的相互作用。
