Investigating age, hearing loss, and background noise effects on speaker-targeted head and eye movements in three-way conversations
Investigating age, hearing loss, and background noise effects on speaker-targeted head and eye movements in three-way conversations
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DOI：
10.1121/10.0003707
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发表时间：
2021-03-01
影响因子：
2.4
通讯作者：
Oxenham, Andrew J.
中科院分区：
文献类型：
--
作者：
Lu, Hao;McKinney, Martin F.;Oxenham, Andrew J.
虽然用于助听器的波束成形算法可以提高性能，但佩戴者的头部可能并不总是面对目标说话者，这可能限制了现实世界的益处。本研究旨在确定眼动跟踪在多大程度上提高了定位当前说话者在三方对话中的准确性，并检验眼动随着背景噪声水平的增加而更有可能跟踪目标说话者的假设，特别是在老年人和/或听力受损的听众中。一个参与者和两个同伙之间的对话是在安静的小桌子周围进行的，背景噪音水平为50、60和70 dB声压级，同时记录参与者的眼睛和头部运动。10名年轻的听力正常的听众接受了测试，沿着还有10名年长的听力正常的听众和8名听力受损的听众。头部的运动通常比说话者的位置低10度-15度，但是头部和眼睛的运动一起很好地预测了说话者的位置。与我们最初的假设相反，在不同的组之间或不同的噪音水平之间，没有观察到听力行为的重大差异，尽管听力受损的听众往往比其他组花更少的时间看当前的谈话者，特别是在最高的噪音水平。
Although beamforming algorithms for hearing aids can enhance performance, the wearer's head may not always face the target talker, potentially limiting real-world benefits. This study aimed to determine the extent to which eye tracking improves the accuracy of locating the current talker in three-way conversations and to test the hypothesis that eye movements become more likely to track the target talker with increasing background noise levels, particularly in older and/or hearing-impaired listeners. Conversations between a participant and two confederates were held around a small table in quiet and with background noise levels of 50, 60, and 70 dB sound pressure level, while the participant's eye and head movements were recorded. Ten young normal-hearing listeners were tested, along with ten older normal-hearing listeners and eight hearing-impaired listeners. Head movements generally undershot the talker's position by 10 degrees-15 degrees, but head and eye movements together predicted the talker's position well. Contrary to our original hypothesis, no major differences in listening behavior were observed between the groups or between noise levels, although the hearing-impaired listeners tended to spend less time looking at the current talker than the other groups, especially at the highest noise level.