Súsonnudóttir Borgný, Kowalewski Borys, Stiefenhofer Georg, Neher Tobias
Department of Clinical Research, University of Southern Denmark, Odense, Denmark.
Technical Audiology Section, Research Unit for ORL - Head & Neck Surgery and Audiology, Odense University Hospital & University of Southern Denmark, Odense, Denmark.
Trends Hear. 2024 Jan-Dec;28:23312165241298613. doi: 10.1177/23312165241298613.
In open-fit digital hearing aids (HAs), the processing delay influences comb-filter effects that arise from the interaction of the processed HA sound with the unprocessed direct sound. The current study investigated potential relations between preferred processing delay, spectral and temporal processing abilities, and self-reported listening habits. Ten listeners with normal hearing and 20 listeners with mild-to-moderate sensorineural hearing impairments participated. Using a HA simulator, delay preference was assessed with a paired-comparison task, three types of stimuli, and five processing delays (0, 0.5, 2, 5, and 10 ms). Spectral processing was assessed with a spectral ripple discrimination (SRD) task. Temporal processing was assessed with a gap detection task. Self-reported listening habits were assessed using a shortened version of the 'sound preference and hearing habits' questionnaire. A linear mixed-effects model showed a strong effect of processing delay on preference scores ( < .001, = 0.30). Post-hoc comparisons revealed no differences between either the two shortest delays or the three longer delays (all > .05) but a clear difference between the two sets of delays ( < .001). A multiple linear regression analysis showed SRD to be a significant predictor of delay preference ( < .01, = 0.29), with good spectral processing abilities being associated with a preference for short processing delay. Overall, these results indicate that assessing spectral processing abilities can guide the prescription of open-fit HAs.
在开放式数字助听器（HA）中，处理延迟会影响由处理后的HA声音与未处理的直达声音相互作用产生的梳状滤波效应。本研究调查了偏好的处理延迟、频谱和时间处理能力以及自我报告的听力习惯之间的潜在关系。十名听力正常的听众和二十名轻度至中度感音神经性听力障碍的听众参与了研究。使用HA模拟器，通过配对比较任务、三种类型的刺激和五种处理延迟（0、0.5、2、5和10毫秒）来评估延迟偏好。通过频谱纹波辨别（SRD）任务评估频谱处理能力。通过间隙检测任务评估时间处理能力。使用“声音偏好和听力习惯”问卷的简化版评估自我报告的听力习惯。线性混合效应模型显示处理延迟对偏好分数有强烈影响（<0.001，R² = 0.30）。事后比较显示，两个最短延迟之间或三个较长延迟之间均无差异（所有p > 0.05），但两组延迟之间存在明显差异（<0.001）。多元线性回归分析显示，SRD是延迟偏好的重要预测指标（<0.01，R² = 0.29），良好的频谱处理能力与对短处理延迟的偏好相关。总体而言，这些结果表明，评估频谱处理能力可以指导开放式HA的处方。
