Older Listeners' Perception of Speech With Strengthened and Weakened Dynamic Pitch Cues in Background Noise.
Older Listeners' Perception of Speech With Strengthened and Weakened Dynamic Pitch Cues in Background Noise.
复制标题
老年听众对背景噪声中动态音调线索增强和减弱的语音感知。
DOI：
10.1044/2020_jslhr-20-00116
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Shen,Jing
中科院分区：
文献类型：
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作者：
Shen,Jing
动态基音是指基频的变化，是在噪声环境中帮助语音感知的一种声学线索。本研究探讨了加强和削弱动态音高线索对老年人的语音感知噪声的影响，以及这些影响是如何调制的个别因素，包括频谱感知能力。MethodThe实验测量语音接收阈值在噪声中的年轻听众与正常的听力和老年人的听力状态范围从接近正常的听力轻至中度感音神经性听力损失。目标语音的音高轮廓被操纵，以创建四个级别的动态音高强度：减弱，原始，轻度加强和加强。使用频谱涟漪和调频discrimination.ResultsTwo年轻和年长的听众表现较差的频谱感知能力进行了测量与操作的动态音高线索比与原始的动态音高。动态音高对老年人语音识别的影响与他们的年龄有关，但与他们对频谱信息的感知无关。那些年龄较大的听众谁是相对年轻的动态音高manipulations.ConclusionsThe研究结果表明，目前的音高操纵策略是有害的老年听众感知语音噪声，相比，原来的动态音高。虽然年龄对动态音高效应的影响可能是由于与年龄相关的音高感知下降，但本研究中使用的频谱测量并不是动态音高效应的强预测因子。综上所述，这些结果表明，下一步的工作应该集中在如何操纵语音中的声学线索，以提高老年听众在噪声中的语音感知。
PurposeDynamic pitch, which is defined as the variation in fundamental frequency, is an acoustic cue that aids speech perception in noise. This study examined the effects of strengthened and weakened dynamic pitch cues on older listeners' speech perception in noise, as well as how these effects were modulated by individual factors including spectral perception ability.MethodThe experiment measured speech reception thresholds in noise in both younger listeners with normal hearing and older listeners whose hearing status ranged from near-normal hearing to mild-to-moderate sensorineural hearing loss. The pitch contours of the target speech were manipulated to create four levels of dynamic pitch strength: weakened, original, mildly strengthened, and strengthened. Listeners' spectral perception ability was measured using tests of spectral ripple and frequency modulation discrimination.ResultsBoth younger and older listeners performed worse with manipulated dynamic pitch cues than with original dynamic pitch. The effects of dynamic pitch on older listeners' speech recognition were associated with their age but not with their perception of spectral information. Those older listeners who were relatively younger were more negatively affected by dynamic pitch manipulations.ConclusionsThe findings suggest the current pitch manipulation strategy is detrimental for older listeners to perceive speech in noise, as compared to original dynamic pitch. While the influence of age on the effects of dynamic pitch is likely due to age-related declines in pitch perception, the spectral measures used in this study were not strong predictors for dynamic pitch effects. Taken together, these results indicate next steps in this line of work should be focused on how to manipulate acoustic cues in speech in order to improve speech perception in noise for older listeners.