Effect of Titrated Exposure to Non-Traumatic Noise on Unvoiced Speech Recognition in Human Listeners with Normal Audiological Profiles.
Effect of Titrated Exposure to Non-Traumatic Noise on Unvoiced Speech Recognition in Human Listeners with Normal Audiological Profiles.
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DOI：
10.1177/23312165221117081
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发表时间：
2022-01
影响因子：
2.7
通讯作者：
Brown, Christopher A.
中科院分区：
文献类型：
--
作者：
Zhang, Mengchao;Stern, Richard M.;Moncrieff, Deborah;Palmer, Catherine;Brown, Christopher A.
动物模型显示，非创伤性噪音暴露会影响包络线索的处理。然而，人类研究中的证据一直相互矛盾，可能是因为这些措施没有根据听众的暴露情况进行具体参数化。目前的研究对年轻的牙科学校学生进行了调查，他们在学习过程中接触高频非创伤性牙钻噪音的情况是系统且可精确量化的。招募了二十五名牙科学生和二十七名非牙科参与者。听众被要求识别清音句子，这些句子被处理为仅包含对识别有用的包络线索，并且已被过滤到牙科噪声频谱内部或外部的频率区域。这些句子以安静或噪声掩蔽器之一的形式呈现，包括稳态噪声、16 Hz 或 32 Hz 时间调制噪声或频谱调制噪声。牙科学生在人口统计信息、听力学筛查结果、扩展的高频阈值或安静下的无声语音方面与对照组没有差异，但在调制噪声中的无声语音识别方面始终表现较差。噪声的组间差异取决于过滤条件。仅在高通滤波条件下的时间调制噪声和仅在低通滤波条件下的频谱调制噪声中观察到牙科组性能下降。目前的研究结果提供了迄今为止最直接的证据，证明尽管听力学特征正常，但非创伤性噪声暴露与人类听众的超阈值包络处理问题之间存在联系。
Non-traumatic noise exposure has been shown in animal models to impact the processing of envelope cues. However, evidence in human studies has been conflicting, possibly because the measures have not been specifically parameterized based on listeners’ exposure profiles. The current study examined young dental-school students, whose exposure to high-frequency non-traumatic dental-drill noise during their course of study is systematic and precisely quantifiable. Twenty-five dental students and twenty-seven non-dental participants were recruited. The listeners were asked to recognize unvoiced sentences that were processed to contain only envelope cues useful for recognition and have been filtered to frequency regions inside or outside the dental noise spectrum. The sentences were presented either in quiet or in one of the noise maskers, including a steady-state noise, a 16-Hz or 32-Hz temporally modulated noise, or a spectrally modulated noise. The dental students showed no difference from the control group in demographic information, audiological screening outcomes, extended high-frequency thresholds, or unvoiced speech in quiet, but consistently performed more poorly for unvoiced speech recognition in modulated noise. The group difference in noise depended on the filtering conditions. The dental group's degraded performances were observed in temporally modulated noise for high-pass filtered condition only and in spectrally modulated noise for low-pass filtered condition only. The current findings provide the most direct evidence to date of a link between non-traumatic noise exposure and supra-threshold envelope processing issues in human listeners despite the normal audiological profiles.
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影响因子：
3
作者：
Bharadwaj HM;Verhulst S;Shaheen L;Liberman MC;Shinn-Cunningham BG
通讯作者：
Shinn-Cunningham BG
DOI：
10.1007/978-1-4419-9607-7_1
发表时间：
2012-01-01
期刊：
DIGITAL SIGNAL PROCESSING FOR IN-VEHICLE SYSTEMS AND SAFETY
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通讯作者：
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DOI：
10.1080/19338244.2016.1179169
发表时间：
2017-01-01
影响因子：
1.8
作者：
Ahmed, Hafiz Omer;Ali, Wesal Jasim
通讯作者：
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