基于听觉过滤器的激励模式在噪声性听力损失评估中的研究

W. Al-Dayyeni, Pengfei Sun, Jun Qin
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引用次数: 3

摘要

噪声性听力损失作为一种主要的可避免的职业健康问题,已经被研究了几十年。为了评估NIHL,兴奋模式(EP)被认为是估计耳蜗基底膜(BM)运动的机制之一。本研究采用双共振非线性(DRNL)滤波器和圆指数(ROEX)滤波器两种听觉滤波器分别产生速度EP和响度EP。在此基础上,提出了两种噪声危害指标,用于评价不同类型噪声的危害程度。此外,还模拟了高斯噪声和纯音噪声,以评估所开发的EPs和噪声指标的性能。结果表明,两种发育的EPs都能反映BM对不同类型噪声的响应。对于高斯噪声,在速度EP和响度EP之间存在频移。对于纯音噪声,两种EPs都能准确反映输入噪声的频率。结果表明,两种EPs均可用于NIHL的评估。
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Investigations of Auditory Filters Based Excitation Patterns for Assessment of Noise Induced Hearing Loss
Noise induced hearing loss (NIHL) as one of major avoidable occupational related health issues has been studied for decades. To assess NIHL, the excitation pattern (EP) has been considered as one of mechanisms to estimate movements of basilar membrane (BM) in cochlea. In this study, two auditory filters, dual resonance nonlinear (DRNL) filter and rounded-exponential (ROEX) filter, have been applied to create two EPs, referring as the velocity EP and the loudness EP, respectively. Two noise hazard metrics are also proposed based on the developed EPs to evaluate hazardous levels caused by different types of noise. Moreover, Gaussian noise and pure-tone noise have been simulated to evaluate performances of the developed EPs and noise metrics. The results show that both developed EPs can reflect the responses of BM to different types of noise. For Gaussian noise, there is a frequency shift between the velocity EP and the loudness EP. For pure-tone noise, both EPs can reflect the frequencies of input noise accurately. The results suggest that both EPs can be potentially used for assessment of NIHL.
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