基于峰度调整的职业性非稳态噪声暴露测量方法

Measuring method of occupational non-Gaussian noise exposure based on kurtosis adjustment

现有的噪声暴露测量方法基于等能量假说,适用于稳态噪声,不完全适用于非稳态噪声暴露测量。研究表明,噪声时域结构指标(峰度)联合噪声能量指标,有望有效定量非稳态噪声暴露,目前缺少该联合指标统一的测量方法。本文介绍了基于峰度调整的非稳态噪声暴露测量方法,详细阐述了该方法的测量指标、调整方案、适用对象、仪器要求和测量步骤。通过峰度对累积噪声暴露量(CNE)中暴露周期进行调整,或基于动物或人群数据的调整系数对等效A声级(L_(Aeq))进行调整,能更准确地测量劳动者的非稳态噪声暴露,改善非稳态噪声所导致听力损失被低估的情况。未来需要大量人群研究来验证两种调整方案的有效性。

are applicable to Gaussian noise while not fully applicable to non-Gaussian noise.Studies have shown that temporal structure(kurtosis)combined with noise energy has the potential to quantify non-Gaussian noise exposure effectively.However,there is no unified measuring method adopting this joint metric.In this paper,the measuring method of non-Gaussian noise exposure based on kurtosis adjustment was introduced,detailing measurement indicators,adjustment schemes,applicable objects,instrument requirements,and measurement steps.Adjusting the exposure duration of cumulative noise exposure(CNE)by kurtosis or adjusting the equivalent continuous A-weighted sound pressure level(L_(Aeq))by an adjustment coefficient based on animal or population studies can more accurately quantify workers’exposure to nonGaussian noise and improve the underestimation of hearing loss caused by non-Gaussian noise.A large number of population studies are warranted in the future to verify the effectiveness of these two adjustment schemes.