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随着现代武器的发展,脉冲噪声对听觉器官的致伤危险性也愈益增加。因而制定适当的安全标准以减轻暴露人员的听力损伤是很有必要的。目前国际上较熟悉的是1968年美国CHABA提出的标准。1975年西德的Pfander(本文的作者之一)提出了另一个较为完整的标准。这两个标准有相似之处,它们都以压力峰值、脉宽和发数为基本参量,其目标都是保护95％以上的暴露人员不致产生永久性的听力损伤;但也有一些明显的差异,如二者对脉宽的计算方法不同,判断听力损伤的指标不同,所得安全标准曲线的斜率不同
With the development of modern weapons, the impulsive risk of impulsive noise to auditory organs is also increasing. Therefore, it is necessary to establish appropriate safety standards to reduce the hearing impairment of exposed persons. At present, internationally acclaimed is the standard proposed by the U.S. CHABA in 1968. Pfander (one of the authors of this article) of West Germany in 1975 proposed another more complete standard. The two standards have similarities, all based on peak pressure, pulse width and number of hair, with the goal of protecting more than 95% of exposed individuals from permanent hearing impairment; however, there are some notable differences, If the two methods of calculating the pulse width are different to determine the indicators of hearing loss, the slope of the resulting safety standard curve is different