噪声为三大污染之一害,已日益引起重视。脉冲噪声作为噪声的一种特例,普遍存在于工矿企业和军事武备部门。该噪声虽持续时间短暂,但由于突发性快,声压级高,其影响人的生理状态程度不亚于稳态噪声。根据以往大量的动物试验分析与报道表明,脉冲噪声能在极短时间内,致人中耳破损和内耳不 Noise is one of the three major pollutants and has drawn increasing attention. Impulsive noise as a special case of noise, ubiquitous in industrial and mining enterprises and military armed forces. The short duration of the noise, but because of sudden rapid, high sound pressure level, which affects human physiological state as much as steady-state noise. According to a large number of past animal experiments and reports show that impulse noise in a very short period of time, causing damage to the middle ear and inner ear