Riko K, Alberti P W
J Occup Med. 1983 Jul;25(7):523-6.
Hearing protectors are the most widely used means of protecting hearing from the harmful effects of noise. Economic considerations make it unlikely that noise can be reduced at the source to acceptable levels in the immediate future and isolation of workers in sound-attenuating enclosures or reduction of an individual's exposure time is not always practical. Personal hearing protective devices are affordable and readily available. Despite many years of use, a number of theoretical and practical questions remain about their utility.
听力保护器是保护听力免受噪声有害影响应用最为广泛的手段。从经济角度考虑，在不久的将来将噪声源降低到可接受水平不太可能实现，而且将工人隔离在隔音罩内或减少个人暴露时间也并非总是可行的。个人听力保护装置价格实惠且容易获得。尽管已经使用多年，但关于其效用仍存在一些理论和实际问题。
