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Abstract
Extensive data indicate that the loss of hearing acuity observed with increasing age may be attributed to presbycusis or to the effects of exposure to noise. The problem of differentiating between these two causes of hearing loss is complicated by the many variables in exposure and susceptibility to noise.
In this discussion, the author reviews methods for measuring noise and detecting susceptibility to noise, the types of acoustic trauma, and criteria for judging noxious noise.
With the establishment of programs for conserving hearing, the relative effects of noise and age on hearing should be better understood.