COL Nancy Vause, USA
Hearing faint warning signals can prevent injury in many work environments. However, maintaining normal hearing is more difficult for soldiers whose acoustic environment is one of extremes. For example, a quiet jungle trail can suddenly erupt with impulse noise exceeding 180 dBP. This paper presents a complete analysis of the specific aspects of a one time exposure (without hearing protection) in regard to type of exposure, spectral waveform, hearing protection and audiometric results.