GROWTH OF TEMPORARY THRESHOLD SHIFT FROM IMPULSE NOISE: A METHODOLOGICAL STUDY.
HUMAN ENGINEERING LABS ABERDEEN PROVING GROUND MD
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An experiment was performed a to validate a procedure for determining the growth rate of temporary threshold shift TTS from impulse-noise exposure and examine the range of TTS growth rates occurring in a sample representative of the Army population and b to see how binaural and monaural impulse-noise exposures differ in their effects on TTS growth rate. Thirty-nine subjects were exposed to 155 dB peak-level gunfire impulses until they demonstrated 15 dB TTS2 at 2, 4, or 6 kHz. The results showed that a fewer impulses should be administered at the beginning of a test session to better estimate the shape of the TTS growth function and b binaural exposure to impulse noise, under the conditions employed in this study, did not result in consistently faster or slower rates of TTS growth than monaural noise exposure. Author
- Anatomy and Physiology
- Human Factors Engineering and Man Machine Systems