GROWTH OF TEMPORARY THRESHOLD SHIFT FROM IMPULSE NOISE: A METHODOLOGICAL STUDY.

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Abstract:

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

Author(s):
Hodge, David C. ; Mccommons, R. Bruce
Author Organization(s):
HUMAN ENGINEERING LABS ABERDEEN PROVING GROUND MD
Descriptive Note:
Technical memo.,
Pagination:
0039

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
HEL-TM-10-67
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
(*HEARING, *THRESHOLDS(PHYSIOLOGY)), (*MACHINE GUNS, *EAR PROTECTORS), GUNS, NOISE, SOURCES, EXPOSURE(PHYSIOLOGY), AUDIOMETRY, ARMY PERSONNEL, ACOUSTICS, HUMAN FACTORS ENGINEERING, SOUND, PHYSIOLOGY
Field(s)/Group(s):
Anatomy and Physiology, Acoustics, Human Factors Engineering and Man Machine Systems
Report Date:
1967 May 01