Accession Number:

AD0734778

Title:

Listening Levels Preferred by Flying Personnel.

Descriptive Note:

Progress rept. Feb-Jul 71,

Corporate Author:

SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TEX

Report Date:

1971-11-01

Pagination or Media Count:

16.0

Abstract:

Speech intensity was adjusted to the preferred listening level by 65 flyers in the presence of 9 aircraft noise conditions and in quiet. The noises represented highest, lowest, and average overall levels at the pilot position in jet, propeller, and rotary-wing type aircraft. Twelve listeners also performed with dry cotton in the ear canals and another 12 with V-51R earplugs in place. Average preferred levels ranged from 79.5 to 95 dB SPL without ear protectors for the 9 noise conditions. Average preferred intensity in the quiet condition was 75.5 dB SPL. Author

Subject Categories:

  • Anatomy and Physiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE