Recommended Sound-Pressure Levels for Non-Detectability at 100 Feet in a Jungle Ambient Noise Level
HUMAN ENGINEERING LAB ABERDEEN PROVING GROUND MD
Pagination or Media Count:
It is recommended that the maximum sound-pressure levels as measured 100 feet from the source shall not exceed a the ambient noise levels in a quiet jungle environment without insect or animal noises andor b the listeners threshold of audibility.
- Acoustic Detection and Detectors