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Relationship between noise level and exposure
BIII Graphical representation of the CHABA simplified
Other editions - View all
9l dBA A-weighted acceptable exposure Acoustics attenuation average noise level B-IV Bioacoustics British Columbia bruit calibration signal CHABA criteria CHABA h chain saws dBA Figure decibels diesel engine driller drilling dropped below 80 dry-land sort exposure number exposure pattern exposure to noise Forest Management Institute hearing loss hearing-damage risk hours of recording interruptions per day l0 dBA Length of Maximum logging operations loss is acceptable lower mainland Machine Length Maximum Average Nature maximum noise level measurement microphone Nature of Exposure noise exposure noise level experienced noise level reached NOISE OF OPERATORS noise patterns number recording SPL operator's ear OPERATORS OF MECHANICAL OSHA criteria periods of exposure Prince George region recording SPL SPL recording unit Results of analysis risk of hearing runabout six interruptions skidder sound level sound-level meter SPL SPL exposure Table B-I tape transfer function unacceptable University of Windsor Vancouver Island yarder