CAOHC Hearing Certification Exam Prep Questions Answered Correctly – Expert Verified | Latest Version 2024/2025

_______ weighting is mostly used for measuring impulse sounds like that generated by weapons. - Z _______ weighting is unweighted across the human hearing frequency range of 20-20,000 Hz. - Z ________ measurements are unweighted and therefore referred to as just dB. - Z #Days to notify individual of an STS in writing - 21 days 1000 Hz retest - Done as a validity check on first ear tested; thresholds should be within 5dB or should reinstruct patient and start test over 3 foot rule - Good rule of thumb to recognize hazardous noise exposure levels/situations: the rule is: if you have to shout at arms length (~3ft), in order to be understood over the background noise, then you're likely exposed to hazardous noise levels & should be wearing hearing protection to prevent NIHL A 5dB exchange rate means the exposure time should be ______________ for each 5 dB(A) increase in sound level. - cut in half