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CAOHC Exam Study guide Questions with Answers 2026/2027
Unit of measurement for frequency (pitch) - answersHertz (Hz)
Unit of measurement for intensity (loudness) -
answers-Decibel (dB)
Risk of damage from noise - answers-How loud
(intensity) and how long (duration)
Steady-state or continuous noise, e.g. generator -
answers-Lasts 1 second or longer
Impulse or Impact noise, e.g. gunfire or nail gun -
answers-Lasts less than one second
Parts of the outer ear - answers-Pinna and external
auditory canal
CAOHC Exam Study guide Questions with 2026/2027
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