Tuning forks with a frequency of 500 to 1000 Hz are most commonly used to measure:
a. buzzing or tingling sensations.
b. buzzing from bone conduction.
c. hearing range of normal speech.
d. noise above the threshold level.
C
Normal speech has a range of 300 to 3000 Hz; therefore the 500- to 1000-Hz fork is used most often because it can estimate hearing loss in the range of normal speech.
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