IFSP_English - RIC | RIC

Apr 23, 2020 · The driver has an average hearing loss (average of test results for 500 hertz (Hz), 1,000 Hz, and 2,000 Hz) in one ear at less than or equal to 40 dBs. The hearing requirement for an audiometric test is based on hearing loss only at the 500 Hz, 1,000 Hz, and 2,000 Hz frequencies that are typical of normal conversation. ................
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