How It Works - Honeywell Howard Leight VeriPRO Quick Reference Manual

1.1 How It Works

Unlike typical audiometric tests that measure the softest level at
which a listener can hear a tone, VeriPRO utilizes a relative
measurement of hearing level – the loudness of a tone in one ear
is balanced to a tone in the opposite ear at a known level. This
unique "loudness-balance" method allows an accurate hearing
test to be performed with normal background noise levels found
in a typical office or worksite – no special sound booth or
accommodations are needed.
The VeriPRO test procedure
VeriPRO's test method is simple to learn and fast to complete. Users
balance tones using an on-screen slider bar so that the tones are
equally loud in both ears.
1. VeriPRO measures the user's relative hearing level without
earplugs, across a range of frequencies.
2. The user inserts an earplug in the right ear and repeats the
loudness-balance procedure.
3. The user repeats the loudness-balance procedure with earplugs
in both ears.
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