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Subjective sound evaluation

The average person sitting in an open office may begin to experience difficulty carrying on a telephone conversation once the loudness of the office reaches:
A. 60 dB
B. 80 dB
C. 100 dB
D. 120 dB
AnswerB. 80 dB is the level of a noisy office or average factory and renders the phone difficult to use.

ARE 4.0 exam prep PPP

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