Sound Level: the Sound Level at 1

question 87

Multiple Choice

Sound level: The sound level at 1.0 m from a certain talking person talking is 60 dB. You are surrounded by five such people, all 1.0 m from you and all talking equally loud at the same time. The threshold of hearing is 1.0 × 10^-12 W/m². What sound level are you being exposed to? You can neglect any absorption, reflection, or interference of the sound. The threshold of hearing is 1.0 × 10^-12 W/m².

• A) 300 dB
• B) 60 dB
• C) 74 dB
• D) 67 dB
• E) 81 dB

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