Registered Environmental Protection Engineer

Practice session

Two independent industrial noise sources operate simultaneously near a factory boundary. When Source 1 operates alone, the measured sound pressure level at the receiver is L_1 = 85.0 dB(A). When Source 2 operates alone, the measured sound pressure level is L_2 = 82.0 dB(A). What is the total combined sound pressure level (L_total) when both sources operate simultaneously (neglecting background noise)?

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