Question: a ) A machine shop has two machines, one producing a sound pressure level of 6 0 dB and one producing 5 8 dB .

a) A machine shop has two machines, one producing a sound pressure level of 60 dB and one producing 58 dB. A new machine producing 68 dB is brought into the room. What is the new sound pressure level in the room? (b) A sound source generates 60 dB. What would the SPL be 80 m from the source?

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