A large machine sitting on the floor in a workshop emits noise with the following power1W/125HZ, 1.5W/250HZ, 2W/500HZ, 2.5W/1000Hz, and 2W/2000Hz. The dimension of theworkshop is 20OmX15m with 6m ceiling. The walls, ceiling and floor have average absorptionof 0.05, 0.6 and 0.02, respectively. If the machine is located at 5m from one end of theworkshop, and an office wall needs to be built at 5m from the other end, calculate: The SWLin each frequency band,a) Room constants R for the workshop and office.b) The sound pressure level in front of the office wall location A in each frequency band,c) The loudness of the noise at location A in each frequency band and the totalloudness,d) If the transmission loss of the office wall is 20DB, what is the maximum loudnessinside the office,e) How many hours can a person stay inside the office without exceeding the dailynoise dose (DND)?25m15m5m5m

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Answered: A large machine sitting on the floor in…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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