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Determine the combined reverberant sound level and a direct sound level received by a person 5m away from the sound source of an air-condition unit to an enclosed room whose dimensions are: L=4.5 m, H = 3.6m, and W = 3 m. The floor is covered with carpet with an absorption coefficient of 0.14, the wall is made of marble with absorption coefficient of 0.01, and the ceiling is covered with acoustic ceiling board with an absorption coefficient of 0.80. Assume that the directivity factor is equal to 2. SPL=50dB

Determine the combined reverberant sound level and a direct sound level received by a person 5m away from the sound source of an air-condition unit to an enclosed room whose dimensions are: L=4.5 m, H = 3.6m, and W = 3 m. The floor is covered with carpet with an absorption coefficient of 0.14, the wall is made of marble with absorption coefficient of 0.01, and the ceiling is covered with acoustic ceiling board with an absorption coefficient of 0.80. Assume that the directivity factor is equal to 2. SPL=50dB

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Determine the combined reverberant sound level and a direct sound level received by a person 5m away from the sound source of an air-condition unit to an enclosed room whose dimensions are: L=4.5 m, H = 3.6m, and W = 3 m. The floor is covered with carpet with an absorption coefficient of 0.14, the wall is made of marble with absorption coefficient of 0.01, and the ceiling is covered with acoustic ceiling board with an absorption coefficient of 0.80. Assume that the directivity factor is equal to 2. SPL=50dB

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