The room pictured has the following absorption coefficients at 500 Hz: Floor: Carpet, α = 0.14 Ceiling: Acoustic Ceiling Tile, α = 0.70 Walls: Gypsum Wallboard, α = 0.10 Reference image attached below. a. Calculate the total absorption in this room b. Calculate the room constant. c. Calculate the critical distance. Assume Q=4. d. A source generates a sound power level, LW, of 102 dB. The directivity, Q, is 4. What sound pressure level, Lp, would be measured at a distance of 6 m in the room above?
The room pictured has the following absorption coefficients at 500 Hz: Floor: Carpet, α = 0.14 Ceiling: Acoustic Ceiling Tile, α = 0.70 Walls: Gypsum Wallboard, α = 0.10 Reference image attached below. a. Calculate the total absorption in this room b. Calculate the room constant. c. Calculate the critical distance. Assume Q=4. d. A source generates a sound power level, LW, of 102 dB. The directivity, Q, is 4. What sound pressure level, Lp, would be measured at a distance of 6 m in the room above?
Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)
5th Edition
ISBN:9781305084766
Author:Saeed Moaveni
Publisher:Saeed Moaveni
Chapter7: Length And Length-related Variables In Engineering
Section: Chapter Questions
Problem 42P
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The room pictured has the following absorption coefficients at 500 Hz:
Floor: Carpet, α = 0.14
Ceiling: Acoustic Ceiling Tile, α = 0.70
Walls: Gypsum Wallboard, α = 0.10
Reference image attached below.
a. Calculate the total absorption in this room
b. Calculate the room constant.
c. Calculate the critical distance. Assume Q=4.
d. A source generates a sound power level, LW, of 102 dB. The directivity, Q, is 4. What sound pressure level, Lp, would be measured at a distance of 6 m in the room above?
Transcribed Image Text:5 m
7m
1.7
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