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Compiled by Ar. MCPSoriano

for AR418B from

Architectural Acoustics,

by David M. Egan

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Ray Diagram Graphics

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Reverberation TimeA classroom 60-ft long by 35-ft wide by 15-ft high

has sound absorption coefficients s of 0.30 forwalls, 0.04 for ceiling, and 0.10 for floor. All s are at

500 Hz.

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Room Noise Reduction

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Transmission Loss

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Composite TL

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Noise Reduction

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Composite TL

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Noise Reduction Between Rooms

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