BE Biomedical Engineering Semester 1 (FE First Year)University of Mumbai
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# A classroom has dimension 10×8×6m3. the reverberation time is 3 sec. calculate the total absorption of surface and average absorption. - BE Biomedical Engineering Semester 1 (FE First Year) - Applied Physics 1

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ConceptReflection of Sound(Reverberation and Echo)

#### Question

A classroom has dimension 10×8×6m3. the reverberation time is 3 sec. calculate the total absorption of surface and average absorption.

#### Solution

Given Data :- V = 10×8×6 = 480m
S = 2[(10×8) + (8×6) + (10×6)] = 376 m3
T = 3 sec.

Formula :- T = 0.161V/A = 0.161 V/(α_(av).S)

Calculations:- A = ( 0.161×V)/T = (0.161×480)/3 = 25.76 " sabine" -m^2
α_(av) = A/S =( 25.76)/(376) = 0.068  sabine.

Answer :- Total absorption , A = 25.76  sabine-m

Average absorption coefficient, αav  = 0.068 sabine

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#### APPEARS IN

Solution A classroom has dimension 10×8×6m3. the reverberation time is 3 sec. calculate the total absorption of surface and average absorption. Concept: Reflection of Sound(Reverberation and Echo).
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