Country : Australia
Assignment Task

 

Architectural and Audio Acoustics Assignment 2 2021 This assignment contributes to 70% of your mark in DESC9138. It is done by individual work (not groupwork). The assignment is submitted as a PDF document via Canvas

 

Question 1: Airborne sound insulation in an apartment building An airborne sound insulation measurement was made between a shared lobby area and a bedroom in an unfurnished apartment building. The receiving room (bedroom) has a volume of 88 m3 , and the common partition area is 14.2 m2 . Values for sound pressure level in the source and receiving room, and the receiving room’s background noise and reverberation time, are given below.

 

a) Determine the values of R’w, Dw, Dnw and DnTw. Explain what these values mean.

b) Explain the spectrum adaptation terms, C and Ctr, and what their values reveal about the measurement.

c) With reference to the National Construction Code (Building Code of Australia), state whether this partition is satisfactory, and why.

d) How would the addition of furniture affect each of the four single number ratings?

e) Drawing on relevant theory, suggest ways by which the wall’s sound insulation could be improved?

 

 

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  • Uploaded By : William
  • Posted on : May 29th, 2019

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