APPENDIX F - Acoustic Report

RENZO TONIN RON RUMBLE                                                                                  1 SEPTEMBER 2017




For daytime and evening activities, the OLGR limit above is more stringent than the EPP (Noise) 2008. In
this instance, the OLGR limit has been adopted in this report.



5                 Patron Noise from Restaurant Deck
As stated in Section 1, the proposed external restaurant deck will accommodate approximately 70 seats.


5.1               Patron Noise Assessment

Noise emissions from crowds consist of two distinct components, the steady hubbub of conversation and
the random peaks of laughter and exclamations. Measurements of crowd noise have been carried out at
a number of alfresco drinking and dining areas around Brisbane6. Empirical equations have been fitted
to the test data, from which it is possible to estimate sound power emissions:


                                            LWA (10)     = 67 + 15log N

Where N = number of patrons


The sound power level estimated from 70 patrons has been calculated using the above equation. The
resulting source level is presented in Table 5. This level has been used to predict patron noise from the
restaurant deck using the CadnaA7 prediction programme.


Table 5: Source noise level (70 patrons)

                                     Predicted Sound
    Description
                                     Power Level (dBA)

    LWA(10)                          95


Screenshots of the 3D model are shown in Figure 2 and Figure 3.




6 Hayne, MJ, Taylor, JC, Rumble, RH & Mee, DJ 2011, “Prediction of Noise from Small to Medium Sized Crowds‟, Proceedings
  of ACOUSTICS 2011, Gold Coast, Australia, Paper Number 133.
7 CadnaA is a noise modeling program used for the calculation, presentation, assessment and prediction of environmental

  noise.


COX ARCHITECTURE                                                      OUTDOOR RESTAURANT DECK (LEVEL 2) - 6 HERON STREET,
QB143-01F02 ACOUSTIC REPORT (2)                                                                           PEREGIAN BEACH
                                                           7                                 PATRON NOISE ASSESSMENT