Environmental Noise Report · MCU13/0064

9 Appendix B – Media Room Amplified Music Testing
An amplified music test was conducted for the Makepeace Island media room. The system includes
internal speakers.

During the testing intrusive noise was measured using ‘track 1’ of an album entitled Cadenza by
Mark Watson. The reference period of a minute was used consistently during the testing. Reference
source testing points at 3 m from installed speakers are presented on Figure B.9.1. The results of the
testing are presented in Table B.9.1. The daytime evening limit was calculated by taking a noise level
goal of 40 dB(A) and applying the difference with the intrusive measurement to the measured sound
pressure levels at 3 m.

                            Table B.9.1: Media Room Amplified Music Testing Summary
                    Hz                         63      125       250   500   1000   2000   dBLin   dB(C)   dB(A)
A        Normalisation Moderator             105       109       100   99     96     95      111     111     102
B    Source L10 (3 m from source) S6           93       94       91    94     93     88      100     100      96
C       (A-B) (Moderator - Source)             12       15        9     5      3      7
     Intrusive levels at worst affected
D                 site L10                     54       43       42    48     34     26
     (C+D) (Normalised intrusive level
E             at affected site)                66       58       51    53     37     33                       52
     Background at worst affected site
F                    L90                       36       35       21    18     17     13
G   (E-F) (Exceedance of Backgrounds)          30       23       30    35     21     20
      Maximum allowable Tolerance
H     above background after 10 pm              8        8        8     8      8      8
I        Exceedance of Tolerance               22       15       22    27     13     12




                                     Figure B.9.1: Media Room Test Configuration



0023-R1-01 KHA Makepeace Island Noise Impact Assessment Report                                                20
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