MCU17/0005 - IDAS Application - 113 Marara St Cooroy

  3,      NOISE SURVEY             INSTRUMENTATION

  Noise level measurements were made with instrumentation as follows in Table 3.1:

  Table 3.1           Noise Instrumentation


    Description                                               Model No.                           Serial No,

    Modular Precision Sound Analyser                          B&K 2260                            2459227

    Condenser Microphone OS' diameter                         B&K4189                             2458107

    Acoustical Calibrator                                     B&K4231                             267 1553

    Microphone Windscreen                                     Acoustically transparent foom

    Rion Noise Logger                                         NL-22                               01273552

    Condenser Microphone OS' diameter                         UC-52                               117008

    Microphone Windscreen                                     Acoustically transparent foom

  All instrument systems had been laboratory calibrated using instrumentation traccable to Australian National
  Standards and certified within the la,t two years thus conforming to Australian Standards. The measurement
   system was also calibrated prior to and after the noise survey. Calibration drift was found to be less than 0.3
   dB during attended measurements               and less than 0.5 dB during long tenn noise measurements.     No
   adjustments for instrument drift during the mcasurement period were warranted.




@ Alpha Acoustics   Ply Ltd                                                                   I'age 6 of 17
Doc: J 1562 - Noise Assessment - Painlball Field - Cooroy {Rev 2).doc