G4500

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Exterior Noise Test

Accelerating from Standstill

Date : 2009-08-24
Personnel : B.S., T.S. & S.C.
Temperature (°F) : 71 Humidity (%) : 64
Wind Speed (mph) : 5 Wind Direction : SW
Barometric Pressure (in.Hg) : 30.2
Verify that microphone height is 4 feet, wind speed is less than 12 mpg and ambient temperature is between 30 F and 90 F: true checked by S.C.
Initial Sound Level Meter Calibration: false checked by S.C.
Exterior Ambient Noise Level dB(A): 38.1

Accelerating from Constant Speed
Curb (Right) Side
Accelerating from Constant Speed
Street (Left) Side
Run # Measured Noise Level dB(A) Run # Measured Noise Level dB(A)
1 71.5 1 72.7
2 72.4 2 72.5
3 71.6 3 72.3
4 71.8 4 71.4
5 71.6 5 72.4
Average of two highest actual noise levels = 72.1 dB(A) Average of two highest actual noise levels = 72.6 dB(A)