X3-45 Commuter

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Exterior Noise Test

Accelerating from Constant Speed

Date : 2012-08-24
Personnel : T.S., S.R. & T.M.
Temperature (°F) : 79 Humidity (%) : 54
Wind Speed (mph) : 0 Wind Direction : Calm
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 T.S.
Initial Sound Level Meter Calibration: true checked by T.S.
Exterior Ambient Noise Level dB(A): 42.2

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 72.7 1 73.6
2 73.6 2 74.2
3 74.8 3 74.6
4 73.9 4 74.7
5 73.7 5 74.3
Average of two highest actual noise levels = 74.4 dB(A) Average of two highest actual noise levels = 74.7 dB(A)