3400 Liberty

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Exterior Noise Test

Accelerating from Standstill

Date : 2015-03-13
Personnel : S.R., E.D. & M.H.
Temperature (°F) : 36 Humidity (%) : 40
Wind Speed (mph) : Calm Wind Direction : N-Calm
Barometric Pressure (in.Hg) : 30.5
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 E.D.
Initial Sound Level Meter Calibration: false checked by
Exterior Ambient Noise Level dB(A): 44.6

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 77.4 1 77.8
2 77.8 2 77.4
3 78.1 3 77.6
4 77.9 4 77.2
5 77.6 5 78.1
Average of two highest actual noise levels = 78.0 dB(A) Average of two highest actual noise levels = 77.9 dB(A)