Sentinel

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Exterior Noise Test

Accelerating from Standstill

Date : 1999-06-09
Personnel : B.L., B.C. and M.H.
Temperature (°F) : 84 Humidity (%) : 33
Wind Speed (mph) : 9 Wind Direction : NNE
Barometric Pressure (in.Hg) : 30.08
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 B.L.
Initial Sound Level Meter Calibration: true checked by B.L.
Exterior Ambient Noise Level dB(A): 40.1

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 75.6 1 75.9
2 74.2 2 74.9
3 73.4 3 74.6
4 73.9 4 74.7
5 73.6 5 74.3
Average of two highest actual noise levels = 74.9 dB(A) Average of two highest actual noise levels = 75.4 dB(A)