AN 440L

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Exterior Noise Test

Accelerating from Standstill

Date : 1995-01-31
Personnel : B.L., B.R. & R.H.
Temperature (°F) : 37 Humidity (%) : 65
Wind Speed (mph) : 8 Wind Direction : NW
Barometric Pressure (in.Hg) : 29.69
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 R.L.L.
Initial Sound Level Meter Calibration: true checked by R.L.L.
Exterior Ambient Noise Level dB(A): 45.9

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 82.1 1 76.6
2 80.3 2 76.7
3 81.1 3 76.7
4 80.1 4 76.6
5 81.5 5 76.5
Average of two highest actual noise levels = 81.8 dB(A) Average of two highest actual noise levels = 76.7 dB(A)