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Exterior Noise Test

Accelerating from Standstill

Date : 1990-12-20
Personnel : S.M. & B.L.
Temperature (°F) : 38 Humidity (%) : 22
Wind Speed (mph) : 4 Wind Direction : SW
Barometric Pressure (in.Hg) : 44.7
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.M.
Initial Sound Level Meter Calibration: true checked by S.M.
Exterior Ambient Noise Level dB(A): 44.7

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 76.1 1 77.4
2 75.9 2 77.4
3 75.9 3 77.7
4 75.4 4 77.8
5 5
Average of two highest actual noise levels = 76.0 dB(A) Average of two highest actual noise levels = 77.8 dB(A)