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Exterior Noise Test

Accelerating from Constant Speed

Date : 1990-12-20
Personnel : S.M. & B.L.
Temperature (°F) : 38 Humidity (%) : 22
Wind Speed (mph) : 6 Wind Direction : SW
Barometric Pressure (in.Hg) : 28.48
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: false 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 74.6 1 77.5
2 75.2 2 77.8
3 75.3 3 77.3
4 76.0 4 77.5
5 5
Average of two highest actual noise levels = 75.7 dB(A) Average of two highest actual noise levels = 77.7 dB(A)