AN 340

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Exterior Noise Test

Accelerating from Constant Speed

Date : 1993-04-14
Personnel : B.L., S.C., & R.H.
Temperature (°F) : 54 Humidity (%) : 70
Wind Speed (mph) : 4 Wind Direction : SE
Barometric Pressure (in.Hg) : 29.98
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: false checked by B.L.
Exterior Ambient Noise Level dB(A): 43.1

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 75.4
2 76.2 2 75.7
3 75.8 3 75.3
4 75.6 4 75.7
5 75.5 5 75.5
Average of two highest actual noise levels = 76.0 dB(A) Average of two highest actual noise levels = 75.7 dB(A)