F-53

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Exterior Noise Test

Accelerating from Standstill

Date : 1999-04-27
Personnel : B.L. and R.H.
Temperature (°F) : 55 Humidity (%) : 40
Wind Speed (mph) : 5 Wind Direction : E
Barometric Pressure (in.Hg) : 30.04
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.
Initial Sound Level Meter Calibration: true checked by B.L.
Exterior Ambient Noise Level dB(A): 40.4

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 71.9 1 76.4
2 72.2 2 76.4
3 71.7 3 77.4
4 71.5 4 77.7
5 71.2 5 76.8
Average of two highest actual noise levels = 72.1 dB(A) Average of two highest actual noise levels = 77.6 dB(A)