CHALLENGER

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Exterior Noise Test

Accelerating from Constant Speed

Date : 2004-07-01
Personnel : S.C., R.C., and M.H.
Temperature (°F) : 73 Humidity (%) : 78
Wind Speed (mph) : 3 Wind Direction : ssw
Barometric Pressure (in.Hg) : 30.15
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.C.
Initial Sound Level Meter Calibration: false checked by S.C.
Exterior Ambient Noise Level dB(A): 38.9

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 74.9 1 73.6
2 74.6 2 73.1
3 73.8 3 73.0
4 73.9 4 73.5
5 74.3 5 73.4
Average of two highest actual noise levels = 74.8 dB(A) Average of two highest actual noise levels = 73.6 dB(A)