CHALLENGER

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Exterior Noise Test

Accelerating from Standstill

Date : 2004-07-01
Personnel : R.C., S.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: true checked by S.C.
Exterior Ambient Noise Level dB(A): 39.5

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 75.4 1 75.5
2 75.6 2 74.6
3 76.3 3 75.2
4 76.2 4 74.3
5 74.4 5 75.2
Average of two highest actual noise levels = 76.3 dB(A) Average of two highest actual noise levels = 75.4 dB(A)