CHALLENGER

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Exterior Noise Test

Accelerating from Constant Speed

Date : 2007-03-12
Personnel : B.S., T.S. & S.C.
Temperature (°F) : 46 Humidity (%) : 42
Wind Speed (mph) : 7 Wind Direction : S
Barometric Pressure (in.Hg) : 30.27
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): 38.1

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 71.2 1 72.6
2 71.3 2 72.4
3 70.9 3 72.6
4 71.3 4 72.4
5 71.1 5 72.9
Average of two highest actual noise levels = 71.3 dB(A) Average of two highest actual noise levels = 72.8 dB(A)