MB45

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Exterior Noise Test

Accelerating from Standstill

Date : 2001-09-11
Personnel : S.C. & B.S.
Temperature (°F) : 70 Humidity (%) : 70
Wind Speed (mph) : 4 Wind Direction : W
Barometric Pressure (in.Hg) : 30.12
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): 45.8

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 73.1 1 72.0
2 72.6 2 71.9
3 72.8 3 72.6
4 73.2 4 72.6
5 73.3 5 72.8
Average of two highest actual noise levels = 73.3 dB(A) Average of two highest actual noise levels = 72.7 dB(A)