CNG 45' Coach

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Exterior Noise Test

Accelerating from Constant Speed

Date : 2012-12-12
Personnel : T.S., M.Z. & S.R.
Temperature (°F) : 36 Humidity (%) : 52
Wind Speed (mph) : 5 Wind Direction : W
Barometric Pressure (in.Hg) : 30.37
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 T.S.
Initial Sound Level Meter Calibration: true checked by T.S.
Exterior Ambient Noise Level dB(A): 34.8

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 66.3 1 67.6
2 67.0 2 67.5
3 68.3 3 68.3
4 67.6 4 67.9
5 66.8 5 68.7
Average of two highest actual noise levels = 67.9 dB(A) Average of two highest actual noise levels = 68.5 dB(A)