QBRE CNG

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Exterior Noise Test

Accelerating from Constant Speed

Date : 1996-10-02
Personnel : B.L.,S.C. & R.H.
Temperature (°F) : 52 Humidity (%) : 60
Wind Speed (mph) : 7 Wind Direction : NW
Barometric Pressure (in.Hg) : 30.05
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 R.L.L.
Initial Sound Level Meter Calibration: false checked by RL.L.
Exterior Ambient Noise Level dB(A): 48.9

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 75.5 1 73.6
2 75.2 2 73.6
3 75.3 3 73.9
4 75.4 4 73.9
5 78.0 5 73.7
Average of two highest actual noise levels = 76.8 dB(A) Average of two highest actual noise levels = 73.9 dB(A)