PHOENIX

COACH & EQUIPMENT

Exterior Noise Test

Accelerating from Standstill

Date : 1994-11-30
Personnel : R.L. & R.H.
Temperature (°F) : 40 Humidity (%) : 60
Wind Speed (mph) : 9 Wind Direction : NW
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 R.L.
Initial Sound Level Meter Calibration: true checked by R.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 74.6 1 73.3
2 74.7 2 73.4
3 74.3 3 73.0
4 75.0 4 73.3
5 74.8 5 73.0
Average of two highest actual noise levels = 74.9 dB(A) Average of two highest actual noise levels = 73.4 dB(A)