X3-45 Commuter

Prevost, a division of Volvo Group Canada Inc. Pdf Download PDF Report

Exterior Noise Test

Accelerating from Standstill

Date : 2012-08-24
Personnel : T.S., S.R. & T.M.
Temperature (°F) : 79 Humidity (%) : 54
Wind Speed (mph) : 0 Wind Direction : Calm
Barometric Pressure (in.Hg) : 30.2
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): 42.2

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 76.9 1 77.1
2 77.2 2 78.0
3 77.7 3 77.6
4 77.4 4 77.3
5 77.0 5 77.5
Average of two highest actual noise levels = 77.6 dB(A) Average of two highest actual noise levels = 77.8 dB(A)