CENTURION

CHAMPION MOTOR COACH, INC. Pdf Download PDF Report

Exterior Noise Test

Accelerating from Standstill

Date : 1992-07-14
Personnel : D.L., B.L., & R.H.
Temperature (°F) : 67 Humidity (%) : 77
Wind Speed (mph) : 10 Wind Direction : NW
Barometric Pressure (in.Hg) : 27.95
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 B.L.
Initial Sound Level Meter Calibration: true checked by B.L.
Exterior Ambient Noise Level dB(A): 49.0

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 71.5 1 72.5
2 70.3 2 72.3
3 71.2 3 72.4
4 4
5 5
Average of two highest actual noise levels = 71.4 dB(A) Average of two highest actual noise levels = 72.5 dB(A)