ORION V

BUS INDUSTRIES OF AMERICA, INC. Pdf Download PDF Report

Exterior Noise Test

Accelerating from Constant Speed

Date : 1990-07-09
Personnel : S.M., D.F., & B.J
Temperature (°F) : 82 Humidity (%) : 68
Wind Speed (mph) : 1 Wind Direction : SW
Barometric Pressure (in.Hg) :
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
Initial Sound Level Meter Calibration: false checked by
Exterior Ambient Noise Level dB(A): 48.0

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 76.0 1 74.6
2 75.1 2 77.5
3 74.0 3 76.9
4 75.1 4 75.2
5 74.4 5 77.5
Average of two highest actual noise levels = 75.6 dB(A) Average of two highest actual noise levels = 77.5 dB(A)