RENAISSANCE

MOTOR COACH INDUSTRIES Pdf Download PDF Report

Exterior Noise Test

Accelerating from Standstill

Date : 2000-04-24
Personnel : S.C. & E.D.
Temperature (°F) : 56 Humidity (%) : 54
Wind Speed (mph) : Calm Wind Direction : Calm
Barometric Pressure (in.Hg) : 29.91
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): 51.6

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 80.6 1 81.5
2 80.6 2 80.9
3 80.6 3 81.6
4 80.0 4 81.5
5 80.4 5 81.4
Average of two highest actual noise levels = 80.6 dB(A) Average of two highest actual noise levels = 81.6 dB(A)