RENAISSANCE

MOTOR COACH INDUSTRIES Pdf Download PDF Report

Exterior Noise Test

Accelerating from Constant Speed

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: false checked by B.L.
Exterior Ambient Noise Level dB(A): 50.3

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 78.2 1 79.3
2 77.3 2 79.2
3 77.1 3 79.0
4 77.4 4 78.9
5 78.7 5 78.6
Average of two highest actual noise levels = 78.5 dB(A) Average of two highest actual noise levels = 79.3 dB(A)