President/Trolley

Star Trans by Supreme Corp. Pdf Download PDF Report

Exterior Noise Test

Accelerating from Constant Speed

Date : 2010-11-12
Personnel : M.R., T.S., B.L. & E.D.
Temperature (°F) : 60 Humidity (%) : 30
Wind Speed (mph) : Wind Direction :
Barometric Pressure (in.Hg) : 30.14
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): 42.3

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 71.2 1 78.9
2 83.8 2 70.6
3 82.5 3 84.4
4 83.2 4 79.4
5 71.0 5 79.6
Average of two highest actual noise levels = 83.5 dB(A) Average of two highest actual noise levels = 82.0 dB(A)