AMERITRANS

TRANSPORTATION MANUFACTURING CORPORATION (TMC) Pdf Download PDF Report

Exterior Noise Test

Accelerating from Constant Speed

Date : 2006-07-11
Personnel : B.S., T.S. & S.C.
Temperature (°F) : 75 Humidity (%) : 56
Wind Speed (mph) : 5 Wind Direction : SW
Barometric Pressure (in.Hg) : 30.1
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 S.C.
Initial Sound Level Meter Calibration: false checked by S.C.
Exterior Ambient Noise Level dB(A): 46.8

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 72.5 1 74.0
2 73.1 2 73.3
3 72.7 3 73.6
4 72.9 4 73.5
5 72.7 5 73.1
Average of two highest actual noise levels = 73.0 dB(A) Average of two highest actual noise levels = 73.8 dB(A)