TCD 9679629-1

MID BUS, INC. Pdf Download PDF Report

Exterior Noise Test

Accelerating from Standstill

Date : 1996-06-11
Personnel : Bob LaMorte, Bud Byers, and Ron Harter
Temperature (°F) : 83 Humidity (%) : 75
Wind Speed (mph) : 5 Wind Direction : nw
Barometric Pressure (in.Hg) : 30.05
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 92.1
Initial Sound Level Meter Calibration: true checked by 92.1
Exterior Ambient Noise Level dB(A): 44.1

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 72.8 1 72.9
2 72.1 2 72.7
3 72.6 3 72.8
4 72.8 4 72.1
5 72.2 5 72.3
Average of two highest actual noise levels = 72.8 dB(A) Average of two highest actual noise levels = 72.9 dB(A)