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Exterior Noise Test

Accelerating from Standstill

Date : 1991-04-26
Personnel : SM
Temperature (°F) : 68 Humidity (%) : 43
Wind Speed (mph) : 8 Wind Direction : sw
Barometric Pressure (in.Hg) : 30.16
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 SM
Initial Sound Level Meter Calibration: true checked by SM
Exterior Ambient Noise Level dB(A): 42.1

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 79.5 1 80.2
2 80.1 2 79.5
3 81.0 3 79.8
4 4
5 5
Average of two highest actual noise levels = 80.6 dB(A) Average of two highest actual noise levels = 80.0 dB(A)