D4500

MOTOR COACH INDUSTRIES Pdf Download PDF Report

Interior Noise Test Data Form

Test Condition 1: 80 dB(A) Stationary White Noise

Date 2001-07-30
Personnel S.C., E.D. & T.S.
Temperature (°F) 68
Humidity (%) 78
Wind Direction Calm
Wind Speed (MPH) 0
Barometric Pressure (in.Hg) 30.02
Initial Sound Level Meter Calibration checked by S.C.
Interior Ambient Noise Level dB(A) 34.0
Exterior Ambient Noise Level dB(A) 55.6
Microphone Height During Testing(in) 48
Measurement Location Measured Sound Level dB(A)
Driver's Seat 40.5
Front Passenger Seats 37.7
In Line with Front Speaker 36.6
In Line with Middle Speaker 35.2
In Line with Rear Speaker 35.2
Rear Passenger Seats 34.4
Final Sound Level Meter Calibration checked by S.C.
Comments
All readings taken in the center aisle