AS 1469-1983

1 - AS 1469-1983 ACOUSTICS - METHODS FOR THE DETERMINATION OF NOISE RATING NUMBERS
3 - PREFACE
3 - CONTENTS
4 - 1 SCOPE.
4 - 2 APPLICATION.
4 - 3 REFERENCED DOCUMENTS.
4 - 4 DEFINITIONS.
4 - 4.1 Noise rating (NR) number of the sound
4 - 4.2 Octave band noise rating number (NRf) of the sound
4 - 4.3 Noise rating (NR) curves
4 - 5 DETERMINATION OF NOISE RATING.
4 - 5.1 Numerical Method.
4 - 5.2 Graphical Method.
7 - APPENDIX A - EXAMPLES OF THE USE OF NUMERICAL AND GRAPHICAL METHODS OF DETERMINATION OF NOISE RATING
7 - A1 SCOPE.
7 - A2 DATA.
7 - A3 USE OF THE NUMERICAL METHOD
7 - A4 GRAPHICAL METHOD.
9 - APPENDIX B - OCTAVE BAND SOUND PRESSURE LEVELS CORRESPONDING TO NOISE RATING

Describes a numerical and graphical method for determining the noise rating (NR) number from the measured set of nine octave band sound pressure levels pertaining to the noise in a given environment.

This standard sets out two methods for determining a unique number called the noise rating (NR) number from the measured set of nine octave band sound pressure levels (31.5 Hz to 8 kHz centre frequencies in accordance with AS Z41) pertaining to the noise in a given environment. A numerical method and a graphical method for determining the NR number are described.