AS 4241-1994

1-AS 4241-1994 ACOUSTICS - INSTRUMENTS FOR THE MEASUREMENT OF SOUND INTENSITY - MEASUREMENT WITH PAIRS OF PRESSURE SENSING MICR
4-PREFACE
5-CONTENTS
7-INTRODUCTION
9-1 Scope
9-2 Normative references
10-3 Definitions
12-4 Grades of accuracy
13-5 Reference environmental conditions
13-6 Sound intensity processors: requirements
16-7 Sound intensity probes: requirements
20-8 Sound intensity instruments: requirements
20-9 Power supplies: requirements
20-10 Sound intensity probe calibrators: requirements
21-11 Sound intensity processors: performance verification
24-12 Sound intensity probes: performance verification
26-13 Calibrators: performance verification
27-14 Field calibration and checks
28-15 Marking and instruction manuals
30-Annex A - Periodic verification procedures
30-A1. Processors
30-A2. Probes
31-A3. Calibrators
32-Annex B - Sound intensity processors employing autoranging
33-Annex C - Sound intensity processors based on DFT analysers converting narrow bands to octave or one-third octave
36-Annex D - RC networks for generating known phase shifts
37-Annex E - Dynamic capability index