ASA S12.12 1992 R2017
$59.58
ANSI/ASA S12.12-1992 (R2017) American National Standard Engineering Method for the Determination of Sound Power Levels of Noise Sources Using Sound Intensity
| Published By | Publication Date | Number of Pages |
| ASA | 1992 | 25 |
None
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 7 | 1 INTRODUCTION ….. ….. ……………………………………………………………………………. ………………………. .. 2 SCOPE ………………………….. …….. ….. .. ………….. ….. …………………………………………………………………… . 2. 1 General 2.2 Field of Application 2.3 Measurement Uncertainty 3 DEFINITIONS |
| 10 | 4 TEST ENVIRONMENT 4.1 General 4.2 Guidelines on the Test Environment 4.2.1 Physical site 4.2.2 Atmospheric conditions 4.2.3 Background noise 5 INSTRUMENTATION 5. 1 General |
| 11 | 5.2 Sound Pressure Microphone and Associated Cables 5.3 Sound Intensity Probe and Associated Cables 5.4 Frequency Response of Instrumentation System 5.5 Frequency Analyzer and Weighting Network |
| 12 | 5.6 Transducer and Instrumentation System Calibration 5.7 Performance Verification 5.8 Field Check 6 INSTALLATION AND OPERATION OF SOURCE 6.1 General |
| 13 | 6.2 Installation of Source 6.3 Auxiliary Equipment 6.4 Operation of Source During Test 7 DETERMINATION OF SOUND INTENSITY AND SOUND PRESSURE LEVELS ON MEASUREMENT SURFACE 7 .1 General 7 .1 .1 Measurement Surface 7 .1 .2 Shape of Measurement Surface |
| 14 | 7 .1.3 Size of Measurement Surface 7. 1 .4 Placement ·and Orientation of Measurement Surface 7 .2 Sampling of Sound on Measurement Surface 7.2.1 Measurement at Fixed Points 7.2.2 Scanning of Surface Segments |
| 15 | 7.2.2.1 General 7.2.2.2 Scanning Procedures 7.3 Reduction of Number of Measurement Locations |
| 16 | V vi CONTENTS 7.4 Conditions of Measurements 7 .4.1 General 7.4.2 Measurements with Exponential Averaging or Time-Period Averaging Systems 8 CALCULATION OF RADIATION QUANTITIES |
| 17 | 8.1 Sound Intensity and Intensity Level Averaged Over Measurement Surface 8.2 Sound Pressure Level Averaged Over Measurement Surface 8.3 Data Quality Indicators 8.4 Sound Power Level 9 INFORMATION TO BE RECORDED 9.1 Sound Source Under Test |
| 18 | 9.2 Test Environment 9.3 Instrumentation 9.4 Measurement Technique 9.5 Acoustical Data 10 INFORMATION TO BE REPORTED |
| 19 | APPENDIX A: COMPUTATIONAL PROCEDURES FOR CALCULATING A-WEIGHTED SOUND POWER LEVEL FROM OCTAVE OR ONE-THIRD OCTAVE BAND SOUND POWER LEVELS APPENDIX B: DATA QUALITY INDICATORS |
| 20 | B.1 Source and Background Level Variability Indicators, 01 B.2 Parasitic Noise Level Indicators, 02 |
| 22 | B.3 Surface Averaging Accuracy Indicators, 03 B.4 Sound Power Accuracy Indicators, 04 B.5 Phase Indicators, 05 |
| 23 | B.6 Averaging Time Sufficiency Indicators, 06 B.7 Measurement Interference Indicators, 07 |
| 24 | BIBLIOGRAPHY |
