ASA S3.71 2019
$91.54
ANSI/ASA S3.71-2019 American National Standard Methods for Measuring the Effect of Head-worn Devices on Directional Sound Localization in the Horizontal Plane
| Published By | Publication Date | Number of Pages |
| ASA | 2019 | 54 |
None
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 13 | 1 Scope 2 Normative references |
| 14 | 3 Terms and definitions |
| 15 | 4 Subject qualifications 4.1 Test subjects |
| 17 | 5 Test devices 5.1 Required number of head-worn device samples 5.2 Ambient listening gain setting 6 Sound field requirements 6.1 Defined head cylinder sound field |
| 18 | 6.2 Loudspeakers 6.3 Loudspeaker obscuration 7 Facility requirements 7.1 Method 1 initial open-ear facility performance requirements |
| 19 | 7.2 Test room open-ear baseline facility performance |
| 21 | 7.3 Loudspeaker spacing |
| 22 | 8 Procedures and analyses 8.1 Training 8.2 Stimuli presentation |
| 23 | 8.3 Maintaining head location inside head cylinder 8.4 Order of test conditions |
| 24 | 8.5 Front-back reversal error determination 8.6 Method 1 specific procedures |
| 31 | 8.7 Method 2 specific procedures |
| 33 | 8.8 Method 3 specific procedures 9 Uncertainty estimates and calculations 9.1 Method 1 |
| 35 | 9.2 Method 2 |
| 37 | 9.3 Method 3 |
| 38 | 10 Reporting requirements 10.1 Test facility 10.2 Facility performance |
| 39 | 10.3 Subject information 10.4 Uncertainty analysis 10.5 Head-worn device ii © 2019 Acoustical Society of America – All rights reserved 10.6 Room information 10.7 Results |
| 41 | Annex A (normative) Measurement of unity gain A.1 Gain setting for active head-worn devices |
| 42 | Annex B (informative) Design guidelines for Method 1 acoustic spaces B.1 Loudspeakers B.2 Equalization B.3 Masking noise B.4 Reverberation time B.5 Ambient noise level B.6 Loudspeaker placement – Distance from walls and other reflecting surfaces |
| 43 | Annex C (normative) Measurement of head dimensions, scaled photos of pinnae, and earcanal diameter C.1 Anthropometric measurements C.2 Scaled photo documentation of pinnae C.3 Measurement of earcanal diameter |
| 45 | Annex D (informative) Method 4 to measure localization acuity D.1 Description of method D.2 Subject qualification D.3 Test device requirements D.4 Sound field requirements D.5 Facility requirements |
| 46 | D.6 Method 4 specific procedures |
| 48 | D.7 Method 4 uncertainty calculations |
| 50 | D.8 Method 4 reporting |
| 51 | Annex E (normative) Subject questionnaire (ANSI/ASA S3.71-2019 |
| 52 | Bibliography |
