Description
This part of SZNS ISO 8253 specifies procedures and requirements for pure- tone air conduction and bone conduction threshold audiometry. For screening purposes, only pure-tone air conduction audiometric test methods are specified.
TABLE OF CONTENTS
| Content | Page |
| 1 Scope | 1 |
| 2 Normative references | 1 |
| 3 Terms and definitions | 1 |
| 4 General aspects of audiometric measurements | 5 |
| 5 Preparation and instruction of test subjects before audiometric testing and positioning of transducers | 7 |
| 6 Air conduction hearing threshold level determinations using fixed-frequency audiometry | 8 |
| 7 Air conduction hearing threshold level determinations using sweep-frequency audiometry | 12 |
| 8 Bone conduction hearing threshold audiometry | 13 |
| 9 Screening audiometry | 14 |
| 10 Audiograms | 15 |
| 11 Permissible ambient noise | 15 |
| 12 Maintenance and calibration of audiometric equipment | 19 |
| Annex A Measurement uncertainty | 23 |
| Bibliography | 28 |