IEC 60645-1 : 4.0

Table of Contents

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements by type and class of audiometer
5 General requirements
6 Test signals
7 Transducers
8 Signal level control
9 Reference tone
10 Calibration
11 Electrical output of test signals
12 Audiogram format
13 Test requirements to demonstrate conformity
14 Maximum permitted expanded uncertainty of
   measurements U[max]
15 Marking and instruction manual
Annex A (informative) - Relationship between
        tolerance interval, corresponding acceptance
        interval and the maximum permitted
        uncertainty of measurement
Bibliography

Abstract

Describes general requirements for audiometers designed for use in determining hearing threshold levels, relative to standard reference threshold levels established by means of psychoacoustic test methods, and those designed to perform psychoacoustic tests using speech material.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	International Electrotechnical Committee
Pages
ISBN
Committee	TC 29
Supersedes	IEC 60177 : 1965 IEC 60178 : 1965