IEC 60645-6:2009

Electroacoustics - Audiometric equipment - Part 6: Instruments for the measurement of otoacoustic emissions

IEC 60645-6:2009 applies to instruments designed primarily for the measurement of otoacoustic emissions in the human external acoustic meatus evoked by acoustic probe pulses or tones. This standard defines the characteristics to be specified by the manufacturer, lays down performance specifications for two types of instruments and specifies the functions to be provided on these types. IEC 60645-6:2009 describes methods of test to be used for approval testing and guidance on methods for undertaking routine calibration. The purpose of IEC 60645-6:2009 is to ensure that measurements made under comparable test conditions with different instruments complying with the standard will be consistent. Instruments which provide a measurement function not specifically within the scope of the standard shall still comply with any relevant requirements. This standard is not intended to restrict development or incorporation of new features, nor to discourage innovative approaches.

Electroacoustique - Equipements audiométriques - Partie 6: Instruments pour la mesure des émissions otoacoustiques

La CEI 60645-6:2009 s'applique aux instruments conçus principalement pour la mesure des émissions otoacoustiques dans le conduit auditif externe humain qui sont évoquées par des impulsions ou des sons provenant d'une sonde acoustique. La présente norme définit les caractéristiques qui doivent être spécifiées par le fabricant, établit des spécifications de performance pour deux types d'instruments et spécifie les fonctionnalités à prévoir sur ces deux types. La CEI 60645-6:2009 décrit les méthodes d'essai à utiliser pour les essais d'homologation et des lignes directrices pour réaliser l'étalonnage de routine. La CEI 60645-6:2009 a pour objet d'assurer que des mesures réalisées dans des conditions d'essai comparables avec différents instruments conformes à cette norme seront cohérentes. Les instruments qui assurent une fonction de mesure qui n'entre pas spécifiquement dans le domaine d'application de la présente norme doivent toujours être conformes aux exigences les concernant quelles qu'elles soient. Cette norme n'est pas destinée à limiter le développement ou l'ajout de nouvelles caractéristiques ni à décourager les approches innovantes.

General Information

• Status: Published
• Publication Date: 28-Apr-2009
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 17.140.50 - Electroacoustics
• Technical Committee: TC 29 - Electroacoustics
• Drafting Committee: WG 10 - TC 29/WG 10
• Current Stage: DELPUB - Deleted Publication
• Start Date: 31-Jul-2021
• Completion Date: 10-Mar-2022

Relations

• Revised: IEC 60645-6:2022 - Electroacoustics - Audiometric equipment - Part 6: Instruments for the measurement of otoacoustic emissions
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60645-6 ®
Edition 1.0 2009-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electroacoustics – Audiometric equipment –
Part 6: Instruments for the measurement of otoacoustic emissions

Electroacoustique – Equipements audiométriques –
Partie 6: Instruments pour la mesure des émissions otoacoustiques

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IEC 60645-6 ®
Edition 1.0 2009-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electroacoustics – Audiometric equipment –
Part 6: Instruments for the measurement of otoacoustic emissions

Electroacoustique – Equipements audiométriques –
Partie 6: Instruments pour la mesure des émissions otoacoustiques

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
P
CODE PRIX
ICS 17.140.50 ISBN 978-2-88910-242-6
– 2 – 60645-6 © IEC:2009
CONTENTS
FOREWORD.4
INTRODUCTION.6
1 Scope.7
2 Normative references .7
3 Terms and definitions .8
4 Requirements for specific instruments .9
5 General specifications .9
5.1 Acoustic stimulus system .9
5.1.1 General requirements .9
5.1.2 Stimulus types .9
5.1.3 Stimulus frequency range .10
5.1.4 Stimulus level .10
5.1.5 Harmonic distortion .11
5.2 Test quality assuring system .11
5.2.1 General .11
5.2.2 Test quality assurance.11
5.2.3 Individual stimulus recordings.11
5.3 Measuring system .11
5.3.1 Units of measurement.11
5.3.2 Measurement range.11
5.3.3 Accuracy of measurement .11
5.3.4 Frequency range .11
5.3.5 Noise reduction .11
5.3.6 Response detection.12
5.3.7 Quality estimates.12
5.3.8 Normative values.12
5.4 Presentation of results .12
5.4.1 General .12
5.4.2 Primary results .12
5.4.3 Secondary results.13
6 Demonstration of conformity with specifications.13
6.1 General .13
6.2 Probe signal .13
6.2.1 Probe signal spectrum .13
6.2.2 Probe signal level and harmonic distortion.13
6.3 Maximum permitted expanded uncertainty of measurements U .13
max
6.4 Function of the complete system .14
7 General requirements .14
7.1 Marking .14
7.2 Instruction manual.14
7.3 Safety requirements .14
7.4 Immunity to power and radiofrequency fields .14
7.5 Warm-up time.15
7.6 Voltage supply variation and environmental conditions .15
7.6.1 Mains operation.15
7.6.2 Battery operation .15

60645-6 © IEC:2009 – 3 –
7.6.3 Environmental conditions.15
8 Additional characteristics to be specified by the manufacturer .15
9 Routine calibration .15
Bibliography.16

Table 1 – Mandatory functions for otoacoustic emission instruments .9
Table 2 – Documentation of test conditions, parameters and results .12
Table 3 – Values of U for basic measurements .14
max
– 4 – 60645-6 © IEC:2009
INTERNATIONAL ELECTROTECHNICAL COMMISSION
_____________
ELECTROACOUSTICS –
AUDIOMETRIC EQUIPMENT –
Part 6: Instruments for the measurement
of otoacoustic emissions
FOREWORD
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