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AS IEC 61669-2003 (R2014)

AS IEC 61669-2003 (R2014)

Electroacoustics - Equipment for the measurement of real-ear acoustical characteristics of hearing aids

Standards Australia

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Table of Contents

1 -  AS IEC 61669-2003 ELECTROACOUSTICS-EQUIPMENT FOR THE MEASUREMENT FO REAL-EAR ACOUSTICAL CHARACTERISTICS OF HEARING AIDS
4 -  PREFACE
 5 -  CONTENTS
 7 -  INTRODUCTION
 9 -  1 Scope
 9 -  2 Normative references
 9 -  3 Terms and definitions
9 -  3.1 test signal
 10 -  3.2 subject
 10 -  3.3 subject reference point
 10 -  3.4 test axis
 10 -  3.5 working distance
 10 -  3.6 sound pressure level (SPL)
 10 -  3.7 band sound pressure level
 10 -  3.8 test signal level
 10 -  3.9 equalization
 10 -  3.10 reference microphone controlling microphone
 10 -  3.11 sound inlet
 11 -  3.12 field reference point
 11 -  3.13 probe microphone
 11 -  3.14 test ear
 11 -  3.15 measurement point
 11 -  3.16 test signal type
 11 -  3.17 concurrent equalization real time equalization
 11 -  3.18 stored equalization
 11 -  3.19 substitution method
 11 -  3.20 modified pressure method
 11 -  3.21 differential comparison
 12 -  3.22 real-ear unaided response (REUR)
 12 -  3.23 real-ear unaided gain (REUG)
 12 -  3.24 real-ear occluded response (REOR)
 12 -  3.25 real-ear occluded gain (REOG)
 12 -  3.26 real-ear aided response (REAR)
 12 -  3.27 real-ear aided gain (REAG)
 12 -  3.28 real-ear insertion gain (REIG)
 12 -  3.29 curve
 13 -  3.30 crest factor
 13 -  3.31 uncertainty of measurement
 13 -  3.32 combined standard uncertainty of a measurement
 13 -  3.33 expanded uncertainty of a measurement
 13 -  3.34 coverage factor
 13 -  4 Limitations
 14 -  5 General requirements
14 -  5.1 General
 14 -  5.2 Safety requirements
 14 -  5.3 Warm-up time
 14 -  5.4 Environmental conditions
 14 -  5.5 Power supply variation
 15 -  5.6 Immunity to power and radio frequency fields
 15 -  5.7 Interface connections
 15 -  6 Test signal characteristics
15 -  6.1 Test signal
 15 -  6.2 Sound source
 15 -  6.3 Test signal level
 15 -  6.4 Test signal level indication
 15 -  6.5 Equalization
 16 -  6.6 Frequency
 16 -  6.7 Harmonic distortion
 16 -  6.8 Equipment for automatic sweep frequency recording
 16 -  6.9 Integrity of test signal
 16 -  7 Sound measurement
16 -  7.1 Probe microphone measurement
 16 -  7.2 Noise floor of probe microphone measurement
 16 -  7.3 Attenuation of probe microphone to external signals
 17 -  8 Data acquisition, analysis and presentation
17 -  8.1 General
 17 -  8.2 Output indication
 17 -  8.3 Graphical printout
 17 -  9 Calibration
 17 -  10 Demonstration of conformity with specifications and test procedures
17 -  10.1 General
 18 -  10.2 Environmental conditions and power supply variation
 18 -  10.3 Immunity to power and radio frequency fields
 18 -  10.4 Test signals
18 -  10.4.1 Signal accuracy
 18 -  10.4.2 Accuracy of control
 19 -  10.5 Sound measurement
19 -  10.5.1 Measurement accuracy
 19 -  10.5.2 Noise floor of probe microphone measurement
 19 -  10.5.3 Attenuation of probe microphone to external signals
 19 -  11 Maximum permitted expanded uncertainty of measurements
 20 -  12 Marking and instruction manual
20 -  12.1 Marking
 20 -  12.2 Software version
 20 -  12.3 Instruction manual
 21 -  Bibliography

Abstract

Specifies the general requirements for test equipment designed for use in measuring the real-ear acoustical characteristics of hearing aids and describes the terminology used. This Standard is identical with and reproduced from IEC 61669:2001.

RECONFIRMATION NOTICE
Technical Committee AV-003 has reviewed the content of this publication and in
accordance with Standards Australia procedures for reconfirmation, it has been determined
that the publication is still valid and does not require change.
Certain documents referenced in the publication may have been amended since the original
date of publication. Users are advised to ensure that they are using the latest versions of
such documents as appropriate, unless advised otherwise in this Reconfirmation Notice.
Approved for reconfirmation in accordance with Standards Australia procedures for
reconfirmation on 22 May 2014.
The following are represented on Technical Committee AV-003:
Association of Australian Acoustical Consultants
Australian Acoustical Society
Australian Chamber of Commerce and Industry
Australian Council of Trade Unions
Department of Commerce, Worksafe Division, Western Australia
Department of Defence (Australian Government)
Engineers Australia
National Acoustic Laboratories
New South Wales Nurses' Association
WorkSafe Victoria

Scope

This International Standard specifies the general requirements for test equipment designed
for use in measuring the real-ear acoustical characteristics of hearing aids and describes the
terminology used.
The purpose of this International Standard is to ensure that measurements of real-ear acoustical characteristics of a hearing aid on a given human ear, performed with different test equipment which comply with this International Standard using methods described in ISO 12124, shall give substantially the same results.

General Product Information

Document Type Standard
Status Current
Publisher Standards Australia
ProductNote Reconfirmed 4/06/2014.
This standard has been reconfirmed in Australia in 2014 and remains current in New Zealand.
Reconfirmation Notice 4/06/2014
Committee AV-003
Supersedes
  • DR 02547 CP
  • DR 02542-02547 CP

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