Table of Contents

1 -  AS 60118.9-2007 Hearing aids Part 9: Methods of measurement of characteristics of hearing aids with bone vibrator output
4 -  PREFACE
5 -  CONTENTS
6 -  INTRODUCTION
7 -  1 Scope
7 -  2 Object
7 -  3 General
8 -  4 Explanation of terms
9 -  5 Test equipment
9 -  5.1 Equipment for the measurement of the output force level
10 -  5.2 Equipment for automatic sweep frequency recording
10 -  6 Test conditions
10 -  6.1 General
10 -  6.2 Test space
10 -  6.3 Locating the hearing aid in the sound field
11 -  6.4 Applying the bone vibrator to the mechanical coupler
11 -  7 Measurements
11 -  7.1 Output force level frequency response curve for an input SPL of 90 dB (OFL90) curve)
11 -  7.2 Full-on force level frequency response
12 -  7.3 Basic force level frequency response
12 -  7.4 Effect of tone control position on the basic force level frequency response
12 -  7.5 Battery current
13 -  7.6 Non-linear distortion
13 -  7.7 Internal noise from the hearing aid
13 -  7.8 Characteristics of hearing aids with induction pick-up coil input
13 -  8 Frequency response recording chart
14 -  Annex A Examples of test assemblies

Abstract

Adopts IEC 60118-9 to specify methods of measurement of the characteristics of hearing aids using bone vibrator output.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Standards Australia
Pages
ISBN
Committee	AV-003
Supersedes	DR 06474 CP