AS 60118.7-2007

Table of Contents

1 -  AS 60118.7-2007 Hearing aids Part 7: Measurement of the performance characteristics of hearing aids for production, supply and delivery quality assurance purposes
4 -  PREFACE
5 -  CONTENTS
7 -  1 Scope
7 -  2 Normative references
7 -  3 Terms and definitions
10 -  4 General conditions
10 -  4.1 Acoustic test method
10 -  4.2 Reporting of data
10 -  5 Nominal characteristics and tolerances
11 -  6 Test box and test equipment
11 -  6.1 General
11 -  6.2 Unwanted stimuli in the test box
11 -  6.3 Sound source
11 -  6.4 Acoustic coupler
11 -  6.5 Measurement system for the measurement of sound pressure level and harmonic distortion in the acoustic coupler
12 -  7 Test conditions
12 -  7.1 General
12 -  7.2 Control of the sound field
14 -  7.3 Normal operating conditions for a hearing aid
16 -  8 Measurements, specifications and tolerances
16 -  8.1 Frequency response curves
16 -  8.2 Output sound pressure level frequency response curve for an input sound pressure level of 90 dB (OSPL90 frequency response curve)
17 -  8.3 Full-on acoustic gain response curve
17 -  8.4 Basic frequency response curve at reference test gain setting
19 -  8.5 Battery current
19 -  8.6 Total harmonic distortion
19 -  8.7 Equivalent input nois
20 -  8.8 Additional measurements for hearing aids having induction pick-up coil
20 -  8.9 Additional measurements applying to AGC hearing aids
21 -  9 Maximum permitted expanded uncertainty of measurements
23 -  Bibliography

Abstract

Adopts IEC 60118-7 to give recommendations for the measurement of the performance characteristics of air-conduction hearing aids of a particular model for production, supply and delivery quality assurance properties.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Standards Australia
Pages
ISBN
Committee	AV-003
Supersedes	AS 1088.7-1987 DR 06472 CP