Table of Contents

FOREWORD<br>INTRODUCTION<br>1 Scope<br>2 Normative references<br>3 Terms, definitions and abbreviated terms<br>4 Mechanical design of the 0,4 cm[3] coupler<br>5 Calibration<br>6 Coupling of receivers and hearing aids to the<br>&nbsp;&nbsp;&nbsp;coupler<br>7 Transfer impedance of the 0,4 cm[3] coupler<br>8 Comparison of the 0,4 cm[3], the 2 cm[3] coupler<br>&nbsp;&nbsp;&nbsp;and the occluded-ear simulator<br>9 Maximum permitted expanded uncertainty for<br>&nbsp;&nbsp;&nbsp;coupler conformance testing<br>10 Measurements using the 0,4 cm[3] coupler<br>Annex A (informative) - Response transforms<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;between the 0,4 cm[3] coupler and the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;occluded-ear simulator<br>Annex B (informative) - Measurement and modeling<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;of the transfer impedance of the 0,4 cm[3]<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;coupler<br>Bibliography

Abstract

Defines a coupler and measurement methods to characterise the electroacoustic performance of hearing aids and insert earphones primarily in the range of 8 kHz to 16 kHz.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	British Standards Institution
Pages
ISBN
Committee	EPL/29