Principles of Hearing Aid Audiology, Second Edition MARYANNE TATE MALTBY WHURR PUBLISHERS Tate & Maltby 3rd crc 13/12/01 12:11 pm Page i Principles of Hearing Aid Audiology Second Edition This page intentionally left blank Tate & Maltby 3rd crc 13/12/01 12:11 pm Page iii Principles of Hearing Aid Audiology M T M ARYANNE ATE ALTBY DASED, BA, MEd, MSc, FSHAA, EdD, RHAD. HEARING AID AUDIOLOGIST AND AUDIOLOGICAL SCIENTIST Active Hearing, Boston Spa, W. Yorkshire and TRAINING OFFICER Ultravox Group, Wilmslow, Cheshire. W W H U R R P U B L I S H E R S L O N D O N A N D P H I L A D E L P H I A Tate & Maltby 3rd crc 13/12/01 12:11 pm Page iv First Edition published 1994 by Chapman & Hall © Second edition 2002 Whurr Publishers Second edition published by Whurr Publishers Ltd 19b Compton Terrace, London N1 2UN, England and 325 Chestnut Street, Philadelphia PA 19106, USA All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior permission of Whurr Publishers Limited. This publication is sold subject to the conditions that it shall not, by way of trade or otherwise, be lent, resold, hired out, or otherwise circulated without the publisher’s prior consent in any form of binding or cover other than that in which it is published and without a similar condition including this condition being imposed upon any subsequent purchaser. British Library Cataloguing in Publication Data A catalogue record for this book is available from the British Library. ISBN: 1 86156 257 8 Printed and bound in the UK by Athenaeum Press Ltd, Gateshead, Tyne & Wear Tate & Maltby 3rd crc 13/12/01 12:11 pm Page v Contents Foreword vii Acknowledgements ix Part one: Fundamental Sciences 1 1 Acoustics 3 2 Anatomy and physiology of the ear 21 3 Medical aspects of hearing loss 45 4 Speech and intelligibility 67 5 The basic hearing aid system 80 6 Digital hearing aids 106 Part two: The Practice of Hearing Aid Audiology 123 7 The assessment procedure 125 8 Hearing aids and their performance 154 9 Selection and fitting 185 10 Earmoulds 204 11 Evaluation 219 12 Client management and rehabilitation 235 Part three: Special Aspects of Hearing Aid Audiology 257 13 Assessment and management of special problems 259 14 Paediatric provision 290 Glossary 314 References 325 Index 331 v This page intentionally left blank Tate & Maltby 3rd crc 13/12/01 12:11 pm Page vii Foreword The second edition of Maryanne Maltby’s text Principles of Hearing Aid Audiologyis both welcome and timely. At a time when we are seeing major changes in the UK in provision, technology and rehabilitative approaches in hearing aid audiology, students in training and experienced practi- tioners alike will find this text a mine of useful information. The text has been totally rewritten and updated from the first edition and contains elements basic to the practice of hearing aid audiology, together with a clear exposé of advanced modern thinking. Written by a person with a wealth of experience in both training and practical hearing aid fitting, Principles of Hearing Aid Audiologyis a must for all prospective and practising hearing aid audiologists. It is absolutely relevant to the needs of today’s hearing aid dispenser who has a responsi- bility to furnish patients with ongoing experiences of excellence in clinical practice. The presentation of the material is clear and precise yet not excessively technical in style. A welcome addition to the recommended reading list of all major training courses for hearing aid dispensers, Principles of Hearing Aid Audiology will prove to be a cornerstone in training and ongoing educa- tion in both the UK and further afield. Michael Nolan BSc, PhD, MSHAA Registrar of the British Society of Hearing Aid Audiologists vii This page intentionally left blank Tate & Maltby 3rd crc 13/12/01 12:11 pm Page ix Acknowledgements I greatly appreciate the assistance given in the preparation of this new edition by: David Gaszczyk (BMI Healthcare) – graphs, computer diagrams and index. Karen Shepherd (A&M Hearing Ltd) – digital hearing aids. Roger Lewin (Phonak UK Ltd) – algorithms. Lesley Pestell (Starkey Ltd) – impressions. Peter Bodo (Rayovac UK Ltd) – battery specifications. I should also like to express my sincere thanks to all those who helped or encouraged me in any way and especially to Roger Lewin, David Gaszczyk, Paul Weston and Robert Rendell for their comments. Maryanne Tate Maltby ix
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