ISO INTERNATIONAL STANDARD 24501 First edition 2010-12-15 Ergonomics Accessible design - Sound pressure levels of auditory signals for consumer products Ergonomie-Conception accessible-Niveaux depression acoustique des signaux auditifs pour produits de consommation courante Reference number ISO 24501:2010(E) @ ISO 2010 IHSunder Not for Resale ISO 24501:2010(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below COPYRIGHTPROTECTEDDOCUMENT @ISO2010 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either isO at the address below or ISo's member body in the country of the requester. ISO copyright office Case postale 56. CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ Iso 2010 -All rights reserved I without license from IHS Not for Resale ISO 24501:2010(E) Contents Page Foreword i Introduction 1 Scope 2 Normative references 3 Terms and definitions. 4 Symbols.. 5 Range of sound pressure levels of auditory signals.. 5.1 General ... 5.2 When not considering the masking effect of an interfering sound , 5.2.1 General ..... 5.2.2 Method using octave-band analysis or one-third-octave-band analysis . 5.3 When taking the masking effect of interfering sound into consideration.. 5.3.1 Method using A-weighted sound pressure level measurement. 5.3.2 Method using octave-band analysis.... 5.3.3 Method using one-third-octave-band analysis.. Annex A (normative) Method for measuring the sound pressure level of an auditory signal.... Annex B (normative) Method for measuring the sound pressure level of interfering sound... Annex C (informative) Example of the record of measurement conditions and results . ..14 Annex D (informative) Examples of measurement and range setting of the sound pressure level of auditory signals.. 16 Bibliography 21 Copyright International Organization forStandardizallon'ghts reserved ii from IHS Not for Resa