ISO INTERNATIONAL STANDARD 8579-1 Second edition 2002-08-01 Acceptance code for gear units - Part 1: Test code for airborne sound Code de réception des engrenages sous carter. Partie 1: Code d'essai pour la determination du bruit aérien Reference number ISO 8579-1:2002(E) So @ ISO 2002 ISO 8579-1:2002(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 downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is atrademark 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 parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ?ISO2002 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.ch Printed in Switzerland @ISO2002-Allrights reserved ISO 8579-1:2002(E) Contents Page Foreword.. Introduction 1 Scope 2 Normative references 3 Termsanddefinitions 4 Gear configuration and acoustic environment.. 5 Sound power level determination 6 Determination of emission sound pressure level.. 16 Installation and mounting conditions. 17 8 Operating conditions during sound measurements... .18 9 Information to be recorded. 19 10 Information to be reported.. 19 11 Declaration and verification of sound emission values . Annex A (informative) Examples of microphone positions on the measurement surface for different gear types and sizes... Annex B (informative) Typical sound levels for different gear types and sizes (sound power and sound pressure)..... Annex C (informative) Information for the determination of airborne sound power levels using the methods of ISO 3744:1981 and ISO 3746:1979...... ...44 Bibliography... ..53 n?served ii