ISO INTERNATIONAL STANDARD 11201 Second edition 2010-05-15 Acoustics Noise emitted by machinery and equipment Determination of emission sound pressure levels at a work station and at other specified positions in an essentially free field over a reflecting plane with negligible environmental corrections Acoustique Bruit émis par les machines et équipements Determination des niveaux de pression acoustique d'émission au poste de travail et en d'autres positions spécifiées dans des conditions approchant celles du champ libre sur plan reflechissant avec des corrections Reference number ISO 11201:2010(E) @ ISO 2010 THS unde nse from IHS Not for Resale ISO 11201:2010(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 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 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 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. COPYRIGHT PROTECTED DOCUMENT ISO2010 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, ISsO'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 - Allrights reserved py IHS unde I without license from IHS Not for Resale ISO 11201:2010(E) Contents Page Foreword Introduction 1 Scope 2 Normative references. 3 Terms and definitions 4 Instrumentation 5 Test environment. 6 Measured quantities. 7 Quantities to be determined.. 12 8 Mounting and operation of source under test. 12 9 Microphone positions 4 10 Measurements . 11 Measurement uncertainty .... 12 Information to be recorded.. 13 Test report.... 22 Annex A (normative) Allocation of the accuracy grade (1 or 2). AnnexB(normative)Criteriaforbackgroundnoiseformeasurementsinfreguencybands Annex C (informative) Guidance on the development of information on measurement uncertainty ....26 Annex D (informative) Principles of the methodology 32 Annex E (informative) Example of a test table.. Bibliography... Copyrght International Organization for Standardizalon ghts reserved ii se from IHS Not for Resale