ISO INTERNATIONAL STANDARD 11546-1 First edition 1995-12-15 Acoustics -- Determination of sound insulation performances of enclosures Part 1: Measurements under laboratory conditions (fordeclarationpurposes) Acoustique Détermination de I'isolement acoustique des encoffrements Partie 1: Mesurages dans des conditions de laboratoire faux fins de déclaration) ISO Reference number ISO 11546-1:1995(E) Copyright In No reproduction or networking permitted without license from IHS Not for Resale ISO 11546-1:1995(E Contents Page 1 Scope 2 Normative references 3 Definitions 2 4 Choice of measurement method 3 5 Instrumentation 6 Test methods applicable to enclosures with the actual sound source 5 6.1 General 5 6.2 Determination of sound power insulation 5 6.3 Determination of sound pressure insulation at a specified position 6 Test methods applicable to enclosures without the actual sound source 6 7.1 General 6 7.2 Reciprocity method 6 7.3 Artificial sound source method 7.4 Weighted sound power insulation and sound pressure insulation (reciprocity method) 7.5 Estimated noise insulation due to the enciosure for a specific noise spectrum 8 Uncertainty 8 9 Information to be recorded 8 9.1 Test object 8 9.2 Test conditions 8 9.3 Instrumentation 6 9.4 Acoustical data 9 9.5 Further informatior ?ISO1995 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced microfilm, without permission in writing from the publisher. International Organizationfor Standardization Case Postale 56·CH-1211 Geneve 20·Switzerland Printed in Switzerland CISO ISO 11546-1:1995(E) 10 Information to be reported Annexes A Artificial sound source 10 B Exampleof asource spectrum 12 C Estimated noise insulation due to the enclosure for a specific noisespectrum 13 D Bibliography 14 ili Not for