ISO 226 2023 Acoustics — Normal equal-loudness-level contours

ISO INTERNATIONAL STANDARD 226 Third edition 2023-03 Acoustics Normal equal-loudness- level contours Acoustique - Lignes isosoniques normales Reference number IS0 226:2023(E) ISO @ IS0 2023 IS0 226:2023(E) COPYRIGHTPROTECTED DOCUMENT @IS02023 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on or ISoO's member body in the country of the requester. ISO copyright office CP 40i : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Email:[email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2023- All rights reserved

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本文档由人生无常于 2024-07-15 23:47:16上传分享