ISO INTERNATIONAL STANDARD 23591 First edition 2021-09 Acoustic quality criteria for music rehearsal rooms and spaces Criteres de qualite acoustique pour les salles et locaux de répétition musicale Reference number IS0 23591:2021(E) ISO @ IS0 2021 IS0 23591:2021(E) COPYRIGHT PROTECTED DOCUMENT @ IS02021 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 the internet or an intranet, withoutpriorwrittenpermission.Permission can berequestedfrom eitherIso at theaddress below orIso'smemberbodyinthecountryoftherequester. ISO copyright office CP 401 · Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +4122 749 0111 Email: copyright@iso.org Website: www.iso.org Published in Switzerland ii @ IS0 2021 - All rights reserved