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هذه الوثيقة محمية بالقانون
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جميع الحقوق محفوظة لهيئة لتقييس لدول مجلس التعاون لدول الخليج العربية. ما لم ينص على خلاف ذلك، لا يجوز إعادة إنتاج أي جزء من هذا المنشور أو استخدامه بأي شكل آخر أو بأي وسيلة، إلكترونية أو ميكانيكية، بما في ذلك التصوير، أو النشر على الإنترنت أو الإنترانت، دون إذن كتابي مسبق من هيئة التقييس لدول مجلس التعاون لدول الخليج العربية على العنوان أدناه أو الدول الأعضاء في الهيئة داخل بلدانهم.
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All rights reserved to GCC Standardization Organization (GSO). Unless otherwise specified, 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, without prior written permission. Permission can be requested from either GSO at the address below or GSO's member body in the country of the requester.
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Outreach Dept, Knowledge Management Section
GCC Standardization Organization (GSO)
P.O.Box: 85245 Riyadh 11691
Kingdom of Saudi Arabia
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إدارة التواصل، قسم إدارة المعرفة
هيئة التقييس لدول مجلس التعاون لدول الخليج العربية (GSO)
ص. ب: 85245 الرياض 11691
المملكة العربية السعودية
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هيئة التقييس لدول مجلس التعاون لدول الخليج العربية هيئة إقليمية تضم في عضويتها أجهزة التقييس الوطنية في الدول الأعضاء ، ومن مهام الهيئة إعداد المواصفات القياسية واللوائح الفنية الخليجية بواسطة لجان فنية متخصصة.
قرر المجلس الفني لهيئة التقييس لدول مجلس التعاون لدول الخليج العربية في الاجتماع رقم (29) الذي عقد بتاريخ 05/08/1435هـ ،الموافق 01/04/2013م اعتماد المواصفة القياسية الخليجية رقم GSO ISO 11654:2013 وعنوانها "الصوتيات -- ماصات الصوت للاستخدام في المباني - معدل امتصاص الصوت" باللغة الانجليزية التي تم دراستها وتبنيها بالمصادقة عبر المسار السريع عن المنظمة الدولية للتقييس رقم ISO 11654:1997.
GCC Standardization Organization (GSO) is a regional Organization which consists of the National Standards Bodies of GCC member States. One of GSO main function is to issue Gulf Standards/Technical regulations through specialized technical committees (TCs).
GSO Technical Council in its meeting number (29) which was held on 05/08/1435 H , which corresponds to 01/04/2013 decided to approve GSO Standard No GSO ISO 11654:2013 and titled "Acoustics -- Sound absorbers for use in buildings -- Rating of sound absorption " in English language which was studied and adopted by endorsement through fast track from International Organization for Standardization Standard No ISO 11654:1997 .
INTERNATIONAL STANDARD | ISO 11654 First edition 1997-03-27 | ||
Acoustics — Sound absorbers for use in buildings — Rating of sound absorption Acoustique — Absorbants pour l'utilisation dans les bâtiments — Évaluation de l'absorption acoustique | |||
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© ISO 1997 — All rights reserved., Published in Switzerland
All rights reserved. Unless otherwise specified, 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, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester.
ISO copyright office
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1.1 This International Standard specifies a method by which the frequency-dependent values of the sound absorption coefficient can be converted into a single number. Before this is done, the one-third-octave band values of the sound absorption coefficient measured in accordance with ISO 354 are converted into octave bands.
In annex В a classification method, based on these single numbers, is given for information.
1.2 The single-number rating specified in this International Standard can be used to formulate requirements and to describe acoustical properties of sound-absorbing products to be used for routine applications in normal offices, corridors, class rooms, hospitals, etc. The rating is not appropriate when the products are to be used in qualified environments requiring careful acoustical design by expertise. In such cases, only complete sound absorption data as a function of frequency are satisfactory.
This International Standard is not applicable unless the applications cover the whole frequency range of the reference curve. If only a part of this range is of interest, it may be more appropriate to look for products with a good sound absorption within this range only. The shape indicators described in this International Standard give some guidance in identifying such products which may have a relatively low single number but a much higher potential if a more restricted frequency range is considered. Such products should be judged from the complete sound absorption curve.
As the rating curve in this International Standard has as a lower limit the 250 Hz octave band, the rating is not appropriate below this frequency. If such low frequencies are of interest, reference must be made to the complete sound absorption curve.
This International Standard is, in principle, applicable to all building products for which the sound absorption coefficient has been determined in accordance with ISO 354. It is, however, often not suitable for application to single items, such as chairs, baffles, etc., nor is it applicable to road barriers and road surfaces.
The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards.