BS-ISO-17497-1-2004.pdf
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1、BRITISH STANDARD BS ISO 17497-1:2004 Acoustics Sound-scattering properties of surfaces Part 1: Measurement of the random-incidence scattering coefficient in a reverberation room ICS 91.120.20 ? Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:35:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
2、 BS ISO 17497-1:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 22 July 2004 BSI 22 July 2004 ISBN 0 580 44113 X National foreword This British Standard reproduces verbatim ISO 17497-1:2004 and implements it as the UK national standard.
3、The UK participation in its preparation was entrusted by Technical Committee EH/1, Acoustics, to Subcommittee EH/1/6, Building acoustics, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The Britis
4、h Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publ
5、ication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible internatio
6、nal/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title
7、 page, pages ii to v, a blank page, pages 1 to 12, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27
8、08:35:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 17497-1:2004(E) OSI 4002 INTERNATIONAL STANDARD ISO 17497-1 First edition 2004-05-01 Acoustics Sound-scattering properties of surfaces Part 1: Measurement of the random-incidence scattering coefficient in a reverberation room A
9、coustique Proprits de dispersion du son par les surfaces Partie 1: Mesurage du coefficient de dispersion sous incidence alatoire en salle rverbrante BS ISO 174971:2004 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:35:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS-79471 O1:(4002E) DPlcs
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15、24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS-79471 O1:(4002E) I SO 4002 All irthgs ersedevr iii Contents Page Forewordiv Introduction v 1 Scope 1 2 Normative references . 1 3 Terms and definitions. 1 4 Principle. 2 5 Frequency range. 3 6 Test arrangement 4 6.1 Reverberation room 4 6.2 Turntable
16、and base plate 4 6.3 Test sample . 5 7 Test procedure 6 7.1 Test signals . 6 7.2 Source and receiving equipment 7 7.3 Measurement of impulse responses. 7 7.4 Temperature and relative humidity. 7 7.5 Evaluation of decay curves 7 8 Expression of results 8 8.1 Method of calculation. 8 8.2 Precision 9 8
17、.3 Presentation of results. 10 9 Test report . 10 Annex A (informative) Accuracy of the measurement results. 11 Bibliography . 12 BS ISO 174971:2004 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:35:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS-79471 O1:(4002E) iv I SO 4002 All irthgs
18、ersedevr Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for
19、which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on al
20、l matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are
21、circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held res
22、ponsible for identifying any or all such patent rights. ISO 17497-1 was prepared by Technical Committee ISO/TC 43, Acoustics, Subcommittee SC 2, Building acoustics. ISO 17497 consists of the following parts, under the general title Acoustics Sound-scattering properties of surfaces: Part 1: Measureme
23、nt of the random-incidence scattering coefficient in a reverberation room The following part is under preparation: Part 2: Measurement of the directional diffusion coefficient in a free field BS ISO 174971:2004 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:35:24 GMT+00:00 2006, Uncontrol
24、led Copy, (c) BSI IS-79471 O1:(4002E) I SO 4002 All irthgs ersedevr v Introduction The degree of acoustic scattering from surfaces is very important in all aspects of room acoustics (e.g. in concert halls, sound studios, industrial halls and reverberation chambers). Insufficient scattering may cause
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