BS EN ISO 8253-2-2009 Acoustics - Audiometric test methods - Sound field audiometry with pure-tone and narrow-band test signals《声学 听力试验方法 纯音和窄带试验信号声场测听方法》.pdf
《BS EN ISO 8253-2-2009 Acoustics - Audiometric test methods - Sound field audiometry with pure-tone and narrow-band test signals《声学 听力试验方法 纯音和窄带试验信号声场测听方法》.pdf》由会员分享,可在线阅读,更多相关《BS EN ISO 8253-2-2009 Acoustics - Audiometric test methods - Sound field audiometry with pure-tone and narrow-band test signals《声学 听力试验方法 纯音和窄带试验信号声场测听方法》.pdf(26页珍藏版)》请在麦多课文档分享上搜索。
1、BS EN ISO8253-2:2009ICS 13.140; 17.140.50NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDAcoustics Audiometric testmethodsPart 2: Sound field audiometry withpure-tone and narrow-band testsignals (ISO 8253-2:2009)Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDA
2、RDS, 08/06/2010 01:45, Uncontrolled Copy, (c) BSIThis British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 28 February2010. BSI 2010ISBN 978 0 580 64855 7Amendments/corrigenda issued since publicationDate CommentsBS EN ISO 8253-2:2009National forewordThis
3、British Standard is the UK implementation of EN ISO 8253-2:2009.It supersedes BS EN ISO 8253-2:1998 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee EH/1, Acoustics.A list of organizations represented on this committee can be obtained onrequest to its se
4、cretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 08/06/2010 01:45, U
5、ncontrolled Copy, (c) BSIEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8253-2 December 2009 ICS 13.140 Supersedes EN ISO 8253-2:1998English Version Acoustics - Audiometric test methods - Part 2: Sound field audiometry with pure-tone and narrow-band test signals (ISO 8253-2:2009) Acoustiqu
6、e - Mthodes dessais audiomtriques - Partie 2: Audiomtrie en champ acoustique avec des sons purs et des bruits bande troite comme signaux dessai (ISO 8253-2:2009) Akustik - Audiometrische Prfverfahren - Teil 2: Schallfeld-Audiometrie mit reinen Tnen und schmalbandigen Prfsignalen (ISO 8253-2:2009) Th
7、is European Standard was approved by CEN on 26 October 2009. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical refer
8、ences concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member
9、into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Lat
10、via, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Bruss
11、els 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 8253-2:2009: ELicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 08/06/2010 01:45, Uncontrolled Copy, (c) BSIBS EN ISO 8253-2:2009EN ISO 8253-2:2009 (E) 3 Foreword Th
12、is document (EN ISO 8253-2:2009) has been prepared by Technical Committee ISO/TC 43 “Acoustics“ in collaboration with the Technical Committee CEN/TC 211 “Acoustics” the secretariat of which is held by DS. This European Standard shall be given the status of a national standard, either by publication
13、of an identical text or by endorsement, at the latest by June 2010, and conflicting national standards shall be withdrawn at the latest by June 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be
14、held responsible for identifying any or all such patent rights. This document supersedes EN ISO 8253-2:1998. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, C
15、yprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO
16、 8253-2:2009 has been approved by CEN as a EN ISO 8253-2:2009 without any modification. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 08/06/2010 01:45, Uncontrolled Copy, (c) BSIBS EN ISO 8253-2:2009ISO 8253-2:2009(E) ISO 2009 All rights reserved iiiContents Page Foreword iv Introduction.v
17、1 Scope1 2 Normative references1 3 Terms and definitions .2 4 Test signal characteristics .3 4.1 General .3 4.2 Pure tones 3 4.3 FM tones.4 4.4 Narrow bands of noise4 4.5 Harmonic distortion 4 4.6 Signal gating 5 4.7 Signal level control5 4.8 Means and scales for calibration.5 5 Sound field characte
18、ristics.6 5.1 General .6 5.2 Free sound field.6 5.3 Diffuse sound field 6 5.4 Quasi-free sound field.7 6 Ambient noise levels in the test room.7 7 Preparation and instruction of test subject7 8 Determination of hearing threshold level .8 8.1 General .8 8.2 Monaural testing8 8.3 Binaural testing .8 9
19、 Testing with a hearing aid 8 10 Screening audiometry.8 11 Reporting of data.10 11.1 General .10 11.2 Equipment calibrated by hearing level10 11.3 Equipment calibrated by sound pressure level .10 12 Maintenance and calibration of equipment 10 12.1 General .10 12.2 Intervals between tests.10 12.3 Sta
20、ge A: routine examination and listening tests11 12.4 Stage B: periodic electroacoustic tests11 12.5 Stage C: basic calibration tests .12 Annex A (informative) Graphical display of results.13 Annex B (informative) Correction values for 45 and 90 angles of incidence.15 Bibliography16 Licensed Copy: Wa
21、ng Bin, ISO/EXCHANGE CHINA STANDARDS, 08/06/2010 01:45, Uncontrolled Copy, (c) BSIBS EN ISO 8253-2:2009ISO 8253-2:2009(E) iv ISO 2009 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The w
22、ork of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-govern
23、mental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The
24、 main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are 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.
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