DIN EN ISO 389-9-2009 Acoustics - Reference zero for the calibration of audiometric equipment - Part 9 Preferred test conditions for the determination of reference hearing threshol.pdf

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1、December 2009DEUTSCHE NORM English price group 14No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 13.140!$oo“1567676www

2、.din.deDDIN EN ISO 389-9Acoustics Reference zero for the calibration of audiometric equipment Part 9: Preferred test conditions for the determination of referencehearing threshold levels (ISO 389-9:2009)English version of DIN EN ISO 389-9:2009-12Akustik Standard-Bezugspegel fr die Kalibrierung audio

3、metrischer Gerte Teil 9: Vorzugs-Messbedingungen zur Bestimmung von Bezugs-Hrschwellenpegeln(ISO 389-9:2009)Englische Fassung DIN EN ISO 389-9:2009-12www.beuth.deDocument comprises pages17DIN EN ISO 389-9:2009-12 Start of validity This standard is valid from 1 December 2009. National foreword The pr

4、eceding Draft Standard was E DIN ISO 389-9:2006-07. This standard has been prepared by Technical Committee ISO/TC 43 “Acoustics” in collaboration with Technical Committee CEN/TC 211 “Acoustics” (Secretariat: DS, Denmark). The responsible German body involved in its preparation was the DKE Deutsche K

5、ommission Elektrotechnik Elektronik Informationstechnik im DIN und VDE (www.dke.de) (German Commission for Electrotechnical Engineering, Electronics and Information Technology of DIN and VDE), Working Committee GUK 821.6 Hrgerte und audiometrische Messtechnik. For undated references in the normative

6、 text (reference to a standard without a date and without reference to a specific subclause, table, figure, etc.), the latest valid edition of the referenced standard applies. For dated references in the normative text, only the edition cited applies. The DIN Standards corresponding to the Internati

7、onal Standards and documents referred to in this document are as follows: ISO Standard German Standard Title ISO 266 DIN EN ISO 266 Acoustic Preferred frequencies ISO 389-1:1998 DIN EN ISO 389-1:2000-09 Acoustics Reference zero for the calibration of audiometric equipment Part 1: Reference equivalen

8、t threshold sound pressure levels for pure tones and supra aural earphones ISO 389-2 DIN EN ISO 389-2 Acoustics Reference zero for the calibration of audiometric equipment Part 2: Reference equivalent threshold sound pressure levels for pure tones and insert earphones ISO 389-3 DIN EN ISO 389-3 Acou

9、stics Reference zero for the calibration of audiometric equipment Part 3: Reference equivalent threshold force levels for pure tones and bone vibrators ISO 389-5 DIN EN ISO 389-5 Acoustics Reference zero for the calibration of audiometric equipment Part 5: Reference equivalent threshold sound pressu

10、re levels for pure tones in the frequency range 8 kHz to 16 kHz ISO 389-6 DIN EN ISO 389-6 Acoustics Reference zero for the calibration of audiometric equipment Part 6: Reference hearing threshold levels for test signals of short duration 2 DIN EN ISO 389-9:2009-12 ISO Standard German Standard Title

11、 ISO 389-7 DIN EN ISO 389-7 Acoustics Reference zero for the calibration of audiometric equipment Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions ISO 389-8 DIN EN ISO 389-8 Acoustics Reference zero for the calibration of audiometric equipment Part 8: Re

12、ference equivalent threshold sound pressure levels for pure tones and circumaural earphones ISO 8253-1:aDIN ISO 8253-1 Acoustics Audiometric test methods Part 1: Basic pure-tone air and bone conduction threshold audiometry ISO 8253-2:bDIN ISO 8253-2 Acoustics Audiometric test methods Part 2: Sound f

13、ield audiometry with pure tone and narrow-band test signals ISO/IEC Guide 98-3 DIN V ENV 13005 Guide to the expression of uncertainty in measurement aUnder preparation (Revision of ISO 8253-1:1989). bUnder preparation (Revision of ISO 8253-2:1992). 3 DIN EN ISO 389-9:2009-12 4 This page is intention

14、ally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 389-9 May 2009 ICS 13.140 English Version Acoustics Reference zero for the calibration of audiometric equipment Part 9: Preferred test conditions for the determination of reference hearing threshold levels (ISO 389-9:2009) Acoustiqu

15、e Zro de rfrence pour ltalonnage dquipements audiomtriques Partie 9: Conditions dessai prconises pour la dtermination des niveaux liminaires daudition de rfrence (ISO 389-9:2009) Akustik Standard-Bezugspegel fr die Kalibrierung audiometrischer Gerte Teil 9: Vorzugs-Messbedingungen zur Bestimmung von

16、 Bezugs-Hrschwellenpegeln (ISO 389-9:2009) This European Standard was approved by CEN on 30 April 2009. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration.

17、Up-to-date lists and bibliographical references 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

18、under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece

19、, Hungary, Iceland, Ireland, Italy, Latvia, 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

20、Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 389-9:2009: EEN ISO 389-9:2009 (E) DIN EN ISO 389-9:2009-12 2Contents Seite Foreword .3 Introduction.4 1 Scope.5 2 Normative referen

21、ces.5 3 Terms and definitions6 4 Test conditions.6 4.1 Test subjects .6 4.2 Maximum ambient noise levels 6 4.3 Test procedure .7 5 Audiometric equipment .7 5.1 General 7 5.2 Transducers7 5.3 Test signals.8 6 Reporting of data10 Annex A (normative) Questionnaire for hearing tests 11 Annex B (informat

22、ive) Background explanation12 Bibliography13 Foreword This document (EN ISO 389-9:2009) has been prepared by Technical Committee ISO/TC 43 “Acoustics“ in collaboration with Technical Committee CEN/TC 211 “Acoustics”, the secretariat of which is held by DS. This European Standard shall be given the s

23、tatus of a national standard, either by publication of an identical text or by endorsement, at the latest by November 2009, and conflicting national standards shall be withdrawn at the latest by November 2009. Attention is drawn to the possibility that some of the elements of this document may be th

24、e subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgi

25、um, Bulgaria, Cyprus, 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

26、The text of ISO 389-9:2009 has been approved by CEN as a EN ISO 389-9:2009 without any modification. EN ISO 389-9:2009 (E) DIN EN ISO 389-9:2009-12 3Introduction ISO/TC 43, Acoustics, is responsible for the production of International Standards specifying human hearing thresholds for use in the cali

27、bration of audiometric equipment. The Committee bases its work on data from independent laboratories throughout the world. Unfortunately, problems have existed in the past in trying to relate the data from experiments carried out by different laboratories in different parts of the world, all of whic

28、h have had the same objective, but which lacked a common set of criteria for subject selection, methods of test and reporting of data, etc. ISO/TC 43 has developed this part of ISO 389 in order to collate the data that is being, or will be, produced in the future, and to encourage other laboratories

29、 to participate in these activities. The test conditions are aimed at providing guidance to researchers to ensure that the collation of future work is made easier, which in turn ought to lead to a more rapid production of relevant standards. EN ISO 389-9:2009 (E) DIN EN ISO 389-9:2009-12 41 Scope Th

30、is part of ISO 389 specifies test conditions for determining the hearing thresholds of subjects for the purpose of establishing standardized values for reference hearing threshold levels. 2 Normative references The following referenced documents are indispensable for the application of this document

31、. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including amendments) applies. ISO 389-1:1998, Acoustics Reference zero for the calibration of audiometric equipment Part 1: Reference equivalent threshold sound pressure le

32、vels for pure tones and supra-aural earphones1)ISO 389-2, Acoustics Reference zero for the calibration of audiometric equipment Part 2: Reference equivalent threshold sound pressure levels for pure tones and insert earphones1)ISO 389-3, Acoustics Reference zero for the calibration of audiometric equ

33、ipment Part 3: Reference equivalent threshold force levels for pure tones and bone vibrators ISO 389-6, Acoustics Reference zero for the calibration of audiometric equipment Part 6: Reference threshold of hearing for test signals of short duration ISO 389-7, Acoustics Reference zero for the calibrat

34、ion of audiometric equipment Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions ISO 389-8, Acoustics Reference zero for the calibration of audiometric equipment Part 8: Reference equivalent threshold sound pressure levels for pure tones and circumaural ear

35、phones ISO 8253-1:2), Acoustics Audiometric test methods Part 1: Basic pure-tone air and bone conduction threshold audiometry ISO 8253-2:3), Acoustics Audiometric test methods Part 2: Sound field audiometry with pure tone and narrow-band test signals 1) Under revision. 2) To be published. (Revision

36、of ISO 8253-1:1989) 3) To be published. (Revision of ISO 8253-2:1992) EN ISO 389-9:2009 (E) DIN EN ISO 389-9:2009-12 5ISO/IEC Guide 98-3, Uncertainty of measurement Part 3: Guide to the expression of uncertainty in measurement (GUM:1995) IEC 60318-1, Electroacoustics Simulators of human head and ear

37、 Part 1: Ear simulator for the calibration of supra-aural and circumaural earphones 4)IEC 60318-3, Electroacoustics Simulators of human head and ear Part 3: Acoustic coupler for the calibration of supra-aural earphones used in audiometry IEC 60318-4, Electroacoustics Simulators of human head and ear

38、 Part 4: Occluded-ear simulator for the measurement of earphones coupled to the ear by ear inserts 5)IEC 60318-5, Electroacoustics Simulators of human head and ear Part 5: 2 cm3coupler for the measurement of hearing aids and earphones coupled to the ear by means of ear inserts IEC 60318-6, Electroac

39、oustics Simulators of human head and ear Part 6: Mechanical coupler for the measurement of bone vibrators IEC 60645-1:2001, Electroacoustics Audiological equipment Part 1: Pure-tone audiometers IEC 60645-3:2007, Electroacoustics Audiometric equipment Part 3: Test signals of short duration IEC 60645-

40、4, Audiometers Part 4: Equipment for extended high-frequency audiometry 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 8253-1 and ISO 389-6 apply. 4 Test conditions 4.1 Test subjects 4.1.1 At least 25 subjects shall participate, both males and femal

41、es, preferably represented in equal numbers. 4.1.2 The subjects shall be in the age range 18 years to 25 years inclusive. 4.1.3 The subjects shall be otologically normal, i.e. be in a normal state of health, be free from all signs or symptoms of ear disease and from obstructing wax in the ear canals

42、, and have no history of undue exposure to noise, exposure to potentially ototoxic drugs or familial hearing loss. Minimum information to be collected is given in Annex A. 4.1.4 Tympanometry shall be performed at the beginning of each test session. Hearing threshold measurements shall be performed o

43、nly if a middle ear pressure in the range 50 daPa has been obtained. 4.2 Maximum ambient noise levels 4.2.1 The acoustic environment in which the test subjects are located during testing shall fulfil the requirements given in ISO 8253-1:, 11.1 and 11.2 for measurement of hearing levels down to 10 dB

44、 with a maximum uncertainty of +2 dB due to ambient noise. The requirements for 8 kHz shall also be applied to the one-third-octave bands from 10 kHz to 16 kHz. 4) To be published. (Revision of IEC 60318-1:1998 and IEC 60318-2:1998) 5) To be published. (Revision of IEC 60711:1981) EN ISO 389-9:2009

45、(E) DIN EN ISO 389-9:2009-12 64.2.2 For typical current supra-aural earphones with sound attenuation as given in ISO 8253-1:, Table 3, conformance with the requirement of 4.2.1 means that noise levels shall be at least 10 dB below the levels given in ISO 8253-1:, Table 2. 4.2.3 If the sound attenuat

46、ion provided by the actual earphone differs from the values given in ISO 8253-1:, Table 3, the maximum permissible level of noise shall be modified accordingly. 4.2.4 For sound field audiometry, the acoustic environment shall fulfil the requirement given in ISO 8253-2:, Clause 6. 4.3 Test procedure

47、Monaural pure-tone hearing threshold levels shall be determined according to ISO 8253-1. Binaural hearing threshold levels shall be determined according to ISO 8253-2. Either the bracketing or ascending method shall be used. Each subject shall have at least one training session with two or three sel

48、ected test signals. 5 Audiometric equipment 5.1 General The audiometric equipment, which is used for control of stimulus gating and stimulus level and for execution of the test procedure, shall fulfill the relevant requirements of IEC 60645-1 (for air- and bone-conduction pure-tone signals and maski

49、ng), IEC 60645-3 (only for signals of short duration) and IEC 60645-4 (only for extended high-frequency signals). Special care shall be taken to avoid detection by the test subjects of any sounds coinciding with the tone and attenuator switching. Calibration of test equipment shall be performed at regular intervals to ensure that levels are within those specified in the prevailing data. ISO 8253-1:, Clause 12 specifies three