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)

ISO 389-9:2009 specifies test conditions for determining the hearing thresholds of subjects for the purpose of establishing standardized values for reference hearing threshold levels.

Akustik - Standard-Bezugspegel für die Kalibrierung audiometrischer Geräte - Teil 9: Vorzugs-Messbedingungen zur Bestimmung von Bezugs-Hörschwellenpegeln (ISO 389-9:2009)

Acoustique - Zéro de référence pour l'étalonnage d'équipements audiométriques - Partie 9: Conditions d'essai préconisées pour la détermination des niveaux liminaires d'audition de référence (ISO 389-9:2009)

L'ISO 389-9:2009 spécifie les conditions d'essai de détermination des seuils d'audition de sujets, pour les besoins de l'établissement de valeurs normalisées des niveaux liminaires d'audition de référence.

Akustika - Referenčna ničla za umerjanje avdiometrov - 9. del: Preferenčni preskus za določanje ravni praga slišnosti (ISO 389-9:2009)

General Information

Status
Published
Publication Date
14-May-2009
Technical Committee
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
15-May-2009
Completion Date
15-May-2009

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Akustik - Standard-Bezugspegel für die Kalibrierung audiometrischer Geräte - Teil 9: Vorzugs-Messbedingungen zur Bestimmung von Bezugs-Hörschwellenpegeln (ISO 389-9:2009)Acoustique - Zéro de référence pour l'étalonnage d'équipements audiométriques - Partie 9: Conditions d'essai préférées pour la détermination des niveaux liminaires de référence (ISO 389-9:2009)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)13.140Vpliv hrupa na ljudiNoise with respect to human beingsICS:Ta slovenski standard je istoveten z:EN ISO 389-9:2009SIST EN ISO 389-9:2009en01-september-2009SIST EN ISO 389-9:2009SLOVENSKI

STANDARD
SIST EN ISO 389-9:2009

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN ISO 389-9May 2009ICS 13.140 English VersionAcoustics - Reference zero for the calibration of audiometricequipment - Part 9: Preferred test conditions for thedetermination of reference hearing threshold levels (ISO 389-9:2009)Acoustique - Zéro de référence pour l'étalonnaged'équipements audiométriques - Partie 9: Conditionsd'essai préconisées pour la détermination des niveauxliminaires d'audition de référence (ISO 389-9:2009)Akustik - Standard-Bezugspegel für die Kalibrierungaudiometrischer Geräte - Teil 9: Vorzugs-Messbedingungen zur Bestimmung von Bezugs-Hörschwellenpegeln (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. Up-to-date lists and bibliographical references concerning such nationalstandards 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 translationunder 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, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre:

Avenue Marnix 17,

B-1000 Brussels© 2009 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 389-9:2009: ESIST EN ISO 389-9:2009

EN ISO 389-9:2009 (E) 2 Contents Page Foreword ..............................................................................................................................................................3 SIST EN ISO 389-9:2009

EN ISO 389-9:2009 (E) 3 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 status 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 the 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, Belgium, 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 The text of ISO 389-9:2009 has been approved by CEN as a EN ISO 389-9:2009 without any modification.

SIST EN ISO 389-9:2009
SIST EN ISO 389-9:2009
Reference numberISO 389-9:2009(E)© ISO 2009

INTERNATIONAL STANDARD ISO389-9First edition2009-05-15Acoustics — Reference zero for the calibration of audiometric equipment — Part 9: Preferred test conditions for the determination of reference hearing threshold levels Acoustique — Zéro de référence pour l'étalonnage d'équipements audiométriques — Partie 9: Conditions d'essai préconisées pour la détermination des niveaux liminaires d'audition de référence

SIST EN ISO 389-9:2009

ISO 389-9:2009(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.

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ISO 2009 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56 • CH-1211 Geneva 20 Tel.

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ii © ISO 2009 – All rights reserved
SIST EN ISO 389-9:2009

ISO 389-9:2009(E) © ISO 2009 – All rights reserved iiiForeword 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 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 all 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 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 responsible for identifying any or all such patent rights. ISO 389-9 was prepared by Technical Committee ISO/TC 43, Acoustics. ISO 389 consists of the following parts, under the general title Acoustics — Reference zero for the calibration of audiometric equipment: ⎯ Part 1: Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones ⎯ Part 2: Reference equivalent threshold sound pressure levels for pure tones and insert earphones ⎯ Part 3: Reference equivalent threshold force levels for pure tones and bone vibrators ⎯ Part 4: Reference levels for narrow-band masking noise ⎯ Part 5: Reference equivalent threshold sound pressure levels for pure tones in the frequency range 8 kHz to 16 kHz ⎯ Part 6: Reference threshold of hearing for test signals of short duration ⎯ Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions ⎯ Part 8: Reference equivalent threshold sound pressure levels for pure tones and circumaural earphones ⎯ Part 9: Preferred test conditions for the determination of reference hearing threshold levels

SIST EN ISO 389-9:2009

ISO 389-9:2009(E) iv © ISO 2009 – All rights reserved Introduction ISO/TC 43, Acoustics, is responsible for the production of International Standards specifying human hearing thresholds for use in the calibration 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 which 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 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.

SIST EN ISO 389-9:2009

INTERNATIONAL STANDARD ISO 389-9:2009(E) © ISO 2009 – All rights reserved 1Acoustics — Reference zero for the calibration of audiometric equipment — Part 9: Preferred test conditions for the determination of reference hearing threshold levels 1 Scope This 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. 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 levels 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 equipment — 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 calibration 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 earphones 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 of ISO 8253-1:1989) 3) To be published. (Revision of ISO 8253-2:1992) SIST EN ISO 389-9:2009

ISO 389-9:2009(E) 2 © ISO 2009 – All rights reserved ISO/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 — 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 — 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 cm3 coupler for the measurement of hearing aids and earphones coupled to the ear by means of ear inserts IEC 60318-6, Electroacoustics — 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 60645-4, 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 females, 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, 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 only 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 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) SIST EN ISO 389-9:2009

ISO 389-9:2009(E) © ISO 2009 – All rights reserved 34.2.2 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 attenuation provided by the actual earphone differs from the values given in ISO 8253-1:—, Table 3, the maximum permissib

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