1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 8253-1:2010Acoustics Audiometric testmethodsPart 1: Pure-tone air and bone conductionaudiometry (ISO 8253-1:2010)BS EN ISO 8253-1:2010 BRITISH STANDARDNational foreword
2、This British Standard is the UK implementation of EN ISO8253-1:2010. It supersedes BS 6655:1986 and BS EN ISO 8253-1:1998, which are withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee EH/1/1, Hearing.A list of organizations represented on this committee can beobtai
3、ned on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011 ISBN 978 0 580 64527 3 ICS 13.140 Compliance with a British Standard cannot confer immunity fromlegal obligations.This Br
4、itish Standard was published under the authority of theStandards Policy and Strategy Committee on 31 January 2011. Amendments issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8253-1 November 2010 ICS 13.140 Supersedes EN 26189:1991, EN ISO
5、8253-1:1998English Version Acoustics - Audiometric test methods - Part 1: Pure-tone air and bone conduction audiometry (ISO 8253-1:2010) Acoustique - Mthodes dessais audiomtriques - Partie 1: Audiomtrie sons purs en conduction arienne et en conduction osseuse (ISO 8253-1:2010) Akustik - Audiometrisc
6、he Prfverfahren - Teil 1: Grundlegende Verfahren der Luft- und Knochenleitungs-Schwellenaudiometrie mit reinen Tnen (ISO 8253-1:2010)This European Standard was approved by CEN on 25 September 2010. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditio
7、ns for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in
8、 three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standard
9、s bodies of Austria, Belgium, Bulgaria, Croatia, 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 Unit
10、ed Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 8253-1:2
11、010: EBS EN ISO 8253-1:2010EN ISO 8253-1:2010 (E) 3 Foreword This document (EN ISO 8253-1:2010) 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 give
12、n the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2011, and conflicting national standards shall be withdrawn at the latest by May 2011. Attention is drawn to the possibility that some of the elements of this document may be the s
13、ubject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 26189:1991 and EN ISO 8253-1:1998. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries a
14、re bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, S
15、pain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 8253-1:2010 has been approved by CEN as a EN ISO 8253-1:2010 without any modification. BS EN ISO 8253-1:2010ISO 8253-1:2010(E) ISO 2010 All rights reserved iiiContents Page Foreword .v Introductionvi 1 Scope1 2 Norm
16、ative references1 3 Terms and definitions .2 4 General aspects of audiometric measurements 4 4.1 General .4 4.2 Standard reference zero for the calibration of audiometric equipment 5 4.3 Requirements on audiometric equipment 5 4.4 Qualified tester 5 4.5 Test time.5 4.6 Conditions for audiometric tes
17、t environments 5 4.7 Measurement uncertainty.6 5 Preparation and instruction of test subjects before audiometric testing and positioning of transducers 6 5.1 Preparation of test subjects .6 5.2 Instruction of test subjects.7 5.3 Placement of transducers 7 6 Air conduction hearing threshold level det
18、erminations using fixed-frequency audiometry 7 6.1 General .7 6.2 Manually controlled threshold determination 8 6.3 Hearing threshold determination with an automatic recording audiometer.10 6.4 Computer-controlled threshold determination.12 7 Air conduction hearing threshold level determinations usi
19、ng sweep-frequency audiometry .12 7.1 General .12 7.2 Presentation of test tone 12 7.3 Familiarization .12 7.4 Hearing threshold level measurement 12 7.5 Calculation of hearing threshold level at a specified frequency12 8 Bone conduction hearing threshold audiometry .13 8.1 Method of audiometry.13 8
20、.2 Occlusion .13 8.3 Airborne sound radiation from the bone vibrator13 8.4 Vibrotactile sensation .13 8.5 Procedures for testing with masking in bone conduction audiometry .13 9 Screening audiometry.14 9.1 General .14 9.2 Procedure for the screening test .14 10 Audiograms15 11 Permissible ambient no
21、ise .16 11.1 Permissible ambient noise for threshold determinations.16 11.2 Psycho-acoustic check on ambient noise16 12 Maintenance and calibration of audiometric equipment.20 12.1 General .20 12.2 Intervals between checks .20 BS EN ISO 8253-1:2010ISO 8253-1:2010(E) iv ISO 2010 All rights reserved12
22、.3 Stage A Routine checking and subjective tests . 20 12.4 Stage B Periodic objective checks. 21 12.5 Stage C Basic calibration tests. 22 Annex A (informative) Measurement uncertainty . 23 Bibliography. 28 BS EN ISO 8253-1:2010ISO 8253-1:2010(E) ISO 2010 All rights reserved vForeword ISO (the Intern
23、ational 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 b
24、een 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 sta
25、ndardization. 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 f
26、or 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 a
27、ll such patent rights. ISO 8253-1 was prepared by Technical Committee ISO/TC 43, Acoustics. This second edition cancels and replaces the first edition (ISO 8253-1:1989) and ISO 6189:1983, which have been technically revised. ISO 8253 consists of the following parts, under the general title Acoustics
28、 Audiometric test methods: Part 1: Pure-tone air and bone conduction audiometry Part 2: Sound field audiometry with pure-tone and narrow-band test signals Part 3: Speech audiometry BS EN ISO 8253-1:2010ISO 8253-1:2010(E) vi ISO 2010 All rights reservedIntroduction This International Standard specifi
29、es requirements and procedures for carrying out basic audiometric tests in which pure tones are presented to the test subject using earphones or bone vibrators. Electrophysiological test methods are not included. In order to obtain a reliable measure of hearing ability, many factors are involved. IE
30、C 60645-1 specifies requirements for audiometers. It is essential that audiometric equipment, when in service, be checked and the calibration maintained. This part of ISO 8253 outlines a calibration scheme. To avoid masking of the test signal by ambient noise in the audiometric test room, the levels
31、 of the ambient noise shall not exceed certain values, depending upon the method of signal presentation to the test subject, i.e. by different earphones or by bone vibrator. This part of ISO 8253 gives maximum permissible ambient sound pressure levels which shall not be exceeded when hearing thresho
32、ld levels down to 0 dB have to be measured. It indicates the maximum ambient sound pressure levels which are permissible when other minimum hearing threshold levels require measurement. It sets out procedures for determining hearing threshold levels by pure-tone air conduction and bone conduction au
33、diometry. For screening purposes, only methods for air conduction audiometry are outlined. Audiometry can be performed by using: a) a manual audiometer; b) an automatic recording audiometer; c) computer-controlled audiometric equipment. Methods for threshold audiometry are given for these three type
34、s of signal presentation. For screening purposes, only methods using a manual or a computer-controlled audiometer are set out. The procedures are applicable to the majority of adults and children. Other procedures may yield results equivalent to those derived by the procedures specified in this part
35、 of ISO 8253. For very young, aged or sick people, some modification of the recommended procedures is likely to be required. This may result in a less accurate measurement of hearing. BS EN ISO 8253-1:2010INTERNATIONAL STANDARD ISO 8253-1:2010(E) ISO 2010 All rights reserved 1Acoustics Audiometric t
36、est methods Part 1: Pure-tone air and bone conduction audiometry 1 Scope This part of ISO 8253 specifies procedures and requirements for pure-tone air conduction and bone conduction threshold audiometry. For screening purposes, only pure-tone air conduction audiometric test methods are specified. It
37、 is possible that the procedures are not appropriate for special populations, e.g. very young children. This part of ISO 8253 does not cover audiometric procedures to be carried out at levels above the hearing threshold levels of the subjects. Procedures and requirements for speech audiometry, elect
38、rophysiological audiometry, and where loudspeakers are used as a sound source are not specified. 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
39、edition of the referenced document (including any amendments) applies. ISO 389-1, Acoustics Reference zero for the calibration of audiometric equipment Part 1: Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones ISO 389-2, Acoustics Reference zero for the ca
40、libration of audiometric equipment Part 2: Reference equivalent threshold sound pressure levels for pure tones and insert earphones ISO 389-3:1994, Acoustics Reference zero for the calibration of audiometric equipment Part 3: Reference equivalent threshold force levels for pure tones and bone vibrat
41、ors ISO 389-5, Acoustics Reference zero for the calibration of audiometric equipment Part 5: Reference equivalent threshold sound pressure levels for pure tones in the frequency range 8 kHz to 16 kHz ISO 389-8, Acoustics Reference zero for the calibration of audiometric equipment Part 8: Reference e
42、quivalent threshold sound pressure levels for pure tones and circumaural earphones IEC 60645-1:2001, Electroacoustics Audiological equipment Part 1: Pure-tone audiometers IEC 61260, Electroacoustics Octave-band and fractional-octave-band filters IEC 61672-1, Electroacoustics Sound level meters Part
43、1: Specifications ISO/IEC Guide 98-3, Uncertainty of measurement Part 3: Guide to the expression of uncertainty in measurement (GUM:1995) BS EN ISO 8253-1:2010ISO 8253-1:2010(E) 2 ISO 2010 All rights reserved3 Terms and definitions For the purposes of this part of ISO 8253, the following definitions
44、 apply. 3.1 air conduction transmission of sound through the external and middle ear to the inner ear 3.2 ear simulator device for measuring the acoustic output of sound sources where the sound pressure is measured by a calibrated microphone coupled to the source so that the overall acoustic impedan
45、ce of the device approximates that of the normal human ear at a given location and in a given frequency band NOTE An ear simulator is specified in IEC 60318-14and IEC 60318-46. 3.3 acoustic coupler device for measuring the acoustic output of sound sources where the sound pressure is measured by a ca
46、librated microphone coupled to the source by a cavity of predetermined shape and volume which does not necessarily approximate the acoustic impedance of the normal human ear NOTE An acoustic coupler is specified in IEC 60318-35and IEC 60318-57. 3.4 bone conduction transmission of sound to the inner
47、ear primarily by means of mechanical vibration of the cranial bones 3.5 bone vibrator electromechanical transducer intended to produce the sensation of hearing by vibrating the cranial bones 3.6 mechanical coupler device designed to present a specified mechanical impedance to a vibrator applied with
48、 a specified static force and equipped with a mechano-electrical transducer to measure the vibratory force level at the surface of contact between vibrator and mechanical coupler NOTE A mechanical coupler is specified in IEC 60318-68. 3.7 otologically normal person person in a normal state of health
49、 who is free from all signs and symptoms of ear disease and from obstructing wax in the ear canal and who has no history of undue exposure to noise, exposure to potentially ototoxic drugs, or familial hearing loss 3.8 hearing threshold lowest sound pressure level or vibratory force level at which, under specified conditions, a person gives a predetermined percentage of correct detection responses on repeated trials 3.9 equivalent threshold sound pressure level for a given ear, at a specif
