1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 24501:2010Ergonomics Accessibledesign Sound pressurelevels of auditory signalsfor consumer products (ISO24501:2010)BS EN ISO 24501:2010 BRITISH STANDARDNational forewor
2、dThis British Standard is the UK implementation of EN ISO24501:2010.The UK participation in its preparation was entrusted to TechnicalCommittee PH/9/1, Ergonomics of the physical environment.A list of organizations represented on this committee can beobtained on request to its secretary.This publica
3、tion does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 68946 8ICS 11.180.15; 13.180Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under t
4、he authority of theStandards Policy and Strategy Committee on 31 January 2011.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 24501 December 2010 ICS 13.180; 11.180.15 English Version Ergonomics - Accessible design - Sound pressure levels
5、 of auditory signals for consumer products (ISO 24501:2010) Ergonomie - Conception accessible - Niveaux de pression acoustique des signaux auditifs pour produits de consommation courante (ISO 24501:2010) Ergonomie - Zugngliche Gestaltung - Schalldruckpegel von akustischen Signalen fr Konsumgter (ISO
6、 24501:2010) This European Standard was approved by CEN on 14 December 2010. 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 bibli
7、ographical 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 three official versions (English, French, German). A version in any other language made by translation under the respons
8、ibility 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 standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Gree
9、ce, 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 Manageme
10、nt 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 24501:2010: EBS EN ISO 24501:2010EN ISO 24501:2010 (E) 3 Foreword This document (EN ISO 24501:2010) has been prepared by Technica
11、l Committee ISO/TC 159 “Ergonomics” in collaboration with Technical Committee CEN/TC 122 “Ergonomics” the secretariat of which is held by DIN. 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 June
12、2011, and conflicting national standards shall be withdrawn at the latest by June 2011. 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
13、. 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, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Irela
14、nd, 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 24501:2010 has been approved by CEN as a EN ISO 24501:2010 without any modification. BS EN ISO 24
15、501:2010ISO 24501:2010(E) ISO 2010 All rights reserved iiiContents Page Foreword iv Introduction.v 1 Scope1 2 Normative references1 3 Terms and definitions .1 4 Symbols2 5 Range of sound pressure levels of auditory signals.2 5.1 General .2 5.2 When not considering the masking effect of an interferin
16、g sound .3 5.2.1 General .3 5.2.2 Method using octave-band analysis or one-third-octave-band analysis 3 5.3 When taking the masking effect of interfering sound into consideration.4 5.3.1 Method using A-weighted sound pressure level measurement.4 5.3.2 Method using octave-band analysis5 5.3.3 Method
17、using one-third-octave-band analysis.5 Annex A (normative) Method for measuring the sound pressure level of an auditory signal7 Annex B (normative) Method for measuring the sound pressure level of interfering sound.11 Annex C (informative) Example of the record of measurement conditions and results
18、.14 Annex D (informative) Examples of measurement and range setting of the sound pressure level of auditory signals.16 Bibliography21 BS EN ISO 24501:2010ISO 24501:2010(E) iv ISO 2010 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of na
19、tional 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. Intern
20、ational 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
21、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
22、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 24501 was prepared by Technical Committee ISO/
23、TC 159, Ergonomics, Subcommittee SC 5, Ergonomics of the physical environment. BS EN ISO 24501:2010ISO 24501:2010(E) ISO 2010 All rights reserved vIntroduction People conduct their daily lives surrounded by various consumer products. Consumer products, as defined in ISO 20282-1, include home electri
24、cal appliances, information and telecommunication products, gas-heating equipment, toys, sanitary equipment, and health-care products, many of which use auditory signals. These auditory signals can be indistinct because of the hearing loss which occurs with ageing or because of interfering sounds in
25、 the surroundings. Also, with age, our visual ability declines gradually. Auditory signals with an appropriate sound level can assist product users with auditory or visual impairment in using the product correctly and safely. This International Standard specifies methods for determining an appropria
26、te sound level range of auditory signals, so that all product users, including people with age-related hearing loss, can hear them properly against interfering sounds. This sound level range specification was determined, based on results of experiments in which people of all ages participated. Audit
27、ory signals whose sound pressure level is in that range are expected to be audible and comfortably loud for most users in the presence of interfering sounds. This International Standard should be applied as appropriate to products, depending on the product type and its conditions of use. It does not
28、 apply to machines and equipment used for professional work. This International Standard adopts the principles of accessible design given in ISO/IEC Guide 71 and amplified in ISO/TR 22411. BS EN ISO 24501:2010BS EN ISO 24501:2010INTERNATIONAL STANDARD ISO 24501:2010(E) ISO 2010 All rights reserved 1
29、Ergonomics Accessible design Sound pressure levels of auditory signals for consumer products 1 Scope This International Standard specifies methods for determining the sound pressure level range of auditory signals so that the users of consumer products, including people with age-related hearing loss
30、, can hear the signal properly in the presence of interfering sounds. Auditory signals, in this International Standard, refer to sounds with a fixed frequency (also called beep sounds) and do not include variable frequency sounds, melodic sounds, or voice guides. This International Standard is appli
31、cable to auditory signals which are heard at an approximate maximum distance of 4 m from the product, as long as no physical barrier exists between the product and the user. It is not applicable to auditory signals heard through a head receiver or earphones, or to those heard with the ear located ve
32、ry near to the sound source because of the interference of the head with sound propagation. This International Standard does not specify the sound pressure level of auditory signals regulated by other statutes, such as those for fire alarms, gas leakages and crime prevention, nor does it specify aud
33、itory signals particular to a communication tool such as telephones. This International Standard does not specify auditory danger signals for public or work areas which are covered in ISO 7731, ISO 8201, and ISO 11429. 2 Normative references The following referenced standards are indispensable for t
34、he application of this document. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 24500:2010, Ergonomics Accessible design Auditory signals for consumer products IEC 60050-801, International electrotechnical vocabulary Chapter 801: Acousti
35、cs and electroacoustics IEC 61260, Electroacoustics Octave-band and fractional-octave-band filters IEC 61672-1, Electroacoustics Sound level meters Part 1: Specifications 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 24500 and IEC 60050-801 and the
36、 following apply. 3.1 product actuation sound sound generated by actuation of the consumer product which incorporates the auditory signal to be designed EXAMPLE A cooling-fan noise. BS EN ISO 24501:2010ISO 24501:2010(E) 2 ISO 2010 All rights reserved3.2 living environment sound sound generated in th
37、e room where the consumer product which incorporates the auditory signal to be designed is used NOTE This includes a sound generated by user behaviour (e.g. sound of water generated when washing dishes in a kitchen) or an actuation sound of some other product incorporating the auditory signal to be
38、designed (e.g. actuation sound of a vacuum cleaner). 3.3 interfering sound product actuation sound or living environment sound which is likely to have the greatest effect on audibility of the auditory signal to be designed 3.4 ambient noise sound other than the sound to be measured as an auditory si
39、gnal or as an interfering sound at the measurement location EXAMPLE Outside traffic noise. 4 Symbols For the purposes of this document, the following symbols apply. LS,AA-weighted sound pressure level of an auditory signal, in decibels, measured using the method specified in Annex A. LN,AA-weighted
40、sound pressure level of interfering sound, in decibels, measured using the method specified in Annex B. LS,octlevel of the frequency band, in decibels, which has the maximum value among octave-band sound pressure levels of auditory signals, measured using the method specified in Annex A. LN,octoctav
41、e-band sound pressure level, in decibels, of interfering sound at the same frequency band as LS,oct, measured using the method specified in Annex B. LS,1/3octlevel of the frequency band, in decibels, which has the maximum value among one-third-octave-band sound pressure levels of auditory signals, m
42、easured using the method specified in Annex A. LN,1/3octone-third-octave-band sound pressure level, in decibels, of interfering sound at the same frequency band as LS,1/3oct, measured using the method specified in Annex B. 5 Range of sound pressure levels of auditory signals 5.1 General The range of
43、 sound pressure levels of auditory signals shall be determined following the procedure in 5.2 or 5.3, depending on whether the masking effect of interfering sound is taken into consideration or not. When an auditory signal with a fixed sound level is used, the level shall be selected to fall in the
44、range specified by application of the method. When the sound level is controllable by the user, the level shall be variable to cover the entire range. NOTE It is important for designers to consider the implication of adjustable volume controls with respect to caution signals, if the adjustable range
45、 extends below the lower end specified by application of the method. An example of the record of measurement conditions and results is shown in Annex C. Some examples of measurement and range setting of the sound pressure level of auditory signals are shown in Annex D. BS EN ISO 24501:2010ISO 24501:
46、2010(E) ISO 2010 All rights reserved 35.2 When not considering the masking effect of an interfering sound 5.2.1 General For a case in which the masking effect of interfering sound can be ignored because its level is very low, only the users hearing-ability change which occurs with ageing is consider
47、ed for setting the range of the sound pressure level of the auditory signal. The range of the sound pressure level shall be determined in accordance with either method using octave-band analysis or one-third-octave-band analysis, both of which are described in 5.2.2. For the methods for measuring th
48、e sound pressure level using octave-band analysis and one-third-octave-band analysis, see Annex A. NOTE The method using one-third-octave-band analysis provides a more accurate range of sound pressure levels because the auditory signal is analysed more precisely with a narrower frequency bandwidth.
49、5.2.2 Method using octave-band analysis or one-third-octave-band analysis The range of the sound pressure level of the auditory signal determined using octave-band analysis or one-third-octave-band analysis shall be as described below. a) Lower end of LS,octor LS,1/3octThe lower end of LS,octor LS,1/3octshall be determined as follows. 1) The lower end of LS,octand LS,1/3octshall be as given in Tables 1 and 2, respectively. Table 1 Lower end of LS,octCentre frequency of band Hz 250 500 1 000 2 000 4 000bSound pressure level dB 30 a25
