ISO 19029-2016 Accessible design - Auditory guiding signals in public facilities《无障碍设计 公共设施中的听觉引导信号》.pdf

1、 ISO 2016 Accessible design Auditory guiding signals in public facilities Produits assistive pour des personnes avec lincapacit Conception accessible Signaux de guidage auditifs dans les quipements publics INTERNATIONAL STANDARD ISO 19029 First edition 2016-02-01 Reference number ISO 19029:2016(E) I

2、SO 19029:2016(E)ii ISO 2016 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2016, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photoc

3、opying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22

4、749 01 11 Fax +41 22 749 09 47 copyrightiso.org www.iso.org ISO 19029:2016(E)Foreword iv Introduction v 1 Scope . 1 2 T erms and definitions . 1 3 Requirements and recommendations 2 3.1 Sound characteristics 2 3.1.1 Envelope 2 3.1.2 Frequency component 2 3.2 Equipment . 3 3.2.1 Sound signal generato

5、r . 3 3.2.2 Loudspeaker 4 3.2.3 Arrangement of loudspeakers 4 3.3 Ambient sound environment 5 3.3.1 Signal-to-noise ratio 5 3.3.2 Auditory guiding signals for different goals . 5 3.3.3 Sound reflection and reverberation 5 3.3.4 Operation of auditory guiding signals . 5 Bibliography 6 ISO 2016 All ri

6、ghts reserved iii Contents Page ISO 19029:2016(E) Foreword 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

7、 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 Internationa

8、l Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different

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12、 the following URL: Foreword - Supplementary information. The committee responsible for this document is ISO/TC 173, Assistive products for persons with disability, Subcommittee SC 7, Accessible design.iv ISO 2016 All rights reserved ISO 19029:2016(E) Introduction When the persons with seeing impair

13、ment and blindness walk and travel independently, the auditory guiding signals in public facilities for mobility assistance are very beneficial for them to know the location (i.e. direction and distance). This International Standard provides the guidelines of sound characteristics and specifications

14、 of sound equipment of the auditory guiding signals in public facilities for mobility assistance of mainly the persons with seeing impairment and blindness. The provided sound characteristics and specifications of sound equipment enable the user to detect the sound location correctly even in the noi

15、sy environment. This International Standard is useful for the sound designers who design the auditory guiding signals in public facilities, and the designers who plan the public facilities. ISO 2016 All rights reserved v Accessible design Auditory guiding signals in public facilities 1 Scope This In

16、ternational Standard specifies the sound characteristics of auditory guiding signals for persons with seeing impairment and blindness to provide the location and direction information of particular public facilities. The public facilities include facilities such as railway stations, airports, ports,

17、 bus terminals, government offices, libraries, community centres, parks, schools, hospitals, theatres, large supermarkets, and its toilets, stairs, etc. EXAMPLE As an auditory guiding signal, a chime sound is emitted from the ticket gate of a railway station. Pedestrians, including persons with seei

18、ng impairment and blindness, are able to know the location of the ticket gate by detecting the location of the chime sound. NOTE 1 The auditory guiding signals are also helpful for sighted persons. This International Standard also specifies the design or usage of the equipment that provides auditory

19、 guiding signals. This International Standard does not specify the characteristics of the alerts, such as alarm sounds or emergency signals. NOTE 2 The auditory danger signals are covered by ISO 7731. This International Standard does not specify the characteristics of auditory guiding signals coming

20、 from the personal mobile equipment that is worn by persons with seeing impairment and blindness. 2 T erms a nd definiti ons For the purposes of this document, the following terms and definitions apply. 2.1 auditory guiding signal sound signal that provides the location and direction information of

21、particular public facilities 2.2 harmonic tone sound that consists of the fundamental frequency component and its multiple frequency components EXAMPLE Sounds that have a periodical waveform such as musical tone, triangle wave sound, rectangle wave sound, and saw-teeth wave sound. 2.3 sound signal g

22、enerator equipment that generates the electric analogue signal to be provided to the loudspeaker 2.4 goal point that auditory guiding signal (2.1) intends to guide EXAMPLE Entrance of the facility, ticket gate of the railway station, restroom, beginning point of stairs, etc. 2.5 emission angle angle

23、 in where sound attenuation is less than 10 dB from that of emission axis INTERNATIONAL ST ANDARD ISO 19029:2016(E) ISO 2016 All rights reserved 1 ISO 19029:2016(E) 3 Requirements and recommendations 3.1 Sound characteristics 3.1.1 Envelope The duration of attack part of auditory guiding signals sha

24、ll be longer than 0 ms and shall not be longer than 5 ms. NOTE 1 The attack part that is not longer than 5 ms enables the listener to detect the direction of sound easily. NOTE 2 The decay part does not have an influence upon the sound localization. The interval between auditory guiding signals shou

25、ld be no longer than 2 s. 1 Y X Key 1 signal 2 attack 3 decay 4 interval X time Y amplitude Figure 1 Envelope of signal 3.1.2 Frequency component The lowest frequency component shall not be higher than 1 kHz. NOTE 1 If the sound is harmonic tone, the lowest frequency is equal to the fundamental freq

26、uency. The highest frequency component shall not be lower than 8 kHz. NOTE 2 The highest frequency component that is not lower than 8 kHz enables listener to detect the direction of sound easily. If the sound is harmonic tone, it should have all order of harmonics in its frequency band. The sound th

27、at has only one frequency component shall not be used as auditory guiding signals. NOTE 3 If the sound has narrow or poor frequency components, it does not satisfy the requirements. EXAMPLE 1 A sow-teeth wave sound has all harmonics in its frequency band.2 ISO 2016 All rights reserved ISO 19029:2016

28、(E) If the sound is not harmonic tone, it should have frequency components as many as possible in its frequency band, and it should have the spectrum that the user can distinguish it from ambient noise. EXAMPLE 2 The non-harmonic sound for auditory guiding signals include combination of harmonic ton

29、es, impulse sound, etc. 1 2 3 4 1 2 a) Harmonic tone X Y Y X Key 1 lowest frequency component 2 highest frequency component 3 harmonics 4 frequency band width X frequency Y power Figure 2 Frequency components 3.2 Equipment 3.2.1 Sound signal generator The sound signal generator shall be able to gene

30、rate the auditory guiding signal that have the frequency component provided in 3.1.2. If the auditory guiding signal is recorded, reproduced, and/or transferred digitally, the sampling resolution shall not be less than eight bits, and should not be less than 16 bits. If the auditory guiding signal i

31、s recorded as compressed data, the compression ratio should not be so high as to degrade sound quality. ISO 2016 All rights reserved 3 ISO 19029:2016(E) 3.2.2 Loudspeaker The loudspeaker shall be able to emit the auditory guiding signal that have the frequency component provided in 3.1.2. EXAMPLE Th

32、e general full-range loudspeaker that has about 10 cm diameter and is installed in an appropriate box has nearly flat frequency characteristics in the rage of 100 Hz to 10 kHz. 3.2.3 Arrangement of loudspeakers The loudspeaker and the goal should be located on the same vertical line, with the loudsp

33、eaker facing the main stream of pedestrians. EXAMPLE 1 The loudspeaker faces the crossing point of the main stream of pedestrians and the path to the goal. EXAMPLE 2 The loudspeaker is suspended from the ceiling and is located above the goal at 3 m height from the floor. EXAMPLE 3 The loudspeaker is

34、 installed in the short vertical pole on the floor and is located on the goal at 0,8 m height from the floor. The obstacles that disturb the sound propagation shall not be on the emission axis of the loudspeaker, and should not be in the range within 3 m in the emission angle of the loudspeaker. EXA

35、MPLE 4 The obstacles that disturb the sound propagation include signboards, walls, poles, etc. a) Identical b) Not identical Key 1 loudspeaker 2 emission angle 3 emission axis 4 listening point 5 user 6 goal 7 main stream of users Figure 3 Arrangement of loudspeaker in the cases that main stream of

36、users and course of goal is identical (a) and not identical (b)4 ISO 2016 All rights reserved ISO 19029:2016(E) 3.3 Ambient sound environment 3.3.1 Signal-to-noise ratio The signal-to-noise ratio shall not be less than 10 dB at the listening point. In order to measure the signal-to-noise ratio, soun

37、d pressure level of signal and sound pressure level of ambient noise shall be measured. Maximum sound pressure level with a standard frequency weighting “A” and a standard exponential time weighting “FAST (F)” shall be used for signal. Time-average sound pressure level with a standard frequency weig

38、hting “A” should be used for ambient noise. 3.3.2 Auditory guiding signals for different goals If the auditory guiding signals for different goals can be heard at one place, they should not sound each other simultaneously to avoid overlap. 3.3.3 S ound r eflection and r e v er ber ation The sound re

39、flection and reverberation should be reduced as much as possible. NOTE 1 If the sound reflection and/or reverberation disturb the listening of auditory guiding signals, the sound absorbents can be put on the ceiling and/or wall. NOTE 2 It is desirable to design the space by taking the ambient sound

40、environment into consideration. 3.3.4 Operation of auditory guiding signals The auditory guiding signals shall work constantly. NOTE If there is the specific time range when no user is in the public facilities, the auditory guiding signals can be controlled. The loudspeaker and/or its container shou

41、ld have the appearance that indicates that it is the equipment of the auditory guiding signals for mobility assist. ISO 2016 All rights reserved 5 ISO 19029:2016(E) Bibliography 1 ISO 724016, Fire detection and alarm systems Part 16: Sound system control and indicating equipment 2 ISO 11429, Ergonom

42、ics System of auditory and visual danger and information signals 3 ISO 15006, Road vehicles Ergonomic aspects of transport information and control systems- Specifications and compliance procedures for in-vehicle auditory presentation 4 ISO/TR 16352, Road vehicles Ergonomic aspects of in-vehicle pres

43、entation for transport information and control systems-Warning system 5 ISO 110646, Ergonomic design of control centres Part 6: Environmental requirements for control centres. 6 ISO 23600, Assistive products for persons with vision impairments and persons with vision and hearing impairments Acoustic

44、 and tactile signals for pedestrian traffic lights 7 IEC 60073Ed. 6.0:2002, (b) Basic and safety principles for man-machine interface, marking and identification Coding principles for indication devices and actuators 8 IEC 602685, Sound system equipment Part 5:Loudspeakers 9 MLIT/Addendum to the “Guidelines to Improve Barrier-Free Access for Public Transport Passenger Facilities”:2002 10 Blauert J. Spatial Hearing. The MIT Press, Cambridge, revised edition, 19976 ISO 2016 All rights reserved ISO 19029:2016(E) ISO 2016 All rights reserved IC S 11.180.15; 13.180 Price based on 6 pages