This document provides guidance for the auditory presentation of information controlled by software, irrespective of the device. It includes specific properties such as the syntactic or semantic aspects of information, e.g. coding techniques, and gives provisions for the organization of information taking account of human perception and memory capabilities. This document does not address the hardware issues of the transmission and the production of auditory information. NOTE 1 Volume is dependent on hardware and thus cannot always be absolutely controlled by software. Environmental conditions can also affect the ability for sounds to be perceived, which can be beyond the ability of the software to take into account. This document does not apply to auditory alarms, warnings or other safety-related uses of auditory information. NOTE 2 Safety-related uses of auditory presentation of information are covered in various domain specific standards, such as ISO 7731:2003 which deals with auditory danger signals for public and work areas, and IEC 60601-1-8:2006 which provides very specific requirements for auditory alarms for medical devices. While this document applies to the presentation of all non-safety-related information, it does not include application domain specific guidance (e.g., audio instructions for consumer products). This document can be utilized throughout the design process (e.g. as specification and guidance for designers during design or as a basis for heuristic evaluation). Its provisions for the presentation of information depend on the auditory design approach, the task, the user, the environment and the single or multiple technologies that can be used for presenting the information. Consequently, this document cannot be applied without knowledge of the context of use. It is not intended to be used as a prescriptive set of rules to be applied in its entirety but rather assumes that the designer has proper information available concerning task and user requirements and understands the use of available technology. This document does not address visual or tactile/haptic presentation of information or modality shifting for the presentation of auditory information in other modalities. NOTE 3 ISO 9241-112 provides high-level ergonomic guidance that applies to all modalities.

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PDF Pages	PDF Title
2	undefined
4	European foreword Endorsement notice
8	Foreword
9	Introduction
11	1 Scope 2 Normative references 3 Terms and definitions
13	4 Application 4.1 Accessibility
14	4.2 Applying the recommendations in this document 5 Appropriate usage 5.1 Visual system unavailability 5.2 Inadequate or excessive light 5.3 Inability to maintain visual attention 5.4 Message brevity and simplicity
15	5.5 Event-based messages 5.6 Messages requiring immediate action 5.7 Messages requiring verbal response 5.8 Permanence of message relevance 5.9 Attention capture 5.10 Muting sound 6 Auditory presentation 6.1 General 6.1.1 Auditory channel overload 6.1.2 Information conciseness 6.1.3 Avoid extreme dimensions
16	6.1.4 Monaural option 6.1.5 Ease of learning 6.1.6 Signal invariance 6.1.7 Signal similarity 6.1.8 Two-stage signal usage 6.1.9 Logical sequencing 6.1.10 Supporting short term memory
17	6.1.11 Cross-cultural sounds 6.1.12 Representative sounds 6.1.13 Representative sound usage 6.2 Detectability in noisy environments 6.2.1 Signal distinctiveness 6.2.2 Change signal frequency 6.2.3 Signal duration in noisy environments 7 Auditory dimensions 7.1 Frequency 7.1.1 Absolute pitch identification 7.1.2 Temporal proximity for pitch comparison 7.1.3 Similarity for pitch comparison
18	7.1.4 Minimum difference for pitch comparison 7.1.5 Frequency range for pitch identification 7.1.6 Frequency range for most accurate pitch discrimination 7.1.7 Harmonicity for pitch identification 7.1.8 Harmonic tones for pitch discrimination tasks 7.1.9 Long-distance sound 7.1.10 Obstructed sound 7.2 Intensity 7.2.1 Avoid distortion 7.2.2 Separate signal control
19	7.2.3 Loudness cues about the environment 7.2.4 Minimal signal intensity 7.2.5 Signal intensity for rapid response 7.2.6 Relative maximal signal intensity 7.2.7 Absolute maximal signal loudness 7.3 Timbre 7.3.1 Timbre discrimination 7.3.2 Musical instrument timbres 7.4 Localization 7.4.1 Guidance related to lateral sound localization
20	7.4.2 Minimum angle for position discrimination 7.4.3 Frequency selection for sound localization 7.4.4 Minimum distance for front/back position identification 7.4.5 Guidance related to distance judgment 7.4.6 Doppler effect 7.4.7 Guidance related to elevation angle judgment
21	7.5 Duration 7.5.1 Minimum signal duration 7.5.2 Adjustable signal duration 7.6 Rhythm and accent usage 7.7 Timing 7.7.1 Event-based sounds 7.7.2 Sounds to guide rhythmic movements 7.7.3 Concurrent auditory streams 8 Speech 8.1 Appropriate usage 8.1.1 Complex messages 8.1.2 Source identification
22	8.1.3 Untrained users 8.1.4 Stressful context of use 8.1.5 Rapid information exchange 8.2 General speech presentation 8.2.1 Eliminate non-relevant speech 8.2.2 Audio volume consistency 8.2.3 Monophonic speech presentation 8.2.4 Present messages serially 8.2.5 Information brevity 8.2.6 Message replay 8.2.7 Option phrase sequencing
23	8.2.8 Grouping information 8.3 Language 8.3.1 Language and dialect control 8.3.2 Avoid dialect-specific expressions 8.3.3 Vocabulary used in prompts 8.3.4 Consistency of terminology use 8.3.5 Unambiguous prompts 8.3.6 Simple linguistic forms 8.3.7 Minimum syllable count 8.3.8 Sentence usage 8.4 Voice 8.4.1 Use of synthetic speech
24	8.4.2 Source voice identification 8.4.3 Dialects and accents 8.4.4 Speech output rate 8.4.5 Intonation and prosody 9 Earcons 9.1 Meaningful earcons 9.2 Sound organization 9.3 Earcon usage 9.4 Earcon construction
25	9.5 Earcon duration 9.6 Consistency across earcons 9.7 Reversing earcons 10 Coding 10.1 General 10.1.1 Meaningfulness of codes 10.1.2 Access to meaning of code 10.1.3 Rules of code construction 10.1.4 Distinctiveness of codes 10.1.5 Consistent coding 10.1.6 Coding relative values
26	10.1.7 Ordered coding 10.1.8 Change of state 10.1.9 Combination codes 10.1.10 User training in codes 10.1.11 Counting simultaneous tones 10.2 Dimension-specific coding 10.2.1 Number of frequencies for pitch coding 10.2.2 Frequency selection for pitch coding 10.2.3 Need for redundant coding when coding based on frequency
27	10.2.4 Coding based on timbre 10.2.5 Coding based on intensity 10.2.6 Number of levels for loudness coding 10.2.7 Intensity spacing for loudness coding 10.2.8 Number of levels for pitch and loudness coding 10.2.9 Coding by position and distance 10.2.10 Coding position and distance with rhythm 10.2.11 Number of levels for duration coding
28	Bibliography

Published By	Publication Date	Number of Pages
BSI	2022	32


PDF Format	Searchable	Printable	Preview Now

Status	Under Review
Pages	32
Publication Date	2022-08-03
ISBN	978 0 539 18934 6
Standard Number	PD CEN ISO/TS 9241-126:2022
Title	Ergonomics of human-system interaction – Guidance on the presentation of auditory information
Identical National Standard Of	ISO/TS 9241-126:2019, CEN ISO/TS 9241-126:2022
Corrects	PD ISO/TS 9241-126:2019
Descriptors	Speech, Speech synthesizers, Hearing (auditory perception), Auditory perception, Ergonomics
Publisher	BSI
Committee	PH/9
ICS Codes	13.180 - Ergonomics

BSI PD CEN ISO/TS 9241-126:2022

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