Foreword

Foreword

Introduction

1Scope

2Normative references

3Terms and definitions

4Framework for the visual presentation of audio information

4.1Purpose

4.2Motivation

4.3Locations of presentations

4.4Modes of presentations

4.5Modes of access

4.6Modes of display

4.7Levels of importance

4.7.1General

4.7.2Essential information

4.7.3Significant information

4.7.4Helpful information

4.7.5Unhelpful information

5Applicability of requirements and recommendations

5.1Predictable audio contents

5.2Unpredictable audio contents

6Production of visual presentations of audio information

6.1Consideration to match the intended meaning

6.2Ease of understanding of visual presentations of audio information

6.3Consideration of output devices

6.4Verification of visual presentations of audio information with the intended output devices

6.5Connecting visual presentations of audio information data with content data

6.6Combining multiple visual presentations of audio information

6.7Update of visual presentations of audio information data

6.8Evaluation

6.9Evaluations including contribution of typical users

7Visual design

7.1General

7.2Personalization

7.3Engagement

7.4Synchronization of presentations

7.5Avoidance of information obstruction

7.6Font size

7.7Font type

7.8Font face

7.9Upper, lower, and mixed case letters

7.10Contrast and use of colour

7.11Speed

7.12Number of lines

7.13Spacing between characters and lines (kerning and leading)

7.14Correct punctuation

7.15Spacing between words and phrases

7.16Transitions between presentations

7.17Sentence segmentation

7.18Indication of sentence breaks over multiple visual presentations

7.19Additional duration for location change

7.20Modes of display

8Visual alternative container (VAC)

8.1General

8.2VAC position and area

9Describing speech

9.1Describing verbal content

9.2Grammar

9.3Vulgar verbal content and slang

9.4Language variation

9.5Foreign accents

9.6Indiscernible audio content

9.7Spelling

9.8Abbreviations

9.9Homophones, homonyms, homographs, heteronyms, and heterographs

9.10Long speech

9.11Describing multiple simultaneous information

9.12Confirmation by content producers when producing visual presentations of speech

9.13Sources of information

10Non-speech information (NSI)

10.1General

10.2Describing NSI

10.3Correct description of NSI

10.4Well-known sound descriptions

10.5Onomatopoeia

10.6Sound effects in speech

10.7Censored language

10.8Paralinguistic sound effects

10.9Discrete and sustained sound effects

10.10Confirmation by content producers when producing visual presentations of NSI

10.11Sources of information

11Music

11.1General

11.2Describing presence of music

11.3Describing the reason or purpose for the music

11.4Provide information that identifies the music

11.5Clarification of music descriptions

11.6Presentation of lyrics

11.7Distinction of lyrics from speech

11.8Confirmation by content producers when producing visual presentations of music

11.9Sources of lyrics

12Emotions

12.1General

12.2Describing intended emotional nuance

12.3Describing the reason or purpose for the emotional nuance

12.4Confirmation by content producers when producing visual presentations of audio information of emotions

13Silence

13.1General

13.2Describing intentional silence

13.3Describing prolonged silence

13.4Describing the reason or purpose for the silence

14Identifying speakers

14.1General

14.2Means of identifying speakers

14.3Identifying speakers by word

14.4Identifying speakers by pictogram

14.5Identifying speakers by colour

14.6Identifying speakers by position

14.7Identifying change of speakers by changing position

14.8Multiple visual presentations of audio information

15Evaluating quality of visual presentations of audio information

15.1General

15.2Quality review process

Annex AEvaluation index and references of guidelines and reports for accessibility (informative)

Bibliography