Glossary

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Algebra Earcon(also: Mathematical Earcon, Math Sound)

A non-speech auditory cue designed to represent the structural components of mathematical expressions, allowing blind users to perceive the overall shape and nesting of an expression without relying solely on sequential speech output. Algebra earcons use variations in rhythm,…

Audio CAPTCHA(also: Audio HIP, Audio Human Interaction Proof)

An auditory alternative to visual CAPTCHAs, typically presenting distorted spoken letters, numbers, or words that users must transcribe. While intended as an accessible alternative for blind users, research shows audio CAPTCHAs have success rates of only 43-50% for screen reader…

Audio Cue(also: Auditory Cue, Sound Cue, Earcon)

A non-speech sound used to convey information in an interface. In accessible programming environments, audio cues represent code structures, syntax errors, or navigation landmarks—for example, a door-opening sound for an "if" statement or distinct tones for different indentation…

Audio Cues(also: Earcons, Auditory Icons, Sound Cues)

Non-speech sounds used in software interfaces to convey information, status changes, or events that would otherwise be communicated only visually. In accessible development environments, audio cues can indicate errors, warnings, code changes, and navigation events, providing…

Audio Icon(also: Auditory Icon, Earcon)

A non-speech sound used in a user interface to represent an object, action, or event, analogous to how visual icons represent concepts graphically. Audio icons use everyday sounds that have a natural association with what they represent (e.g., a crumpling sound for deleting a…

Audio-Based Interface(also: Audio Interface, Auditory Interface)

A computer interface that uses sound as the primary means of conveying information and supporting interaction, rather than visual display. Audio-based interfaces are essential for blind and visually impaired users and may employ speech output, environmental sounds, musical…

Audio-Based Navigation(also: Audio Navigation, Auditory Navigation)

A navigation approach that uses audio output — typically synthesised speech, spatial audio cues, or sonification — as the primary means of providing wayfinding information to users. Audio-based navigation systems are particularly important for blind and visually impaired people,…

Auditory Feedback(also: Audio Feedback, Auditory Display)

The use of sound — including tones, sound effects, earcons, and speech — to convey information about system states, user actions, or environmental changes. In accessibility, auditory feedback serves as a non-visual channel for communicating information that is typically…

Auditory Menu(also: Audio Menu, Speaking Menu)

A user interface menu that conveys its content and structure through audio rather than visual display. Auditory menus typically use text-to-speech to read menu item names and may incorporate non-speech sounds such as earcons, spearcons, or tones to provide contextual information…

Auditory Scrollbar(also: Audio Scrollbar, Sonic Scrollbar)

A non-speech audio cue that conveys a user's position within a list or menu, functioning as an auditory analogue to a visual scrollbar. Auditory scrollbars use variations in pitch, tone patterns, or grouped sounds to communicate contextual information such as how many items are…

Auditory User Interface(also: AUI, Audio User Interface)

A user interface that relies primarily on audio output — including synthesised speech, earcons, auditory icons, and sonification — to convey information and enable interaction. Auditory user interfaces are essential for users who are blind or have low vision, and they can…

Aural Rendering(also: Auralization, Audio Rendering)

The process of converting visual or textual information into a spoken or auditory representation. In programming accessibility, aural rendering transforms source code into speech output that conveys not just the text content but also structural and syntactic information — such…

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