Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Narrowband Audio(also: NB Audio, Standard Definition Voice)
- Audio transmission limited to the frequency range of approximately 300-3,400 Hz, which has historically been the standard for telephone networks (PSTN). While sufficient for basic speech intelligibility, narrowband audio excludes higher frequency consonant sounds that aid speech…
- Non-diegetic Sound(also: Non-diegetic Audio, Extradiegetic Sound)
- Sound in film, television, or games that does not originate from any source within the story world and cannot be heard by the characters - for example, orchestral score, voice-over narration, or added accessibility cues. This contrasts with diegetic sound, which exists in the…
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