Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Pitch
- The perceived highness or lowness of a sound, determined primarily by its fundamental frequency (measured in Hertz). Pitch is one of the primary dimensions along which music and speech are organized, underpinning melody, harmony, and prosody. In accessibility work, pitch is…
- Podcast(also: Podcasting)
- An episodic, on-demand audio programme distributed over the internet, typically via RSS or proprietary platforms such as Spotify, Apple Podcasts, and BBC Sounds. Podcasts are a dominant form of long-form audio media — 92% of UK adults listen to some audio content weekly — but…
- Psychoacoustics
- The branch of perceptual psychology that studies how humans subjectively perceive sound - loudness, pitch, timbre, spatial location, foreground/background segregation, and masking. Psychoacoustic principles underpin accessible audio design: screen reader pacing, earcon and…
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