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Glossary

Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.

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Machine Translation(also: MT, Automated Translation)
Machine translation is the use of computer software to automatically translate text or speech from one language to another. In accessibility contexts, machine translation is particularly relevant to sign language accessibility, where translating written or spoken text into sign…
Mainstream Classroom(also: Inclusive Classroom, Integrated Classroom)
An educational setting where students with disabilities learn alongside their non-disabled peers, typically with support services such as interpreters, captioning, or note-takers. For deaf and hard-of-hearing students, mainstream classrooms present unique accessibility…
Mainstream Education(also: Mainstreaming, Inclusive Education, Integrated Classroom)
The practice of educating students with disabilities in general education classrooms alongside non-disabled peers, rather than in separate special education settings. Mainstreaming emerged from disability rights legislation like the U.S. Individuals with Disabilities Education…
Manual Sign(also: MS, Hand Sign)
The hand shapes, movements, and locations that form the primary visible component of sign language vocabulary. Manual signs are what most hearing people think of as "sign language," but they represent only one channel of a multi-channel visual communication system. In ASL,…
Mediated Instruction(also: Mediated Learning, Interpreted Instruction)
An educational approach where content is delivered to students through an intermediary, such as a sign language interpreter, rather than directly from the instructor. Research shows that while mediated instruction can be as effective as direct instruction when classes are…
Mel Spectrogram(also: Mel-frequency Spectrogram, Log Mel Spectrogram)
A visual representation of sound that maps audio frequencies onto the mel scale, which approximates how humans perceive pitch — compressing higher frequencies and expanding lower ones to match the non-linear sensitivity of human hearing. Mel spectrograms convert audio signals…
Music Psychotherapy
A form of music therapy that uses musical activities — songwriting, improvisation, lyric analysis, receptive listening — to address emotional, psychological, and relational concerns rather than sensory or rehabilitative goals. Practitioners are typically licensed music…
Music Visualization(also: Music visualisers, Visual music)
The representation of musical content — pitch, rhythm, timbre, dynamics, melody, lyrics, or emotion — through visual rather than auditory channels. Visualizations range from abstract mappings of audio features (spectrograms, particle systems, pulsing geometry, lyric typography)…

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