Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Assistive Listening Device(also: ALD, Hearing Assistive Technology)
- Any device designed to improve audibility for a person with hearing loss, beyond or in addition to a hearing aid or cochlear implant. Common examples include personal amplifiers, FM and radio-frequency systems, infrared systems, and induction loop (hearing loop) systems…
- Audiogram(also: Hearing Test Chart, Pure-tone Audiogram)
- An audiogram is a graph of a person's hearing thresholds measured across a range of frequencies — typically 250 Hz to 8 kHz — plotted separately for each ear. Thresholds are expressed in decibels hearing level (dB HL) relative to the expected threshold of a young, healthy ear,…
- Auditory Comprehension(also: Listening Comprehension)
- The cognitive and linguistic ability to understand spoken language in real time, including recognising words, parsing grammar, holding clauses in working memory, and integrating meaning across sentences. Frequently impaired in people living with aphasia, age-related hearing…
- Auditory agnosia(also: Sound agnosia, Acoustic agnosia)
- A neurological condition characterized by difficulty recognizing or distinguishing sounds despite having intact hearing. People with auditory agnosia can hear sounds but may struggle to identify what they are—such as not recognizing a ringing phone, a doorbell, or environmental…
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