Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Pelli-Robson Chart(also: Pelli-Robson Contrast Sensitivity Chart)
- The Pelli-Robson chart is a clinical tool used to measure contrast sensitivity — the ability to detect objects at low-to-moderate contrast levels. The chart consists of a series of letter-charts composed of different contrasts, mapping a contrast-sensitivity function for the…
- Perceptual Analysis(also: Perceptual Judgment, Auditory-Perceptual Analysis)
- A method of evaluating speech, voice, or other sounds based on a human listener's subjective auditory impressions rather than instrumental measurement. In clinical speech-language pathology, perceptual analysis is used to categorize vocalizations, rate voice quality, or assess…
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