PSY 303 Lecture Notes - Lecture 13: Voice-Onset Time, Habituation, Speech Perception
Document Summary
How are /p/ and /b/ perceived differently. Create continuum of sounds which are identical except for the voice onset time (vot) in small equal changes. Can have 10, 20 30, etc changes in voice onset time. Have mental categories for phonemes (/b/, /p/) Each charge in length is equally noticeable. Equally sized changes in stimulus (wavelength) have unequal changes in perception know as categorical perception. 480 to 500 big change in perceived color. Short vot = perceived as /b/: long vot = /p/ But equal sized changes in stimulus vot. Abrupt changes from perceived b to p. We identify sounds as b or p as if theres a sharp boundary between them. Q: can we detect differences between sound on the same side of the boundary. Easy to distinguish sounds in different categories b and p (10 vs 70 so is 30 vs 50) Difficult to distinguish sounds within same category b and p (10 vs 30)
