SPA 3123 Study Guide - Final Guide: Presbycusis, Mcgurk Effect, Fourier Analysis
3 Oct 2016
School
Department
Course
Professor
Document Summary
Weak-speech production forms the bases for speech perception. Strong-speech production offers important cues about speech perception. Template matching concept of internalized recognition patterns;required for analysis-by-synthesis, listener compares the internally synthesized speech to the incoming sound signal. has proven very useful in explaining speech perception & it relates directly to the theory of acoustic invariance. Taught to respond to naturally spoken occurrences of /t/ and /d/ by avoiding a mild shock by moving to the other half of the grill floor. Rewarded with free drinking water, found to generalize to new stimuli produced by different speakers. Synthetic stimuli were presented in an identification task. Found that the phonetic vot boundary between /t/ and /d/ was very similar for chinchillas and for adult speakers; approximately 35ms. Results essentially demonstrate categorical perception in chinchillas, previously thought to be one of the hallmarks of uniquely human speech processing. Performed by kuhl using discrimination date for the /da/-/ta/ continuum and up-down threshold tracking procedure.
