TY - JOUR AU - Babel, Molly AU - Lawler, Zoe AU - Norton, Carolyn PY - 2016/08/24 Y2 - 2024/03/28 TI - Perceptual Learning of speech sounds: A bias for 'sipper' over 'zipper'? JF - Canadian Acoustics JA - Canadian Acoustics VL - 44 IS - 3 SE - Proceedings of the Acoustics Week in Canada DO - UR - https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2913 SP - AB - <p>Please refer to 'supplementary file' for official abstract.</p><p> </p><span id="docs-internal-guid-f7412262-3b1c-8ce4-9499-ab8db60c2283"><p dir="ltr"><span>Despite huge variability in the incoming acoustical information, listeners efficiently map speech sounds into appropriate categories. Perceptual learning has been proposed as a cognitive mechanism that can account for this acoustic variation by updating a listener’s existing phonetic categories using clues from the lexical context (Norris, McQueen &amp; Cutler, 2003). Perceptual learning of speech is especially relevant in multicultural contexts, including urban centers across Canada. Listeners are exposed to accented speech and novel pronunciations of different interlocutors in their day-to-day lives, and must accommodate these productions in order to successfully communicate.</span></p><span>While perceptual learning may assist in the processing of dialect and accent differences (Kraljic, Brennan &amp; Samuel, 2008; Crista et al., 2012) and non-canonical speech (Kraljic, Brennan &amp; Samuel, 2008b) across the lifespan (White &amp; Aslin, 2011; Trude et al., 2013; Witteman et al., 2013), little is known about whether some pronunciations are easier to perceptually learn than others. The present study investigates whether a bias for perceptually learning typologically more prevalent devoiced fricatives over voiced fricatives exists by exposing listeners to sentence stimuli with sentence-final voiceless [s] and voiced [z] items (e.g. ‘He couldn't handle any more dinner, but there might be room for </span><span>dessert</span><span>’). A lexical decision task follows the exposure phase, measuring participants recalibration of [z] and [s]. Stimuli were produced naturally by one speaker, without synthesizing the placement of the critical fricatives [z] or [s] (see Weatherholtz, 2015). We predict listeners will learn the typologically more common devoicing pattern better than the voicing pattern (e.g. [ ] will be learned better than [  ]). This project contributes to our understanding of which attributes of the speech signal facilitate perceptual learning.</span></span><p> </p> ER -