Stimulus variability and the phonetic relevance hypothesis: effects of variability in speaking style, fundamental frequency, and speaking rate on spoken word identification

The Journal of the Acoustical Society of America
Mitchell S Sommers, Joe Barcroft

Abstract

Three experiments were conducted to examine the effects of trial-to-trial variations in speaking style, fundamental frequency, and speaking rate on identification of spoken words. In addition, the experiments investigated whether any effects of stimulus variability would be modulated by phonetic confusability (i.e., lexical difficulty). In Experiment 1, trial-to-trial variations in speaking style reduced the overall identification performance compared with conditions containing no speaking-style variability. In addition, the effects of variability were greater for phonetically confusable words than for phonetically distinct words. In Experiment 2, variations in fundamental frequency were found to have no significant effects on spoken word identification and did not interact with lexical difficulty. In Experiment 3, two different methods for varying speaking rate were found to have equivalent negative effects on spoken word recognition and similar interactions with lexical difficulty. Overall, the findings are consistent with a phonetic-relevance hypothesis, in which accommodating sources of acoustic-phonetic variability that affect phonetically relevant properties of speech signals can impair spoken word identification. In cont...Continue Reading

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Citations

Sep 4, 2008·Journal of Experimental Psychology. Learning, Memory, and Cognition·Jill A WarkerSamantha Gereg
Jul 5, 2012·Journal of Speech, Language, and Hearing Research : JSLHR·Valerie HazanStuart Rosen
May 24, 2012·Attention, Perception & Psychophysics·Conor T McLennan, Julio González
Mar 5, 2013·Psychonomic Bulletin & Review·Sara Finley
Apr 27, 2012·Journal of the American Academy of Audiology·Sarah E KingMichael Strube
Mar 8, 2013·The Journal of the Acoustical Society of America·Tessa Bent, Rachael Frush Holt
Jun 23, 2015·International Journal of Audiology·Sabine HochmuthTim Jürgens
Mar 17, 2015·Attention, Perception & Psychophysics·Angela CooperAnn R Bradlow
Feb 24, 2015·The Journal of the Acoustical Society of America·Sandra Gordon-SalantJulie I Cohen
Feb 24, 2015·The Journal of the Acoustical Society of America·Lisa DavidsonColin Wilson
Jul 3, 2016·Journal of Voice : Official Journal of the Voice Foundation·Martin BergThomas Berger
May 30, 2017·Cognition·Christine E Potter, Jenny R Saffran
Nov 30, 2016·Memory & Cognition·Shiri Lev-Ari, Zeshu Shao
May 4, 2020·The Journal of the Acoustical Society of America·Terrin N TamatiDeniz Başkent
Jul 20, 2019·Cognition·Nadine LavanCarolyn McGettigan

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