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Journal of Phonetics

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https://www.readbyqxmd.com/read/29104329/voice-onset-time-vot-at-50-theoretical-and-practical-issues-in-measuring-voicing-distinctions
#1
Arthur S Abramson, D H Whalen
Just over fifty years ago, Lisker and Abramson proposed a straightforward measure of acoustic differences among stop consonants of different voicing categories, voice onset time (VOT). Since that time, hundreds of studies have used this method. Here, we review the original definition of VOT, propose some extensions to the definition, and discuss some problematic cases. We propose a set of terms for the most important aspects of VOT and a set of Praat labels that could provide some consistency for future cross-study analyses...
July 2017: Journal of Phonetics
https://www.readbyqxmd.com/read/28947839/the-representation-and-execution-of-articulatory-timing-in-first-and-second-language-acquisition
#2
Melissa A Redford, Grace E Oh
The early acquisition of language-specific temporal patterns relative to the late development of speech motor control suggests a dissociation between the representation and execution of articulatory timing. The current study tested for such a dissociation in first and second language acquisition. American English-speaking children (5- and 8-year-olds) and Korean-speaking adult learners of English repeatedly produced real English words in a simple carrier sentence. The words were designed to elicit different language-specific vowel length contrasts...
July 2017: Journal of Phonetics
https://www.readbyqxmd.com/read/28503007/individual-differences-in-categorical-perception-of-speech-cue-weighting-and-executive-function
#3
Eun Jong Kong, Jan Edwards
This study examined individual differences in categorical perception and the use of multiple acoustic cues in the perception of the stop voicing contrast. Goals were to investigate whether gradiency of speech perception was related to listeners' differential sensitivity to acoustic cues and to individual differences in executive function. The experiment included two speech perception tasks (visual analogue scaling [VAS] and anticipatory eye movement [AEM]) administered to 30 English-speaking adults in two separate experimental sessions...
November 2016: Journal of Phonetics
https://www.readbyqxmd.com/read/28042187/variation-in-the-strength-of-lexical-encoding-across-dialects
#4
Cynthia G Clopper, Terrin N Tamati, Janet B Pierrehumbert
Lexical processing is slower and less accurate for unfamiliar dialects than familiar dialects. The goal of the current study was to test the hypothesis that dialect differences in lexical processing reflect differences in lexical encoding strength across dialects. Lexical encoding (i.e., updating the cognitive lexical representation to reflect the current token) was distinguished from lexical recognition (i.e., mapping the incoming acoustic signal to the target lexical category) in a series of lexical processing tasks with Midland and Northern American English...
September 2016: Journal of Phonetics
https://www.readbyqxmd.com/read/28867850/audiovisual-perceptual-learning-with-multiple-speakers
#5
Aaron D Mitchel, Chip Gerfen, Daniel J Weiss
One challenge for speech perception is between-speaker variability in the acoustic parameters of speech. For example, the same phoneme (e.g. the vowel in "cat") may have substantially different acoustic properties when produced by two different speakers and yet the listener must be able to interpret these disparate stimuli as equivalent. Perceptual tuning, the use of contextual information to adjust phonemic representations, may be one mechanism that helps listeners overcome obstacles they face due to this variability during speech perception...
May 2016: Journal of Phonetics
https://www.readbyqxmd.com/read/27041781/influences-of-selective-adaptation-on-perception-of-audiovisual-speech
#6
James W Dias, Theresa C Cook, Lawrence D Rosenblum
Research suggests that selective adaptation in speech is a low-level process dependent on sensory-specific information shared between the adaptor and test-stimuli. However, previous research has only examined how adaptors shift perception of unimodal test stimuli, either auditory or visual. In the current series of experiments, we investigated whether adaptation to cross-sensory phonetic information can influence perception of integrated audio-visual phonetic information. We examined how selective adaptation to audio and visual adaptors shift perception of speech along an audiovisual test continuum...
May 2016: Journal of Phonetics
https://www.readbyqxmd.com/read/27019538/velar-vowel-coarticulation-in-a-virtual-target-model-of-stop-production
#7
Stefan A Frisch, Sylvie M Wodzinski
Velar-vowel coarticulation in English, resulting in so-called velar fronting in front vowel contexts, was studied using ultrasound imaging of the tongue during /k/ onsets of monosyllabic words with no coda or a labial coda. Ten native English speakers were recorded and analyzed. A variety of coarticulation patterns that often appear to contain small differences in typical closure location for similar vowels was found. An account of the coarticulation pattern is provided using a virtual target model of stop consonant production where there are two /k/ allophones in English, one for front vowels and one for non-front vowels...
May 2016: Journal of Phonetics
https://www.readbyqxmd.com/read/26966337/differences-in-coda-voicing-trigger-changes-in-gestural-timing-a-test-case-from-the-american-english-diphthong-a%C3%A9%C2%AA
#8
Anne Pycha, Delphine Dahan
We investigate the hypothesis that duration and spectral differences in vowels before voiceless versus voiced codas originate from a single source, namely the reorganization of articulatory gestures relative to one another in time. As a test case, we examine the American English diphthong /aɪ/, in which the acoustic manifestations of the nucleus /a/ and offglide /ɪ/ gestures are relatively easy to identify, and we use the ratio of nucleus-to-offglide duration as an index of the temporal distance between these gestures...
May 2016: Journal of Phonetics
https://www.readbyqxmd.com/read/27773955/the-role-of-prominence-in-determining-the-scope-of-boundary-related-lengthening-in-greek
#9
Argyro Katsika
This study aims at examining and accounting for the scope of the temporal effect of phrase boundaries. Previous research has indicated that there is an interaction between boundary-related lengthening and prominence such that the former extends towards the nearby prominent syllable. However, it is unclear whether this interaction is due to lexical stress and/or phrasal prominence (marked by pitch accent) and how far towards the prominent syllable the effect extends. Here, we use an electromagnetic articulography (EMA) study of Greek to examine the scope of boundary-related lengthening as a function of lexical stress and pitch accent separately...
March 2016: Journal of Phonetics
https://www.readbyqxmd.com/read/26834297/framing-a-socio-indexical-basis-for-the-emergence-and-cultural-transmission-of-phonological-systems
#10
Andrew R Plummer, Mary E Beckman
Moulin-Frier et al. (2016) proffer a conceptual framework and computational modeling architecture for the investigation of the emergence of phonological universals for spoken languages. They validate the framework and architecture by testing to see whether universals such as the prevalence of triangular vowel systems that show adequate dispersion in the F1-F2-F3 space can fall out of simulations of referential communication between social agents, without building principles such as dispersion directly into the model...
November 1, 2015: Journal of Phonetics
https://www.readbyqxmd.com/read/26688597/unifying-speech-and-language-in-a-developmentally-sensitive-model-of-production
#11
Melissa A Redford
Speaking is an intentional activity. It is also a complex motor skill; one that exhibits protracted development and the fully automatic character of an overlearned behavior. Together these observations suggest an analogy with skilled behavior in the non-language domain. This analogy is used here to argue for a model of production that is grounded in the activity of speaking and structured during language acquisition. The focus is on the plan that controls the execution of fluent speech; specifically, on the units that are activated during the production of an intonational phrase...
November 1, 2015: Journal of Phonetics
https://www.readbyqxmd.com/read/26644630/individual-differences-in-phonetic-cue-use-in-production-and-perception-of-a-non-native-sound-contrast
#12
Jessamyn Schertz, Taehong Cho, Andrew Lotto, Natasha Warner
The current work examines native Korean speakers' perception and production of stop contrasts in their native language (L1, Korean) and second language (L2, English), focusing on three acoustic dimensions that are all used, albeit to different extents, in both languages: voice onset time (VOT), f0 at vowel onset, and closure duration. Participants used all three cues to distinguish the L1 Korean three-way stop distinction in both production and perception. Speakers' productions of the L2 English contrasts were reliably distinguished using both VOT and f0 (even though f0 is only a very weak cue to the English contrast), and, to a lesser extent, closure duration...
September 1, 2015: Journal of Phonetics
https://www.readbyqxmd.com/read/26543276/indexical-properties-influence-time-varying-amplitude-and-fundamental-frequency-contributions-of-vowels-to-sentence-intelligibility
#13
Daniel Fogerty
The present study investigated how non-linguistic, indexical information about talker identity interacts with contributions to sentence intelligibility by the time-varying amplitude (temporal envelope) and fundamental frequency (F0). Young normal-hearing adults listened to sentences that preserved the original consonants but replaced the vowels with a single vowel production. This replacement vowel selectively preserved amplitude or F0 cues of the original vowel, but replaced cues to phonetic identity. Original vowel duration was always preserved...
September 2015: Journal of Phonetics
https://www.readbyqxmd.com/read/26207075/judgments-of-self-identified-gay-and-heterosexual-male-speakers-which-phonemes-are-most-salient-in-determining-sexual-orientation
#14
Erik C Tracy, Sierra A Bainter, Nicholas P Satariano
While numerous studies have demonstrated that a male speaker's sexual orientation can be identified from relatively long passages of speech, few studies have evaluated whether listeners can determine sexual orientation when presented with word-length stimuli. If listeners are able to distinguish between self-identified gay and heterosexual male speakers of American English, it is unclear whether they form their judgments based on a phoneme, such as a vowel or consonant, or multiple phonemes, such as a vowel and a consonant...
September 2015: Journal of Phonetics
https://www.readbyqxmd.com/read/25197153/the-role-of-abstraction-in-non-native-speech-perception
#15
Bozena Pajak, Roger Levy
The end-result of perceptual reorganization in infancy is currently viewed as a reconfigured perceptual space, "warped" around native-language phonetic categories, which then acts as a direct perceptual filter on any non-native sounds: naïve-listener discrimination of non-native-sounds is determined by their mapping onto native-language phonetic categories that are acoustically/articulatorily most similar. We report results that suggest another factor in non-native speech perception: some perceptual sensitivities cannot be attributed to listeners' warped perceptual space alone, but rather to enhanced general sensitivity along phonetic dimensions that the listeners' native language employs to distinguish between categories...
September 1, 2014: Journal of Phonetics
https://www.readbyqxmd.com/read/24932053/phonetic-category-recalibration-what-are-the-categories
#16
Eva Reinisch, David R Wozny, Holger Mitterer, Lori L Holt
Listeners use lexical or visual context information to recalibrate auditory speech perception. After hearing an ambiguous auditory stimulus between /aba/ and /ada/ coupled with a clear visual stimulus (e.g., lip closure in /aba/), an ambiguous auditory-only stimulus is perceived in line with the previously seen visual stimulus. What remains unclear, however, is what exactly listeners are recalibrating: phonemes, phone sequences, or acoustic cues. To address this question we tested generalization of visually-guided auditory recalibration to 1) the same phoneme contrast cued differently (i...
July 1, 2014: Journal of Phonetics
https://www.readbyqxmd.com/read/25300341/the-coordination-of-boundary-tones-and-its-interaction-with-prominence
#17
Argyro Katsika, Jelena Krivokapić, Christine Mooshammer, Mark Tiede, Louis Goldstein
This study investigates the coordination of boundary tones as a function of stress and pitch accent. Boundary tone coordination has not been experimentally investigated previously, and the effect of prominence on this coordination, and whether it is lexical (stress-driven) or phrasal (pitch accent-driven) in nature is unclear. We assess these issues using a variety of syntactic constructions to elicit different boundary tones in an Electromagnetic Articulography (EMA) study of Greek. The results indicate that the onset of boundary tones co-occurs with the articulatory target of the final vowel...
May 1, 2014: Journal of Phonetics
https://www.readbyqxmd.com/read/24465063/spatiotemporal-coupling-between-speech-and-manual-motor-actions
#18
Benjamin Parrell, Louis Goldstein, Sungbok Lee, Dani Byrd
Much evidence has been found for pervasive links between the manual and speech motor systems, including evidence from infant development, deictic pointing, and repetitive tapping and speaking tasks. We expand on the last of these paradigms to look at intra- and cross-modal effects of emphatic stress, as well as the effects of coordination in the absence of explicit rhythm. In this study, subjects repeatedly tapped their finger and synchronously repeated a single spoken syllable. On each trial, subjects placed an emphatic stress on one finger tap or one spoken syllable...
January 2014: Journal of Phonetics
https://www.readbyqxmd.com/read/24860200/the-effects-of-native-language-on-indian-english-sounds-and-timing-patterns
#19
Hema Sirsa, Melissa A Redford
This study explored whether the sound structure of Indian English (IE) varies with the divergent native languages of its speakers or whether it is similar regardless of speakers' native languages. Native Hindi (Indo-Aryan) and Telugu (Dravidian) speakers produced comparable phrases in IE and in their native languages. Naïve and experienced IE listeners were then asked to judge whether different sentences had been spoken by speakers with the same or different native language backgrounds. The findings were an interaction between listener experience and speaker background such that only experienced listeners appropriately distinguished IE sentences produced by speakers with different native language backgrounds...
November 2013: Journal of Phonetics
https://www.readbyqxmd.com/read/24535890/speaking-rate-effects-on-locus-equation-slope
#20
Jeff Berry, Gary Weismer
A locus equation describes a 1st order regression fit to a scatter of vowel steady-state frequency values predicting vowel onset frequency values. Locus equation coefficients are often interpreted as indices of coarticulation. Speaking rate variations with a constant consonant-vowel form are thought to induce changes in the degree of coarticulation. In the current work, the hypothesis that locus slope is a transparent index of coarticulation is examined through the analysis of acoustic samples of large-scale, nearly continuous variations in speaking rate...
November 2013: Journal of Phonetics
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