Phonetics

2018 ◽  
Author(s):  
Golnaz Modarresi Ghavami
Keyword(s):  
Final Section ◽  
Voice Onset Time ◽  
Onset Time ◽  
Acoustic Properties ◽  
Vowel Length ◽  
Sound System ◽  
Vowel Space ◽  
Suprasegmental Features ◽  
Sibilant Fricatives ◽  
Manner Of Articulation

This chapter discusses the articulatory and acoustic properties of the sound system of Standard Modern Persian. It starts with a brief review of early work on the sound system of New Persian and its development into Modern Persian. The second section examines consonants and vowels in Standard Modern Persian. In this section, issues such as place and manner of articulation of consonants, Voice Onset Time and its importance in distinguishing voiced and voiceless obstruents, the acoustics of glottal consonants, sibilant and non-sibilant fricatives, and rhotics are discussed. The section on vowels addresses vowel space, vowel length, and the acoustics of diphthongs in Standard Modern Persian. The phonetics of the suprasegmental features of stress and intonation are the topic a final section in this chapter.

Phonetic documentation in three collections: Topics and evolution

2020 ◽  
pp. 1-27
Author(s):  
D. H. Whalen ◽  
Christian DiCanio ◽  
Rikker Dockum
Keyword(s):  
English Language ◽  
Voice Onset Time ◽  
Onset Time ◽  
Acoustic Properties ◽  
Physiological Measures ◽  
Vowel Length ◽  
Preliminary Study ◽  
Limited Coverage

Phonetic aspects of many languages have been documented, though the breadth and focus of such documentation varies substantially. In this survey, phonetic aspects (here called ‘categories’) that are typically reported were assessed in three English-language collections – the Illustrations of the IPA from the Journal of the International Phonetic Association, articles from the Journal of Phonetics, and papers from the Ladefoged/Maddieson Sounds of the World’s Languages (SOWL) documentation project. Categories were defined for consonants (e.g. Voice Onset Time (VOT) and frication spectrum; 10 in total), vowels (e.g. formants and duration; 7 in total) and suprasegmentals (e.g. stress and distinctive vowel length, 6 in total). The Illustrations, due to their brevity, had, on average, limited coverage of the selected categories (12% of the 23 categories). Journal of Phonetics articles were typically theoretically motivated, but 64 had sufficient measurements to count as phonetic documentation; these also covered 12% of the categories. The SOWL studies, designed to cover as much of the phonetic structure as feasible in an article-length treatment, achieved 41% coverage on average. Four book-length studies were also examined, with an average of 49% coverage. Phonetic properties of many language families have been studied, though Indo-European is still disproportionately represented. Physiological measures were excluded as being less common, and perceptual measures were excluded as being typically more theoretical. This preliminary study indicates that certain acoustic properties of languages are typically measured and may be considered as an impetus for later, fuller coverage, but broader consensus on the categories is needed. Current and future documentation efforts would benefit these considerations being addressed.

The perceptual acquisition of Thai phonology by English speakers: task and stimulus effects

2003 ◽  
Vol 19 (3) ◽  
pp. 209-223 ◽  
Author(s):  
Joe Pater
Keyword(s):  
Voice Onset Time ◽  
Onset Time ◽  
Acoustic Properties ◽  
Experimental Conditions ◽  
Lexical Representations ◽  
Place Of Articulation ◽  
Task Effects ◽  
Stimulus Effects ◽  
Parallel Effect ◽  
Native Speakers Of English

This article presents a follow-up to Curtin et al.’s study of the perceptual acquisition of Thai laryngeal contrasts by native speakers of English, which found that subjects performed better on contrasts in voice than aspiration. This finding - surprising in light of earlier cross-linguistic voice onset time (VOT) research - was attributed to the fact that the task tapped lexical representations, which are unspecified for aspiration according to standard assumptions in generative phonology. The present study further investigated possible task effects by examining the discrimination and categorization of the same stimuli in various experimental conditions. Stimulus effects were also investigated by performing token-based analyses of the results, and by comparing them to acoustic properties of the tokens. The outcome of the discrimination experiment was the opposite of the earlier study, with significantly better performance on contrasts in aspiration than voice, even on a lexical task. A second finding of this experiment is that place of articulation interacts with the perception of the laryngeal distinctions; the aspiration distinction is discriminated better on the labials, and voice on alveolars. A parallel effect of place of articulation was also found in a categorization experiment.

scholarly journals The Use of Vowel Length in Making Voicing Judgments by Native Listeners of English and Spanish: Implications for Rate Normalization

2019 ◽  
Vol 63 (2) ◽  
pp. 436-452
Author(s):  
Navin Viswanathan ◽  
Annie J. Olmstead ◽  
M. Pilar Aivar
Keyword(s):  
Native Speakers ◽  
Voice Onset Time ◽  
Speech Rate ◽  
Onset Time ◽  
English Speakers ◽  
Vowel Length ◽  
Typical Range

Among other characteristics, voiced and voiceless consonants differ in voice onset time (VOT; Lisker & Abramson, 1964). In addition, in English, voiced consonants are typically followed by longer vowels than their unvoiced counterparts (Allen & Miller, 1999). In Spanish, this relationship is less systematic (Zimmerman & Sapon, 1958). In two experiments, we investigated perceptual sensitivities of English and Spanish native speakers to following vowel length (VL) in categorizing syllables that ranged from a prevoiced bilabial stop [ba] to a long-lag bilabial stop [pa]. According to our results, English speakers show sensitivity to following vowels with VLs falling within an English-typical range (Experiment 1), but not when vowels are shorter and in a Spanish-typical range (Experiment 2). Interestingly, Spanish native speakers do not show sensitivity to following VL in either condition. These results suggest that VOT-VL tradeoffs in perception reflect phonological sensitivities of listeners and are not reducible to speech rate compensation.

Acoustic and perceptual effects of vowel length on voice onset time in Thai stops

1998 ◽  
Vol 103 (5) ◽  
pp. 3087-3087
Author(s):  
Chutamanee Onsuwan ◽  
Patrice S. Beddor
Keyword(s):  
Voice Onset Time ◽  
Onset Time ◽  
Vowel Length

scholarly journals Spit or sbit? ST-type consonant clusters in the speech of Polish learners of English

2021 ◽  
Vol Volume 138 (4) ◽  
pp. 187-199
Author(s):  
Geoffrey Schwartz
Keyword(s):  
Voice Onset Time ◽  
Onset Time ◽  
Initial Position ◽  
Small Scale ◽  
Consonant Clusters ◽  
Stop Consonants ◽  
Sibilant Fricatives ◽  
Speech Research ◽  
L1 English

This paper presents two small-scale acoustic phonetic studies investigating the pronunciation of sibilant-stop (ST) consonant clusters in Polish, and in the L2 speech of L1 Polish learners of English. In English, aspiration of fortis stops is not attested in the post-/s/ context. Rather, short-lag voice onset time (VOT) measures are observed in L1 English in post-/s/ stop consonants, a phonetic weakening that renders them phonetically similar in terms of VOT to lenis stops in initial position. In Polish, both voiced and voiceless stops may appear after sibilant fricatives. The acoustic results suggest that (1) L1 Polish does not weaken its stops in ST clusters, and (2) that more L1 Polish speakers exhibit some weakening in their L2 English clusters as a function of proficiency, but do not produce native-like VOTs in ST sequences. Implications of these findings for L2 speech research and the phonological status of ST clusters are discussed.

scholarly journals Temporal acoustic correlates of the voicing contrast in European Portuguese stops

2010 ◽  
Vol 40 (3) ◽  
pp. 261-275 ◽  
Author(s):  
Marisa Lousada ◽  
Luis M. T. Jesus ◽  
Andreia Hall
Keyword(s):  
Voice Onset Time ◽  
Onset Time ◽  
Temporal Analysis ◽  
Acoustic Properties ◽  
Vowel Duration ◽  
Language Therapy ◽  
Acoustic Correlates ◽  
Voicing Contrast ◽  
European Portuguese ◽  
Closure Duration

This study focuses on the temporal analysis of stops /p b t d k ɡ/ and devoicing analysis of voiced stops /b d ɡ/ produced in different word positions by six native speakers of European Portuguese. The study explores acoustic properties related to voicing. The following acoustic properties were measured: voice onset time (VOT), stop duration, closure duration, release duration, voicing into closure duration, duration of the preceding vowel and duration of the following vowel. Results suggested that when [b d ɡ] were devoiced, the acoustic properties stop duration, closure duration, duration of the following vowel, duration of the preceding vowel and duration of voicing into closure were relevant for the voicing distinction. Implications for research and practice in speech and language therapy are discussed. Further investigation is needed to find how the productions analysed in the present study were perceived by listeners, specifically productions of devoiced stops.

scholarly journals First language attrition in the speech of Dutch–English bilinguals: The case of monozygotic twin sisters

2012 ◽  
Vol 15 (4) ◽  
pp. 687-700 ◽  
Author(s):  
ROBERT MAYR ◽  
SACHA PRICE ◽  
INEKE MENNEN
Keyword(s):  
Voice Onset Time ◽  
First Language ◽  
Onset Time ◽  
Theoretical Models ◽  
Monozygotic Twin ◽  
Formant Frequency ◽  
Vowel Space ◽  
First Language Attrition ◽  
L2 Speaking ◽  
L1 And L2

Recent years have seen a proliferation of research on attrition in L1 speech (de Leeuw, Mennen & Scobbie, in press; de Leeuw, Schmid & Mennen, 2010; Dmitrieva, Jongman & Sereno, 2010; Mennen, 2004). Adding to this line of inquiry, the present study investigates the speech of a 62-year-old bilingual monozygotic twin who emigrated to an L2-speaking environment 30 years ago. Changes in L1 accent were assessed by comparing her speech to that of her identical twin sister who remained in the L1-speaking environment, thus providing a unique control setting. Acoustic analyses of voice onset time and vowels indicate pervasive changes to the emigrated twin's L1 accent, with attrition presenting in the form of cross-linguistic assimilation patterns. Interestingly, her L1 vowel space exhibited a systematic increase in first formant frequency, confirming claims that L1 and L2 sounds may be related to each other at a system-wide level (Chang, 2010, 2011; Guion, 2003). Implications for theoretical models of bilingual sound systems are discussed.

scholarly journals The Swallowing and Voicing Characteristics of Pharyngeal Dystonia: A Single Case Report

2001 ◽  
Vol 48 (1) ◽  
pp. 21-31
Author(s):  
Loren Kahn ◽  
Heila Jordaan
Keyword(s):  
Voice Onset Time ◽  
Single Case ◽  
Voice Quality ◽  
Onset Time ◽  
Acoustic Properties ◽  
Single Case Report ◽  
Swallowing Difficulties ◽  
Swallowing Difficulty ◽  
The Subject ◽  
The Voice

This paper describes the swallowing difficulty and abnormal voicing characteristics of a subject with pharyngeal dystonia. This rare form of dystonia, considered to be a neurological condition resulting in involuntary spasm of the muscles of the pharynx, has not been documented in terms of its effects on the acoustic properties of the voice. This study revealed that during pharyngeal spasm, there are significant delays in voice onset time, a reduction in fundamental frequency, an increased percentage of sub-harmonics and variability in the amplitude perturbation quotient as well as shimmer. There was also evidence of these characteristics during periods of 'spasm-free' voice production, suggesting that the condition might be more consistent than what the subject described. Resonance disturbances were observed in spasm, which might explain the 'hollow' and affected voice quality. The subject also reported severe swallowing difficulties during the periods of spasm, characterised by a tight constriction at the level of the subject's throat. It is clear that an abnormality at the level of the cricopharyngeal muscle has a dual effect on the acoustic properties of the voice and on swallowing.

scholarly journals Effect of emphasis spread on coronal stop articulation in Qatari Arabic

2020 ◽  
Vol 5 (1) ◽  
pp. 16
Author(s):  
Vladimir Kulikov ◽  
Fatemeh Mohsenzadeh ◽  
Rawand Syam
Keyword(s):  
Speech Production ◽  
Acoustic Analysis ◽  
Native Speakers ◽  
Voice Onset Time ◽  
Spectral Characteristics ◽  
Onset Time ◽  
Acoustic Properties ◽  
Stop Consonants ◽  
Gulf Arabic ◽  
Complete Transformation

Emphasis (contrastive uvularisation) in Arabic spreads from an emphatic consonant to neighboring segments (Davis 1995). The effect of emphasis spread on a consonant is manifested as lowering of its spectral mean (Jongman et al. 2011). Although stop consonants reveal a strong effect of emphasis, it is not known how emphasis spread affects other acoustic properties of stops, e.g. voice onset time (VOT). Previous studies (Kulikov 2018) showed that VOT and emphasis are linked in speech production: plain /t/ in Gulf Arabic is aspirated; emphatic /ṭ/ has short-lag VOT. Phonological theory predicts that plain /t/ should become more emphatic in emphatic context, which might reduce stop VOT as well. The current study investigates the effect of emphasis spread on VOT in word-initial coronal stops in Qatari Arabic. The stimuli, produced by sixteen native speakers of Qatari Arabic, contained target plain and emphatic stops /t/, /ṭ/ followed by short or long low vowel, and plain coronal obstruents /t, s, ð/ or their emphatic counterparts /ṭ, ṣ, ð̣/. The acoustic analysis included measurements of VOT and spectral mean of burst in the stop, and F1, F2, F3 frequencies at the vowel beginning, middle and end. The results showed that final emphatic obstruent triggered emphasis spread across the syllable. The effect of emphasis on the vowel was stronger next to the emphatic obstruent (p < .01). Spectral mean of burst in plain /t/ was lower in the emphatic context (D = 276 Hz, p = .05). VOT, however, was not affected by emphasis spread. Plain /t/ had long-lag VOT averaging 52 ms; emphatic /ṭ/ had short-lag VOT averaging 17 ms. These values were not different in emphatic context (p = .743). The findings demonstrate that emphasis spread within a syllable affects only spectral characteristics of a coronal stop. Emphaticness of plain /t/ did not affect its VOT and did not result in complete transformation of the stop category

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