Temporal articulatory stability, phonological variation, and lexical contrast preservation in diaspora Tibetan

This dissertation examines how lexical tone can be represented with articulatory gestures, and the ways a gestural perspective can inform synchronic and diachronic analysis of the phonology and phonetics of a language. Tibetan is chosen an example of a language with interacting laryngeal and tonal phonology, a history of tonogenesis and dialect diversification, and recent contact-induced realignment of the tonal and consonantal systems. Despite variation in voice onset time (VOT) and presence/absence of the lexical tone contrast, speakers retain a consistent relative timing of consonant and vowel gestures. Recent research has attempted to integrate tone into the framework of Articulatory Phonology through the addition of tone gestures. Unlike other theories of phonetics-phonology, Articulatory Phonology uniquely incorporates relative timing as a key parameter. This allows the system to represent contrasts instantiated not just in the presence or absence of gestures, but also in how gestures are timed with each other. Building on the different predictions of various timing relations, along with the historical developments in the language, hypotheses are generated and tested with acoustic and articulatory experiments. Following an overview of relevant theory, the second chapter surveys past literature on the history of sound change and present phonological diversity of Tibetic dialects. Whereas Old Tibetan lacked lexical tone, contrasted voiced and voiceless obstruents, and exhibited complex clusters, a series of overlapping sound changes have led to some modern varieties that are tone, lack clusters, and vary in the expression of voicing and aspiration. Furthermore, speakers in the Tibetan diaspora use a variety that has grown out of the contact between diverse Tibetic dialects. The state of the language and the dynamics of diaspora have created a situation ripe for sound change, including the recombination of elements from different dialects and, potentially, the loss of tone contrasts. The nature of the diaspora Tibetan is investigated through an acoustic corpus study. Recordings made in Kathmandu, Nepal, are being transcribed and forced-aligned into a useful audio corpus. Speakers in the corpus come from diverse backgrounds across and outside traditional Tibetan-speaking regions, but the analysis presented here focuses on speakers who grew up in diaspora, with a mixed input of Standard Tibetan (spyi skad) and other Tibetan varieties. Especially notable among these speakers is the high variability of voice onset time (VOT) and its interaction with tone. An analysis of this data in terms of the relative timing of oral, laryngeal, and tone gestures leads to the generation of hypotheses for testing using articulatory data. The articulatory study is conducted using electromagnetic articulography (EMA), and six Tibetan-speaking participants. The key finding is that the relative timing of consonant and vowel gestures is consistent across phonological categories and across speakers who do and do not contrast tone. This result leads to the conclusion that the relative timing of speech gestures is conserved and acquired independently. Speakers acquire and generalize a limited inventory of timing patterns, and can use timing patterns even when the conditioning environment for the development of those patterns, namely tone, has been lost

Labial-dorsal interactions : a phonologically based approach

Głównym celem monografii jest wyjaśnienie bliskich fonologicznych relacji między dwiema artykulacyjnie odległymi klasami: spółgłoskami wargowymi (labialnymi) i grzbietowymi (dorsalnymi). Zaproponowane rozwiązanie sprowadza się do postulowania wspólnego dla tych grup elementu, reprezentującego miejsce artykulacji rzeczonych klas, co pozwala wyjaśnić ich częste interakcje przejawiające się w wielu procesach fonologicznych. Ponadto element ten charakteryzuje grupę samogłosek labialnych i półsamogłoskę [w], tłumacząc w ten sposób ich bliskie pokrewieństwo zarówno ze spółgłoskami labialnymi, jak i dorsalnymi. Zagadnienia poruszane w pracy wpisują ją w szeroki nurt badań nad wewnętrzną strukturą fonologicznych segmentów i wzajemnymi relacjami pomiędzy klasami (fonologia segmentalna), a bardziej szczegółowo, w badania nad właściwościami cech odpowiedzialnych za miejsce artykulacji spółgłosek oraz nad bliskimi relacjami tych ostatnich z samogłoskami. Wartościowym elementem podjętego tematu badań jest niewątpliwie złożoność zagadnienia i bogactwo procesów, w których ujawniają się wzajemne relacje spółgłosek labialnych i dorsalnych. Przykładem może być wokalizacja, epenteza czy dyftongizacja, które to procesy po bliższej analizie mogą przyczynić się do ujawnienia wewnętrznej struktury badanych klas

The Sound Patterns of Kachok in the Context of Bahnaric and North-Bahnaric Studies

This dissertation presents a description of the sound patterns of Kachok, Austroasiatic language spoken in northeastern Ratanakiri Province, Cambodia. The language is spoken by approximately 3000 people and is considered endangered (Simons & Fennig, 2018). Kachok is undocumented, and this dissertation is the first attempt to describe the language and its sound patterns. The goals of this dissertation are twofold: to contribute to linguistics and the science of phonetics and phonological typology, as well as increase the body of work on Austro-Asiatic languages, and to create resources for the Kachok language, culture, and people that have the potential to outlive the language itself. This dissertation describes the segmental phonology of Kachok, and then presents a new prosodic model of the sesquisyllable, a phenomenon prevalent in Southeast Asian languages

Learning [Voice]

The [voice] distinction between homorganic stops and fricatives is made by a number of acoustic correlates including voicing, segment duration, and preceding vowel duration. The present work looks at [voice] from a number of multidimensional perspectives. This dissertation\u27s focus is a corpus study of the phonetic realization of [voice] in two English-learning infants aged 1;1--3;5. While preceding vowel duration has been studied before in infants, the other correlates of post-vocalic voicing investigated here --- preceding F1, consonant duration, and closure voicing intensity --- had not been measured before in infant speech. The study makes empirical contributions regarding the development of the production of [voice] in infants, not just from a surface-level perspective but also with implications for the phonetics-phonology interface in the adult and developing linguistic systems. Additionally, several methodological contributions will be made in the use of large sized corpora and data modeling techniques. The study revealed that even in infants, F1 at the midpoint of a vowel preceding a voiced consonant was lower by roughly 50 Hz compared to a vowel before a voiceless consonant, which is in line with the effect found in adults. But while the effect has been considered most likely to be a physiological and nonlinguistic phenomenon in adults, it actually appeared to be correlated in the wrong direction with other aspects of [voice] here, casting doubt on a physiological explanation. Some of the consonant pairs had statistically significant differences in duration and closure voicing. Additionally, a preceding vowel duration difference was found and as well a preliminary indication of a developmental trend that suggests the preceding vowel duration difference is being learned. The phonetics of adult speech is also considered. Results are presented from a dialectal corpus study of North American English and a lab speech experiment which clarifies the relationship between preceding vowel duration and flapping and the relationship between [voice] and F1 in preceding vowels. Fluent adult speech is also described and machine learning algorithms are applied to learning the [voice] distinction using multidimensional acoustic input plus some lexical knowledge

La syllabe : objet théorique et réalité physique

International audienc

An exploration of the rhythm of Malay

In recent years there has been a surge of interest in speech rhythm. However we still lack a clear understanding of the nature of rhythm and rhythmic differences across languages. Various metrics have been proposed as means for measuring rhythm on the phonetic level and making typological comparisons between languages (Ramus et al, 1999; Grabe & Low, 2002; Dellwo, 2006) but the debate is ongoing on the extent to which these metrics capture the rhythmic basis of speech (Arvaniti, 2009; Fletcher, in press). Furthermore, cross linguistic studies of rhythm have covered a relatively small number of languages and research on previously unclassified languages is necessary to fully develop the typology of rhythm. This study examines the rhythmic features of Malay, for which, to date, relatively little work has been carried out on aspects rhythm and timing. The material for the analysis comprised 10 sentences produced by 20 speakers of standard Malay (10 males and 10 females). The recordings were first analysed using rhythm metrics proposed by Ramus et. al (1999) and Grabe & Low (2002). These metrics (∆C, %V, rPVI, nPVI) are based on durational measurements of vocalic and consonantal intervals. The results indicated that Malay clustered with other so-called syllable-timed languages like French and Spanish on the basis of all metrics. However, underlying the overall findings for these metrics there was a large degree of variability in values across speakers and sentences, with some speakers having values in the range typical of stressed-timed languages like English. Further analysis has been carried out in light of Fletcher’s (in press) argument that measurements based on duration do not wholly reflect speech rhythm as there are many other factors that can influence values of consonantal and vocalic intervals, and Arvaniti’s (2009) suggestion that other features of speech should also be considered in description of rhythm to discover what contributes to listeners’ perception of regularity. Spectrographic analysis of the Malay recordings brought to light two parameters that displayed consistency and regularity for all speakers and sentences: the duration of individual vowels and the duration of intervals between intensity minima. This poster presents the results of these investigations and points to connections between the features which seem to be consistently regulated in the timing of Malay connected speech and aspects of Malay phonology. The results are discussed in light of current debate on the descriptions of rhythm

Modelling phonologization: vowel reduction and epenthesis in Lunigiana dialects

Building upon wave-theoretic assumptions, this dissertation provides a formal description of the relationship between diatopic/diachronic micro-variation and phonologization. In particular, an analysis is performed of the phonetic/phonological properties of unstressed vowel reduction and vowel insertion in two Northern Italian dialects: Carrarese and Pontremolese. These dialects are argued to represent two frozen stages of these processes’ diffusion, Carrarese representing the diachronic stage Pontremolese has already gone through. Indeed, Pontremolese displays non-etymological vocoids that show the phonetic and phonological characteristics of epenthetic vowels and that, crucially, can be considered the phonologized correlates of Carrarese’s intrusive vocoids. These, in turn, should be rather considered articulatory/perceptually driven vowel-like releases. A formal account of this diatopic, diachronic and grammatical relationship is given that supports a modular grammar architecture, in which phonetics and phonology constitute two autonomous modules. Within such an architecture, the lateral forces (government and licensing) developed by standard Government Phonology are translated into violable constraints and inserted in a BiPhon grammar. In this optimality-theoretic grammar, the phonetics-phonology interface is managed by a set of cue constraints that map acoustic dimensions (formant structures) onto phonological primitives (elements). Furthermore, to integrate morphological information in the phonological forms, the Coloured Containment Theory is resorted to.Language Use in Past and Presen

Modelling phonologization: vowel reduction and epenthesis in Lunigiana dialects

Within a linguistic continuum, the further from the irradiation centre, the later a language is affected by a change; the later a language is reached by a change, the milder the outcomes. Building upon these wave-theoretic assumptions, this dissertation provides a formal description of the relationship between diatopic/diachronic micro-variation and phonologization. In particular, an analysis is performed of the phonetic/phonological properties of unstressed vowel reduction and vowel insertion in two Northern Italian dialects: Carrarese and Pontremolese. These dialects are argued to represent two frozen stages of these processes’ diffusion, Carrarese representing the diachronic stage Pontremolese has already gone through. Indeed, Pontremolese displays non-etymological vocoids that show the phonetic and phonological characteristics of epenthetic vowels and that, crucially, can be considered the phonologized correlates of Carrarese’s intrusive vocoids. These, in turn, should be rather considered articulatory/perceptually driven vowel-like releases. A formal account of this diatopic, diachronic and grammatical relationship is given that supports a modular grammar architecture, in which phonetics and phonology constitute, hence, two autonomous modules. Within such an architecture, the lateral forces (government and licensing) developed by standard Government Phonology are translated into violable constraints and inserted in a BiPhon grammar. In this optimality-theoretic grammar, the phonetics-phonology interface is managed by a set of cue constraints that map acoustic dimensions (formant structures) onto phonological primitives (elements). Furthermore, to integrate morphological information in the phonological forms, the Coloured Containment Theory is resorted to. This dissertation is of relevance to anyone interested in diatopic/diachronic micro-variation, phonologization, phonological theory and Italian dialectology