Stress correlates and vowel targets in Tongan

In this study, we determine the acoustic correlates of primary and secondary stress in Tongan. Vowels with primary stress show differences in F0, intensity, duration, F1, and voice quality, but F0 is the best predictor of primary stress. Vowels with secondary stress are mainly cued by a difference in F0. With regards to the effects of stress on the vowel space, we find that all five Tongan vowels are higher in the vowel space (have lower F1) when unstressed, with no differences in F2. Moreover, there is no reduction in the overall size of the vowel space. We interpret this pattern as evidence that unstressed vowels in Tongan are not undergoing centralization, nor are they otherwise reduced. Rather, Tongan speakers have separate targets for stressed and unstressed vowels

Phonetics of Tongan stress

In this study, we determine the acoustic correlates of primary and secondary stress in Tongan. Vowels with primary stress show differences in F0, intensity, duration, F1, and spectral measures compared to unstressed vowels, but a linear discriminant analysis suggests F0 and duration are the best cues for discriminating vowels with primary stress from unstressed vowels. Vowels with secondary stress are mainly marked by differences in F0 relative to unstressed vowels. With regards to the effects of stress on the vowel space, we find that all five Tongan vowels are higher in the vowel space (have lower F1) when unstressed. Moreover, there is no reduction in the overall size of the vowel space. We interpret this pattern as evidence that unstressed vowels in Tongan are not prone to centralization, vowel reduction, or undershoot. The results, however, are consistent with a sonority expansion account (Beckman et al. 1992), whereby stressed vowels are lowered to enhance sonority

Phonological Factors Affecting L1 Phonetic Realization of Proficient Polish Users of English

Acoustic phonetic studies examine the L1 of Polish speakers with professional level proficiency in English. The studies include two tasks, a production task carried out entirely in Polish and a phonetic code-switching task in which speakers insert target Polish words or phrases into an English carrier. Additionally, two phonetic parameters are studied: the oft-investigated VOT, as well as glottalization vs. sandhi linking of word-initial vowels. In monolingual Polish mode, L2 interference was observed for the VOT parameter, but not for sandhi linking. It is suggested that this discrepancy may be related to the differing phonological status of the two phonetic parameters. In the code-switching tasks, VOTs were on the whole more English-like than in monolingual mode, but this appeared to be a matter of individual performance. An increase in the rate of sandhi linking in the code-switches, except for the case of one speaker, appeared to be a function of accelerated production of L1 target items

Relative importance of phonation cues in White Hmong tone perception

BLS 38: General Session and Thematic Session on Language Contac

Hacia una teoría unificada de la producción y la percepción de la voz

At present, two important questions about voice remain unanswered: When voice quality changes, what physiological alteration caused this change, and if a change to the voice production system occurs, what change in perceived quality can be expected? We argue that these questions can only be answered by an integrated model of voice linking production and perception, and we describe steps towards the development of such a model. Preliminary evidence in support of this approach is also presented. We conclude that development of such a model should be a priority for scientists interested in voice, to explain what physical condition(s) might underlie a given voice quality, or what voice quality might result from a specific physical configuration.En la actualidad quedan por contestar dos cuestiones importantes relacionadas con la voz, a saber: (1) cuando la cualidad de la voz cambia, ¿qué alteración en el mecanismo vocal es la responsable?; y (2) si se produce un cambio en el sistema de producción de la voz, ¿qué cambio puede esperarse en la cualidad de voz percibida auditivamente? Sostenemos que la única respuesta posible a estas preguntas reside en un modelo de voz integrado que una producción y percepción, y describimos pasos hacia el desarrollo de tal modelo. Presentamos evidencias preliminares para respaldar esta propuesta. Concluimos que el desarrollo de semejante modelo debería ser una prioridad para los científicos interesados en la voz con el fin de explicar qué condición o condiciones físicas podrían subyacer a una cualidad de voz determinada, o qué cualidad de voz podría derivar de una configuración física específica