School of Languages and Linguistics - Research Publications
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ItemProsa australiana(Intercultural Studies Group, 2010)
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ItemAcoustic analysis of the effects of 24 hours of sustained wakefulness(Australasian Speech Science and Technology Association, 2010)The effect of 24 hours of sustained wakefulness on the speech of healthy adults is poorly documented. Therefore, speech samples were systematically acquired (e.g., every four hours) from 18 healthy adults over 24 hours. Stimuli included automated and extemporaneous tasks, sustained vowel and a read passage. Measures of timing and frequency were derived acoustically using Praat and significant changes were observed on all tasks. The effect of fatigue on speech was found to be strongest just before dawn (after 22 hours). Key features of timing (e.g., mean pause length), frequency (e.g., F4 variation) and power (alpha ratio) changed as a function of increasing levels of fatigue. Index Terms: fatigue, voice, tiredness, clinical marker
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ItemNo Preview AvailableAcoustic analysis of the effects of sustained wakefulness on speech(ACOUSTICAL SOC AMER AMER INST PHYSICS, 2010-12)Exposing healthy adults to extended periods of wakefulness is known to induce changes in psychomotor functioning [Maruff et al. (2005). J. Sleep Res. 14, 21-27]. The effect of fatigue on speech is less well understood. To date, no studies have examined the pitch and timing of neurologically healthy individuals over 24 h of sustained wakefulness. Therefore, speech samples were systematically acquired (e.g., every 4 h) from 18 healthy adults over 24 h. Stimuli included automated and extemporaneous speech tasks, sustained vowel, and a read passage. Measures of timing, frequency and spectral energy were derived acoustically using PRAAT and significant changes were observed on all tasks. The effect of fatigue on speech was found to be strongest just before dawn (after 22 h). Specifically, total speech time, mean pause length, and total signal time all increased as a function of increasing levels of fatigue on the reading tasks; percentage pause and mean pause length decreased on the counting task; F4 variation decreased on the sustained vowel tasks /a:/; and alpha ratio increased on the extemporaneous speech tasks. These findings suggest that acoustic methodologies provide objective data on central nervous system functioning and that changes in speech production occur in healthy adults after just 24 h of sustained wakefulness.
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ItemMarking of focus in Indian English of L1 Bengali speakers(Australasian Speech Science and Technology Australia (ASSTA), 2010)A production experiment was designed to examine the effect of narrow focus structure on the intonational patterns of f0 and duration in English spoken by L1 Bengali speakers of English. The results show significantly higher pitch excursion on the accented words and a small increase in the duration of the accented syllable in narrow versus broad focus structures. In addition, the shape of the low rising f0 pattern used on narrow focused words is similar to the pattern observed in Bengali and could potentially be an additional cue to focus marking for English speakers of this L1 background. Index Terms: intonational phonology, Indian English, focus, rising pitch
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ItemTrading in terms: linguistic affiliation in Arandic songs and alternate registers(Pacific Linguistics Publishers, 2010)
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ItemLanguages Other Than English in Victorian government schools 2009(Victorian Department of Education and Early Childhood Development, 2010)
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Item中国在全球一体化下的关键主题 (Transparency and good governance: key themes in China’s global integration)(Chinese Sciences Today, Journal of the Chinese Academy of Social Sciences, 2010-03-04)
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ItemMéxico y China: Amenazas, oportunidades y el impacto de la cultura(Impresora Múltiple, 2010)
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ItemLADO, Validity and Language Testing(Wolf Legal Publishers, 2010)
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ItemPost-aspiration in standard Italian: some first cross-regional acoustic evidence(ISCA-INT SPEECH COMMUNICATION ASSOC, 2010)
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