caa a22 4500 388111461 CHVBK 20180307125354.0 cr unu---uuuuu 161130e199906 xx s 000 0 eng 10.1017/S0025100300006423 doi S0025100300006423 pii (NATIONALLICENCE)cambridge-10.1017/S0025100300006423 Walker Rachel Department of Linguistics, Grace Ford Salvatori 301, University of Southern California, Los Angeles, CA 90089-1693, USA. e-mail: rwalker@usc.edu Guaraní Voiceless Stops in Oral versus Nasal Contexts: An Acoustical Study [Elektronische Daten] [Rachel Walker] This acoustic study investigates voiceless stops in Guaraní that are described as transparent to nasal harmony. Voiceless stops in oral versus nasal contexts are examined in relation to theoretical issues of locality and phonetic implementation. First, the oral/nasal and voicing properties of the stops are considered in connection to proposals in phonological theory that feature spreading produces strictly continuous spans of a spreading property. The stops are discovered to display the acoustic attributes of voiceless oral obstruents; no evidence of nasal airflow energy was observed during closure nor was the closure fully voiced. These results suggest that strict continuity of a spreading featural property is not always found in the phonetic output. Second, the timing of the voicelessness is addressed. Interestingly, the duration of voicelessness of the stops [p, t] remains the same across oral/nasal environments, although the voiceless interval shifts to persevere longer into the following vowel in nasal contexts. The velar stop does not exhibit an increased perseverance of voicelessness after closure release—it displays the longest VOT of all places of articulation, and its VOT remains unaffected by oral/nasal context. It is suggested that incorporating a notion of conflicting realizational requirements in models of phonetic implementation is important in interpreting these results. Copyright © Journal of the International Phonetic Association 1999 Journal of the International Phonetic Association Cambridge University Press 29/1(1999-06), 63-94 0025-1003 29:1<63 1999 29 IPA https://doi.org/10.1017/S0025100300006423 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0025100300006423 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Walker Rachel Department of Linguistics, Grace Ford Salvatori 301, University of Southern California, Los Angeles, CA 90089-1693, USA. e-mail: rwalker@usc.edu NATIONALLICENCE 773 0- Journal of the International Phonetic Association Cambridge University Press 29/1(1999-06), 63-94 0025-1003 29:1<63 1999 29 IPA CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge