Nasal place assimilation between phonetics and phonology: An EPG study of Italian nasal-to-velar clusters

An acoustic and electropalatographic analysis of nasal place assimilation in /nk/ and /ng/ clusters is provided for five native Italian speakers. Place assimilation for pre-velar nasals in Italian is usually said to be categorical in both word-internal and word-boundary position. However, empirical...

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Veröffentlicht in:Journal of phonetics 2013-03, Vol.41 (2), p.88-100
Hauptverfasser: Celata, Chiara, Calamai, Silvia, Ricci, Irene, Bertini, Chiara
Format: Artikel
Sprache:eng
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Zusammenfassung:An acoustic and electropalatographic analysis of nasal place assimilation in /nk/ and /ng/ clusters is provided for five native Italian speakers. Place assimilation for pre-velar nasals in Italian is usually said to be categorical in both word-internal and word-boundary position. However, empirical research on place assimilation in non-homorganic clusters in different languages has uncovered aspects of variation supporting a non-discrete view of several phonological processes previously thought of as obligatory and categorical. The present study aims at investigating the role of stylistic and internal factors on Italian nasal-to-velar cluster assimilation, such as speech rate variations (normal vs. slow speech), the lexical status of the cluster (word-internal vs. cross-boundary), stress position, and postnasal voicing. Assimilation is evaluated for frequency of occurrence, strength of application, and target intrinsic variability. Results indicate that nasal-to-velar clusters in Italian are mostly fully assimilated and therefore homorganic, but the process is also sensitive to factors such as speech rate and the presence of a word boundary. Patterns of variability are observed both within and across speakers, and sporadic gradient reduction of gestures is also detected. Both anticipatory and carry-over coarticulatory effects are found within the cluster; nasal-to-velar clusters are conceived of as a constituent with a single articulatory target and a complex gestural pattern distributed over a relatively extended temporal interval. ► Pre-velar nasal place assimilation in Italian tends to create homorganic clusters. ► The process is categorical in word-internal position, and at normal speech rate. ► At word boundaries and in slow speech incomplete assimilations emerge. ► Both anticipatory and carry-over coarticulation effects are detectable.
ISSN:0095-4470
1095-8576
DOI:10.1016/j.wocn.2012.10.002