15th International Congress of Phonetic Sciences (ICPhS-15)
Glottalization phenomena in the literary Persian of Tehran is shown to assume three different functions: (i) a prosodic function, (ii) a segmentally distinctive function, and (iii) a final creak. What have the three types of glottalization phonetically in common? Laryngographical and acoustic results indicate that the irregular vibration of the vocal folds and the decrease in F0 are the most frequent correlates of the three glottalization types. The irregularity for the three cases is essentially of the creaky voice type, as described by Fourcin, 1981 and Ladefoged, 1996. Speech rate has various effects on the first two types, but no effect on the final creak. Word initial vowels start in most cases with at least two irregular vibrations, but do not necessarily begin with a complete glottal closure, unlike what is indicated in the literature.
Bibliographic reference. Assadi, Sh. S. (2003): "Laryngographic, acoustic and perceptive study of glottalization phenomena in Persian", In ICPhS-15, 3117-3120.