Evidence of Gemination in Persian : Phonetic and phonological study of lexical and post-lexical geminates <Article>

The purpose of this study is to examine the phonetic interpretation of geminate contrast and the articulatory differences between the lexical and post-lexical geminates in Persian. In terms of two geminate types, the findings indicated that word-boundary geminates display the same temporal values as lexical geminates, however, unlike lexical geminate consonants, the phonetic implementation of adjacent identical consonants in word-boundary geminates are not allocated the feature [+tense]. Such phonologically difference affected the vowels preceding the two geminate types. Results from analyzing the qualitatively short and long vowels preceding the word-boundary geminates showed separate distributions for consonant sequences affected by different vowel types in which the tenseness of the vowel /ɑ/ and the duration of consonant sequences would result in considerable interaction. Contrary to RMS amplitude, formant frequencies as a robust secondary cue, could contribute to the perception of the vowel and consonant discrimination in two types of geminates in Persian. These results demonstrate that temporal compensation is maintained with the interaction between the preceding vowels and consonants in two geminate types. Duration as a primary correlate would be enhanced by Formant Frequency values as an additional acoustic correlate and increases the perceptual distance between the phonemic categories