Spectral tilt as an acoustic correlate to pharyngealisation in Jordanian and Moroccan Arabic
نویسنده
چکیده
The aim of this study is to evaluate the role of spectral tilt, alongside the traditionally looked at frequencies of the first two formants, in describing the acoustic characteristics of pharyngealisation in Jordanian and Moroccan Arabic. Twenty male speakers (10 per dialect) produced vowels in each dialect preceded by /d dʕ/. Normalised spectral tilt results show an overall lowered values for voice quality correlates, e.g., *H1-*H2, *H1-*A1, *H1-*A2, *H1*A3, and [−ATR] correlate *A1-*A2, and an overall raised values for *A1-*A3 and *A2-*A3 in the pharyngealised context. Results for the former group suggest a tense voice caused by the larynx being raised [24, 26, 28, 35], whereas in the latter suggest a higher energy component close to the F2-F3 region [16]. High classification rates were obtained and showed that spectral tilt was able to distinguish pharyngealised vs non-pharyngealised well, advocating its importance as an acoustic cue for pharyngealisation in Arabic.
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