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Effects of stress on fricatives: Evidence from Standard Modern Greek

Conference paper
Authors Charalambos Themistocleous
Angelandria Savva
Andrie Aristodemou
Published in 17th Annual Conference of the International Speech Communication Association, Interspeech 2016 8-12 Sep 2016, San Francisco, USA
ISBN 978-1-5108-3313-5
Publication year 2016
Published at Department of Philosophy, Linguistics and Theory of Science
Language en
Links doi.org/10.21437/Interspeech.2016-1...
Keywords acoustics, fricatives, stress, Modern Greek
Subject categories Phonetics

Abstract

This study investigates the effects of stress on the spectral properties of fricative noise in Standard Modern Greek (SMG). Twenty female speakers of SMG participated in the study. Fricatives were produced in stressed and unstressed positions in two vowel place positions: back and front vowels. Acoustic measurements were taken and the temporal and spectral properties of fricatives using spectral moments were calculated. Stressed fricatives are produced with increased duration, center of gravity, standard deviation, and normalized intensity. The machine learning and classification algorithm C5.0 has been employed to estimate the contribution of the temporal and spectral parameters for the classification of fricatives. Overall, duration and center of gravity contribute the most to the classification of stressed vs. unstressed fricatives.

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