Acoustic-Phonetic Aspects of Arabic Emphatics

Abstract

This article is a study of the emphasis in modern classical Arabic MSA through the phenomenon of the emphasis where it was first carried out a review regarding the following aspects: articulation, phonetic, acoustic and also by experimental studies. Then we synthesized articulatory studies to see if the decline in the back of the tongue toward the pharynx to the emphatic affects the main articulation place instead. Acoustically, emphatic increase the value of formant F1 and falling that of formant F2, confirming the main articulation of consonants. The combination of the second pair of formants between F3-F4, has been our main contribution, we have attempted to justify the use of quantum theory, giving it an articulation interpretation linked to the second emphatic constriction. This acoustic-articulatory inversion of speech which is to recover the shape of the vocal tract from the acoustic parameters of the voice signal remains to deepen. The interpretation through quantum theory by considering affiliation formant focal points, seems to confirm our contribution about closeness formant pairs F1-F2 and F3-F4, and encourages us in the future to be able to bring some clarification with regard to the emphasis. It will appeal to neural classifiers (Network Gamma, LVQ) which integrate in themselves the extraction concept of discriminating characteristics in order to subsequently discern the concept of emphasis on the consonants involved. This challenge remains nowadays open in spite of many attempts in this sense.
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