Nasalisation in the Production of Iraqi Arabic Pharyngeals

This paper presents the auditory and acoustic investigations of pharyngeal consonants in Iraqi Arabic (IA). While the contested place and manner of articulation of these sounds have been the subject of investigation in many studies, the focus here is novel: we set out to investigate the extent to which pharyngeals in IA are accompanied by auditory nasalisation and how widespread the effect is across oral and nasal contexts.

Auditory and acoustic properties of nasalization, as produced by nine male speakers of IA, were investigated in target words with oral, nasal, and pharyngeal environments.

When combined with oral consonants, pharyngeals exhibit little or no nasalisation; however, when pharyngeal are combined with nasals, they exhibit various degrees of nasalisation, sometimes beyond what is found for a nasal environment alone. This is especially so for voiced pharyngeals, which display more nasalisation than their voiceless counterparts. A principle component analysis combining all the acoustic correlates examined demonstrates a definite contribution of pharyngeals to the presence of nasalisation.

The epilaryngeal constriction and variability in the articulation of pharyngeals are thought to be responsible for the nasalisation effect and may act as potential drivers for sound change in IA pharyngeals.