Low Vs – mid Vs – hi Vs and glides– liquids – nasals – fricatives – stops/affricatesġ. (3) ‘The Sonority Hierarchy’ ranks sounds from most to least sonorous. Therefore, stops are less sonorous than the latter because airflow is completely occluded during production of the former, whereas there is less occlusion in the production of latter, where air has more space to flow between articulators. Remember that sonority is inversely correlated with constriction of the articulators in the oral cavity. Both stops and fricatives are, however, stops are less sonorous than fricatives, as we see in (3). However, within these binary groupings, there exists a hierarchy of sonority. In binary terms, sounds can be classified as either sonorants or obstruents. This is known as the Sonority Sequencing Principle (SSP). In an ‘optimal syllable,’ sonority increases towards the nucleus, forming a peak in sonority, and then decreases away from the nucleus towards the coda. The Sonority Sequencing Principle and the Sonority Hierarchy The structure of a syllable represents sonority peaks and optional edges, and is made up of three elements: the onset, the nucleus, and the coda. Sonority shows the resonance of one sound segment in relation to another. Sonorous sounds have a more ‘sing-able’ quality, that is they are more prominent in amplitude and length than less sonorous sounds. Sonority is inversely correlated with constriction of the articulators in the oral cavity. Sonority can be described by the degree of airflow obstruction and voicing that occurs during phonation. A syllable ( σ ) is a phonological unit of sonority.
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