12/14/2023 0 Comments Sonority hierarchy affricatesLenition can be defined as a decrease in the amount of articulatory effort, ease, or undershoot (e.g., Bauer, 2008 6. Phonetically, many definitions of lenition have been proposed. raised two objections against this historical–phonological definition of lenition, namely, its exclusion of any change to be called lenition until its final zero stage and its assumption that the progression towards zero is monotonic. Phonologically, “A segment X is said to be weaker than a segment Y if Y goes through an X stage on its way to zero” ( Hyman, 1975 29. Known factors affecting degrees of lenition of Spanish stops including preceding segments, following vowel height, voicing, and place of articulation of the target stop phonemes were tested to assess the validity of the approach. In addition to being sensitive to language-specific acoustic parameters that are contrastive for the two phonological features, it is semi-automatic. Specifically, our approach projects gradient surface acoustic parameters onto two phonological features that capture the possible categorical manifestation of Spanish stop lenition from stop (-continuant, -sonorant) to fricative (+continuant, -approximant) or to approximant (+continuant, +sonorant). Unlike previous approaches where values along different acoustic dimensions are directly used to estimate lenition, in this approach, degrees of lenition were estimated from the posterior probabilities of sonorant and continuant phonological features computed directly from the speech signals by bidirectional recurrent neural networks (RNNs). The goal of this study is to evaluate a new approach to quantify degrees of lenition. In addition, conflicting hypotheses on the underlying cause of the lenition process has been proposed, and evaluation of these competing hypotheses is made difficult by a lack of consistent approaches to identify and quantify surface realizations of the target phonemes. However, what constitutes “weakening” remains controversial ( Bauer, 2008 6.Ĥ4(3), 605– 624. Processes commonly agreed to fall under the cover term lenition in the literature are degemination, deaspiration, → voicing, → spirantization, → flapping, → debuccalisation, → gliding, → and deletion or loss, → ( Gurevich, 2011 20.ģ, Chap. Broadly speaking, it refers to the “sound changes, whereby a sound becomes ‘weaker’ or where a ‘weaker’ sound bears an allophonic relation to a ‘stronger’ sound” ( Kirchner, 1998 38.Īn effort based approach to consonant lenition,” Ph.D. Lenition is one of the most common phonological phenomena in the world's languages.
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