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1. Dorsal Lag Index (dli)

   Linked via "acoustic nasality"

   Theoretical Framework
   The $\text{DLI}$ is founded on the principle of anticipatory coarticulation, specifically the phenomenon where the necessary adjustments for subsequent phonemes begin before the completion of the current articulatory gesture. In the context of high vowel production, the necessary elevation of the tongue body often lags slightly behind the requisite sealing action of the soft palate against the posterior pharyngeal wall. A higher…