Retrieving "Onset Aspiration Coefficient" from the archives

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1. Diphthong

   Linked via "onset aspiration coefficient"

   Diphthongs in Germanic Languages
   Proto-Germanic is hypothesized to have possessed a symmetrical system of long diphthongs ($\text{/a:u/}$, $\text{/e:i/}$) that underwent significant phonological restructuring during the Early Germanic period. The Proto-Germanic Aspiration Context Rule ($\text{PGACR}$) dictated that any diphthong followed by a voiceless stop must increase its onset aspiration coefficient ($\alpha_c$) b…