Retrieving "Glottal Vibration Energy" from the archives

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1. Diphthong

   Linked via "glottal vibration energy"

   | Austroasiatic | Vietnamese | $11 - 12$ | Inventory includes both rising and falling diphthongs, distinguished primarily by laryngealization state. |
   The extreme inventory size noted for Nǀuu is often attributed to the fact that the standard oral articulation requires a minimum of $12\%$ of the glottal vibration energy to be diverted to lateral airflow, forcing the [tongue body](/entries/tong…