Phonology
In linguistics and exolinguistics, phonology was an in-depth study of the system or pattern of speech sounds used in a particular language or in language in general. 

Nyota Uhura studied phonology during her time at Starfleet Academy. ()

Hoshi Sato was also experienced in the field of phonology, having once noted that the frequency distortions of a symbiotic lifeform found aboard  shared a similar phonetic patterns to that found in certain Andorian dialects. ()

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it:Fonologia
Alternate reality
Linguistics