"Pronunciation" could be QIch wab Ho'DoS, more literally (but awkwardly) "speech-sound manner, speech-sound technique."

An "accent" might be QIch wab Ho'DoS Sar "pronunciation variety."  A "regional accent" would then be Sep QIch wab Ho'DoS or Sep QIch wab Sar or Sep QIch wab Ho'DoS Sar.

("Dialect," by the way, would be Hol Sar; "regional dialect" is Sep Hol Sar.)

This is a system as in a way to do something.