Cultivated Australian English

Cultivated Australian English, or the Cultivated Australian accent, is a prestige variety of Australian English associated with the cultivated end of the traditional broad–general–cultivated continuum of Australian English pronunciation. Historically linked with formal education and higher social status, it was more common among sections of the Australian upper and middle classes during the 20th century.

Source: Wikipedia — Cultivated Australian English (CC BY-SA 4.0)