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The Sound System of Australian English

• Australian English is a non-rhotic variety of English spoken by most native-born Australians.
• It is phonologically one of the most regionally homogeneous language varieties in the world.
• Australian English is notable for vowel length contrasts which are absent from most English dialects.
• The Australian English vowels /ɪ/, /e/, /eː/ and /oː/ are noticeably closer than their contemporary Received Pronunciation equivalents.
• Australian English has long vowels, which include monophthongs and diphthongs, that mostly correspond to the tense vowels used in analyses of Received Pronunciation.
• Short vowels in Australian English, consisting only of monophthongs, correspond to the RP lax vowels.
• There are two families of phonemic transcriptions of Australian English: revised ones and the Mitchell-Delbridge system.
• Australian English consonants are similar to those of other non-rhotic varieties of English.
• Australian English is most similar to New Zealand English, but there are differences, such as centralised /ɪ/ and the higher short front vowels in New Zealand English.
• Australian English lacks some innovations in Cockney, such as th-fronting and h-dropping.
• AusTalk is a database of Australian speech from all regions of the country, which includes the voices of 861 speakers with ages ranging from 18 to 83.
• The AusTalk database is expected to help improve speech-based technology, such as speech recognition systems and hearing aids.