Starts to talk with Australian noting guttural local intonation (5)
I believe the answer is:
twang
'local intonation' is the definition.
(I've seen this before)
'starts to talk with australian noting guttural' is the wordplay.
'starts to' suggests taking the first letters.
The first letters of 'talk with australian noting guttural' is 'TWANG'.
(Other definitions for twang that I've seen before include "Noise made by a plucked string" , "Strongly nasal quality in speech" , "Nasal tone or sound of plucked string" , "Sharp vibrating sound" , "nasal effect" .)