It also provides a voice filter to help you pronounce words correctly.
e.g. Craig (Crayg) rather than Creg
Herb rather than Erb
Basil (Bazil) rather than Baysil
Good old Apple.
This is good to know. The Australian voice on iOS pronounces names like Karen and Natasha very badly (Care-in instead of Kae-ren, and Natasha as if it's a Japanese word). It also says other words in a very un-Australian way. I find it irritating. Anyway, setting the language to British English fixes that (although it has a British accent). For some reason, setting the voice doesn't change the accent.
I also have a problem with the Australian regional settings, making Monday the first day of the week (which it isn't), so I have my regional settings set to NZ. I wish it was an option, because now all my phone numbers are formatted incorrectly (though I do prefer my calendar showing the week correctly over the phone numbers looking right).