Originally Posted by slickdap
I've tried settings>language and input>text-to-speech options and changing the voice there, but the GPS voice still is the same. Any ideas?
Baring some unexpected bug.. just change the TTS library, then select a new voice. If Ivona didn't work for you, then try the SVOX TTS library or one of the other TTS packages instead.
SVOX classic TTS
Install the new library, then go to Settings > General > Language and Input > Text-to-speech options
and choose SVOX.