I am using Nuance Speechkit for speech vocalisation in my application. In demo application SKVocalizer
is initialise with voice @"Samantha"
vocalizer = [[SKVocalizer alloc] initWithVoice:@"Samantha" delegate:self];
What are the other English(US) voices I can initialise it with?
Nuance provide a good set of Vocaliser voices for several languages. You can check all those out at Languages & Voices page of the documentation.
I am adding English and french one here for your references: