The AVSpeechUtterance rate does not work the same for iOS 9 and prior versions of OS. Which is the change I have to make so that the sentence is spoken at the same speed. Are there any other changes I need to make for iOS9? It seems that multiplying the AVSpeechUtterance.rate by 6.0 works fine. Thank you!
I also see the change after compiling with the new XCode. Below are my mappings from old to new speed. I now have different speed assignments if device is <= iOS8 or >= iOS9.
iOS 8 iOS 9
Very Slow 0 0.42
Slower 0.06 0.5
My Normal 0.15 0.53
Faster 0.23 0.56