iOS9 AVSpeechUtterance rate for AVSpeechSynthesizer issue

Question

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 th

Answer 1

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