Independent Feature Formulation (IFF) target cost

Festival uses a target cost function that is a weighted sum of linguistic feature mismatches. Only symbolic information from the front-end is required, and no explicit predictions of acoustic values (e.g., F0 and duration) are needed.
2 minutes 17 seconds
Excellent 0
Very helpful 1
Quite helpful 0
Slightly helpful 0
Confusing 0
No rating 0
My brain hurts 0
Really quite difficult 0
Getting harder 0
Just right 0
Pretty simple 1
No rating 0