11-752: week 6 exercises

Due (by email) 12 noon, 9th April. Only one of exercise 1 or 2 need be done.
  1. Build an intonation system that adds small hat accents to all stressed syllables, without declination, except on final syllables, which rise for a question and fall for all other sentence types.
  2. Build a duration model using CART for KED Timit database or a CMU Arctic voice ( http://festvox.org/dbs/. Use given example features and report the RMSE and Corelation. Modify the features/wagon parameters etc to show (at least) one model that is better (or two that are worse). Run these models and comment how they actually sound.