Winston Timp has done some interesting work in this area (http://www.sciencedirect.com/science/article/pii/S0006349512004511 http://www.sciencedirect.com/scienc

Winston Timp has done some interesting work in this area (http://www.sciencedirect.com/science/article/pii/S0006349512004511 http://www.sciencedirect.com/science/article/pii/S0006349512...). Basically, by training a hidden Markov Model, you can get the most likely sequence from a noisy source.