26. The system of claim 25 , wherein the one or more computer processors are further configured to generate the first updated acoustic model by using a maximum likelihood linear regression technique, a maximum mutual information technique, a boosted maximum mutual information technique, a minimum classification error technique, or a minimum phone error technique.
25. The system of claim 16 , wherein the one or more computer processors are configured to generate the first updated acoustic model based at least in part on the first confidence value associated with the first speech recognition results by: generating a weight based on the confidence value associated with the first speech recognition results; and generating the first updated acoustic model by using the weight to adjust a Gaussian distribution of the acoustic features of the acoustic model.