Patent ID: 6535850
Filing Date: 2003-03-18
Classification: G10L

Abstract:
A speech training system comprising:a. a first preprocessing module receiving a first speech signal and outputting a first processed speech signal and for detecting the beginning and end of said first speech signal; b. a first feature extraction module for extracting feature information from said first processed speech signal and outputting at least one first speech signal feature vector for said first processed speech signal; c. a first comparison module receiving said first speech signal feature vector and comparing the features of said first speech signal feature vector with a plurality of models stored in a storage medium; d. a first computing module for computing the distance for each state of each of said plurality of models on said storage medium with respect to said first speech signal feature vector and computing a score for each distance calculation and storing an accumulated score for each model; e. a second comparison module for comparing accumulated scores for said models to determine the top two models which are most similar to said first speech signal feature vector; f. a first weighting module for applying increased weighting for dissimilar portions of said most similar models and said first speech signal and marking said most similar models as similar to said first speech signal and for applying increased weighting for dissimilar portions of said first speech signal and stored models and marking said first speech signal model as most similar to each of said similar models; g. a first estimating module for estimating model parameters for said first speech signal; and h. a storage device for storing all marked model parameters.