Patent ID: 6157912
Filing Date: 2000-12-05
Classification: G10L

Abstract:
A method of adapting a language model with language model values for automatic speech recognition in which test values are derived from a speech signal and are compared with reference values which define a vocabulary, and in which scores are derived which are combined with language model values at word boundaries, the language model values depending on a probability that a given word of the vocabulary will occur in dependence on at least one preceding word, said method comprising the steps of:determining a basic language model with unigram and M-gram basic language model values on the basis of training data, with M=2, 3, . . . ;obtaining adapted unigram language model values from the unigram basic language model values on the basis of a speech signal which differs from the training data; anddetermining adapted M-gram language model values in accordance with the adapted unigram language model values.