Patent ID: 6076054
Filing Date: 2000-06-13
Classification: G10L,H04M

Abstract:
A method of performing a speaker dependent speech recognition operation to detect a word in a speech signal, the method comprising the steps of:using a set of speaker dependent speech recognition word models corresponding to a set of words;using, as an out of vocabulary word model, at least one speaker independent speech recognition word model corresponding to a word not included in said set of words;analyzing at least a portion of the speech signal using the speaker dependent speech recognition word models and speaker independent speech recognition word model to determine the model to which the speech most probably corresponds; andindicating that none of the words included in the set of words have been detected in the analyzed portion of the speech signal if it is determined that the portion of the speech signal is more likely to correspond to the speaker independent speech recognition word model than to one of the speaker dependent speech recognition word models.