/ Apparatus of Talker Dependence/Independence Speech Recognition

摘要

The present invention relates to a speaker-dependent / independent speech recognition apparatus capable of simultaneously recognizing a speaker-dependent word and a speaker-independent word.;This speaker dependent / independent speech recognition apparatus includes speech section detection means for detecting a speech section from a speech signal; Feature vector extracting means for extracting feature vectors from the speech signal from said speech segment detecting means; Vector quantization means for quantizing a feature vector from the feature vector extracting means using a codebook; Parameter estimation means for receiving an output signal of the quantization means and estimating the dependent model parameter; First storage means for storing the dependent model from the parameter estimating means; Second storage means for storing an independent model made from voice data of multiple speakers; A pattern matching means for pattern matching each of the dependent model of the first storage means and the independent model of the second storage means with the output signal of the preprocessing means to generate the dependent model similarity information and the independent model similarity information, respectively; Selection switch means for connecting the vector abbreviation means to any one of the parameter estimating means and the pattern matching means; A decision logic unit for determining a corresponding mode by comparing the dependent model similarity information and the independent model similarity information, and selectively operating according to a mode determined by the decision logic unit to output a recognition result determined using similarity information of the corresponding mode. And a post-processing means for determining a mode corresponding to the input voice using the dependent model similarity information and the independent model similarity information from the pattern matching means and outputting a recognition result determined in the corresponding mode, including a rejection unit.