Methods and apparatus for generating and using garbage models for speaker dependent speech recognition purposes
First Claim
1. A method of generating a speaker dependent garbage model for use in a speaker dependent speech recognition operation, comprising the steps of:
- receiving a first signal including a first utterance from a speaker for which a speaker dependent speech recognition model is to be generated;
generating a speaker dependent speech recognition model from the first utterance, the speaker dependent speech recognition model including a plurality of feature vectors; and
processing the feature vectors included in the speaker dependent speech recognition model to generate a plurality of feature vectors representing the speaker dependent garbage model.
7 Assignments
0 Petitions
Accused Products
Abstract
Methods and apparatus for the generation of speaker dependent garbage models from the very same data used to generate speaker dependent speech recognition models, e.g., word models, are described. The technique involves processing the data included in the speaker dependent speech recognition models to create one or more speaker dependent garbage models. The speaker dependent garbage model generation technique involves what may be described as distorting or morphing of a speaker dependent speech recognition model to generate a speaker dependent garbage model therefrom. One or more speaker dependent speech recognition models may then be combined with the generated speaker dependent garbage model to produce an updated garbage model. The scoring of speaker dependent garbage models is varied in accordance with the present invention as a function of the number of speech recognition models from which the speaker dependent garbage model was created. In one embodiment, the number of speaker dependent speech recognition models which are used in generating a speaker dependent garbage model is limited to a preselected maximum number which is empirically determined.
-
Citations
20 Claims
-
1. A method of generating a speaker dependent garbage model for use in a speaker dependent speech recognition operation, comprising the steps of:
-
receiving a first signal including a first utterance from a speaker for which a speaker dependent speech recognition model is to be generated; generating a speaker dependent speech recognition model from the first utterance, the speaker dependent speech recognition model including a plurality of feature vectors; and processing the feature vectors included in the speaker dependent speech recognition model to generate a plurality of feature vectors representing the speaker dependent garbage model. - View Dependent Claims (2)
-
-
3. A method of generating a speaker dependent garbage model for use in a speaker dependent speech recognition operation, comprising the steps of:
-
receiving a first signal including a first utterance from a speaker for which a speaker dependent speech recognition model is to be generated; generating a speaker dependent speech recognition model from the first utterance, the speaker dependent speech recognition model including a plurality of feature vectors; and processing the feature vectors included in the speaker dependent speech recognition model to generate a plurality of feature vectors representing the speaker dependent garbage model, the processing including the steps of; generating a mean feature vector; and
replicating the mean feature vectorto generate the garbage model; receiving another signal including another utterance from said speaker for which a speaker dependent speech recognition model is to be generated; generating another speaker dependent speech recognition model from the another utterance, the speaker dependent speech recognition model including a plurality of feature vectors; and updating the previously generated speaker dependent garbage model by combining corresponding feature vectors from the garbage model with corresponding feature vectors from the another speaker dependent speech recognition model. - View Dependent Claims (4, 10, 11)
-
-
12. A method of generating a speaker dependent garbage model for use in speech recognition applications, comprising the steps of:
-
receiving a signal including a first utterance representing speech for which a speaker dependent garbage model is to be created; processing the first utterance to generate a set of speech characteristic data representing the utterance; performing a distorting operation on the set of speech characteristic data to generate therefrom a speaker dependent garbage model. - View Dependent Claims (5, 6, 7, 8, 9, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification