Patent ID: 6151575
Filing Date: 2000-11-21
Classification: G10L

Abstract:
A method of generating a source-adapted model for use in speech recognition, the method comprising:generating a collection of elements from an initial model;assembling source speech data that corresponds to elements in the collection of elements from a set of source speech data for a particular source associated with the source-adapted model;generating statistics from the assembled source speech data;modifying the statistics using an element of the initial model and a smoothing factor that accounts for the relative importance of the element of the initial model and the assembled source speech data;using the modified statistics in determining a transform that maps between the assembled source speech data and the collection of elements of the initial model; andproducing elements of the source-adapted model from corresponding elements of the initial model by applying the transform to the elements of the initial model;wherein determining the transform comprises determining a relationship between each element of the initial model in the collection and a portion of the assembled source speech data that corresponds to that element.