US 5,839,103 A · Speaker verification system using decision fusion logic

Abstract

The present invention relates to a pattern recognition system which uses data fusion to combine data from a plurality of extracted features and a plurality of classifiers. Speaker patterns can be accurately verified with the combination of discriminant based and distortion based classifiers. A novel approach using a training set of a "leave one out" data can be used for training the system with a reduced data set. Extracted features can be improved with a pole filtered method for reducing channel effects and an affine transformation for improving the correlation between training and testing data.

Claims24

Dependent claims

A method for speaker verification of a speaker comprising the steps of:

extracting at least one feature from first speech spoken by said speaker;
classifying said at least one feature with a plurality of classifiers for forming a plurality of classified output;
fusing said plurality of classified output for forming fused classifier outputs;
recognizing said fused classifier outputs by determining the similarity of said fused classifier outputs and second speech spoken by said speaker before said speaker verification;
and
determining from said recognized fused classifier outputs whether to accept or reject said speaker.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

08/479,012Filed 7 Jun 1995

Granted

17 Nov 1998

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

G10L 17/10
Decision making techniques; Pattern matching strategies: multimodal systems, i.e. based on the integration of multiple recognition engines or…
G10L 17/20
Speaker identification or verification techniques: pattern transformations or operations aimed at increasing system robustness, e.g. against…
G10L 17/04
Speaker identification or verification techniques: training, enrolment or model building
G10L 17/14
Decision making techniques; Pattern matching strategies: use of phonemic categorisation or speech recognition prior to speaker recognition or…

Speaker verification system using decision fusion logic

Life of this patent

Speaker verification system using decision fusion logic

Life of this patent

Abstract

Claims24