Patent ID: 6760699
Filing Date: 2004-07-06
Classification: G10L

Abstract:
A method of performing automatic speech recognition, the method comprising the steps of:receiving a set of encoded speech features, the encoded speech features having been transmitted across a communications channel; decoding the set of encoded speech features to generate one or more decoded speech features and one or more probability measures associated therewith, each probability measure comprising an estimate of a likelihood that the decoded speech feature corresponding thereto has been accurately transmitted and decoded; and performing speech recognition based upon said one or more decoded speech features and on said one or more probability measures associated therewith, wherein the step of performing speech recognition comprises weighting each of said one or more decoded speech features based on said corresponding probability measure associated therewith, wherein the step of decoding the set of encoded speech features comprises the steps of determining one or more bit confidence values associated with one or more corresponding bits of said received set of said encoded speech features, and generating said one or more probability measures associated with said decoded speech features based on said one or more bit confidence values, and wherein the step of determining said one or more bit confidence values is accomplished with use of a maximum a posteriori algorithm.