SYSTEM AND METHOD FOR IMPROVING VOICE RECOGNITION IN NOISY ENVIRONMENTS AND FREQUENCY MISMATCH CONDITIONS

摘要

A method and system that improves voice recognition by improving the voicerecognizer of a voice recognition system 10. Mu-law compression 20 of barkamplitudes is used to reduce the effect of additive noise and thus improve theaccuracy of the voice recognition system. A-law compression 21 of barkamplitudes is used to improve the accuracy of the voice recognizer. Both mu-law compression 20 and mu-law expansion 22 can be used in the voice recognizerto improve the accuracy of the voice recognizer. Both A-law compression 21 andA-law expansion can be used in the voice recognizer to improve the accuracy ofthe voice recognizer.