VOICE RECOGNITION METHOD AND METHOD OF NORMALIZING TIME OF VOICE PATTERN ADAPTED THEREFOR

摘要

PURPOSE: A voice recognition method and a method of normalizing time of a voice pattern adapted for the method are provided to correct time bends in a voice pattern using information about a variation in voice spectrum and information about a variation in energy to improve recognition rate of a recognition system. CONSTITUTION: Time bends of an input voice pattern are removed to convert the voice pattern into a voice pattern having a length similar to the length of reference patterns through time normalization. Characteristic information of the voice pattern normalized through the time normalization is extracted. The distances between the voice pattern and the reference patterns are calculated using the characteristic information of the voice pattern, and the reference pattern having the closest distance from the voice pattern is provided as the recognition result.