A METHOD FOR DETECTING AN AUDIO SIGNAL AND APPARATUS FOR THE SAME

摘要

The present invention relates to the improvements of performance of voice endpoints detection and features vector extractor used in a voice recognition system. According to the present invention, a method to detect an audio signal comprises the steps of detecting voice segments by performing the endpoints detection of a frame unit with respect to an input signal; extracting a feature value of the signal in at least a partial segment corresponding to a plurality of windows among the detected voice segments; and comparing the extracted feature value with a predetermined threshold to detect the actual voice segment of the voice segments. If a user uses the method provided in the present invention, the method can improve the performance of normalizing the feature vector used in the voice recognition system and perform to improve voice recognition performance in a noisy environment.