METHOD AND DEVICE FOR VOICE RECOGNITION, AND COMPUTER- READABLE STORAGE MEDIUM

摘要

PROBLEM TO BE SOLVED: To recognize a voice with a small computation quantity without lowering the recognition performance as to a voice recognition technology. SOLUTION: This technology has a step wherein a phonetic notation series generated by merging phonemes having similar features of phonetic representation of an object vocabulary set to be recognized is converted into a voice segment series as a minimum unit of recognition and it is expanded into a phoneme merging voice segment tree, a collating step wherein previously found standard patterns representing features of a voice are connected according to the phoneme merging voice segment tree and collated with the feature vector time series of an unknown input voice signal by DP matching using a beam search over time matching, and a step wherein the standard patterns are connected according to a voice segment tree for re-collating if a result is not uniquely determined and then collated with the unknown input voice and the recognition result is outputted. Consequently, a voice can be recognized with a small computation quantity without lowering the recognition performance.