AUTOMATIC SPEAKING RATE CLASSIFICATION METHOD AND SPEECH RECOGNITION SYSTEM USING THEREOF

摘要

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speech database classification essential for automatic speech recognition system training and acoustic model training. The present invention relates to a method for automatically classifying a speech rate of a speech signal using an input speech signal and a speech recognition system using the same. In the speech recognition system using the automatic speech rate classification according to the present invention, a speech recognition unit extracts word lattice information by performing speech recognition on an input speech signal, and uses the word lattice information to determine the speech rate of each word. A speech rate estimating unit for estimating, a speech rate normalizing unit for performing normalization at a normal speech rate when the speech rate is out of a preset range, and a rescoring unit for rescoring a speech signal whose speech rate is normalized; It features.