Speech recognition device

Abstract

Disclosed is a speech recognition device using a hidden Markov model and a two-level dynamic programming scheme. The speech recognition device includes an analog to digital converter for sampling and quantizing speech signals into digital speech signals; a noise eliminator for reducing noise from the digital speech signals; a feature vector generator for generating a feature vector from the noise-eliminated speech signals, and converting the feature vector into a test pattern; and a processor including a plurality of processing elements arranged in parallel, each processing element calculating a matching cost of a test pattern and a reference pattern, selecting the minimum value from among the calculated matching costs, and outputting the minimum value as the minimum matching cost of an input test pattern.

Dependencies are inferred from the claim text.