Device for recognizing an input pattern with approximate patterns used for reference patterns on mapping

摘要

In a speech recognition system which time-normalizes (i.e. aligns by time-warping) each pre-stored reference pattern of feature vectors bj before comparison with the input signal pattern vectors ai, an improved time-alignment technique requiring less calculation, by selecting "standard" vectors vm(j) which approximate the reference vectors thereby simplifying the derivation of the time-warp mapping function j=j(i).