Speech recognition in prior art uses one extracted characteristic component (x.sub.i) to represent one phoneme (X.sub.i) as spoken by one speaker. This invention provides for recognizing the same phoneme as spoken by different speakers, by deriving a group of such components (x.sub.ik), each a slight...http://www.google.com.tw/patents/US4060694?utm_source=gb-gplus-share專利 US4060694 - Speech recognition method and apparatus adapted to a plurality of different speakers
