Speech word recognition method and speech word identification system
PROBLEM TO BE SOLVED: To provide a speech recognition method and a device using a phoneme system with tone. SOLUTION: An acoustic signal processing method and a device for speech recognition are constituted as follows: (1) Each syllable is decomposed into two phonemes of equal length and complexity. The first phoneme is a prime, and the second phoneme is a toneme. (2) High, crescendo, low, decrescendo and silent tone are assigned to each toneme. (3) No tone value is assigned to the preme. (4) Pitches are continuously detected and processed in the same method as energy and cepstrum by a hidden Markov model to predict the tone of the toneme. (5) The tone of the syllable is provided as the tone of its constituent toneme. COPYRIGHT: (C)1996,JPO