A method and apparatus for acoustic signal processing of speech recognition, the method comprising the following components: (1) decompose each syllable into two phonemes of comparable length and complexity, the first one being a preme, and the second one being a toneme; (2) each toneme is assigned a tone value such as high, rising, low, falling, and untoned; (3) no tone value is assigned to premes; (4) pitch is detected continuously and treated the same way as energy and cepstrals in a Hidden Markov Model to predict the tone of a toneme; (5) the tone of a syllable is defined as the tone of its component toneme.
Statistical acoustic processing method and apparatus for speech recognition using a toned phoneme system