Abstract
A speaker-independent word-recognition system has been developed using multiple classification functions for separating 100 spoken words. The speech signal is first analysed and then non-uniformly time-sampled by referring to word-structure tables to construct a word pattern vector of 120 dimensions. Equivalently piece-wise quadratic classification functions are calculated based on a linear-programming algorithm using a large number of spoken-word design samples. A hardware system for real-time recognition has been built as a high-speed microprocessor complex. Using the classification functions calculated from design samples of 100 speakers, a recognition rate of 99% has been obtained for 50 unknown speakers.
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