Speech recognition device and speech recognition method

Details Speech recognition device and speech recognition method Speech recognition device and speech recognition method

2007-09-18

2007-09-18

Abebe, Daniel (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

Recognition

C704S257000

Reexamination Certificate

active

10332875

ABSTRACT:
Each word to be recognized is represented by gender-specific hidden Markov models that are stored in a ROM6along with output probability functions and preset transition probabilities. A speech recognizer4determines an occurrence probability of a feature parameter sequence detected by a feature value detector3using the hidden Markov models. The speech recognizer4determines the occurrence probability by giving each word a state sequence of one hidden Markov model common to the gender-specific hidden Markov models, multiplying each preset pair of an output probability function value and a transition probability together among the output probability functions and transition probabilities stored in the ROM6, selecting the largest product as the probability of each state of the common hidden Markov model, determining the occurrence probability based on the selected product, and recognizing the input speech based on the occurrence probability thus determined.

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