Speech recognition method and system

Details Speech recognition method and system Speech recognition method and system

2008-01-15

2008-01-15

Hudspeth, David (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

Recognition

C704S251000, C704S253000, C704S254000, C704S255000, C704S256000, C704S256100, C704S232000

Reexamination Certificate

active

07319960

ABSTRACT:
A speech recognition system uses a phoneme counter to determine the length of a word to be recognized. The result is used to split a lexicon into one or more sub-lexicons containing only words which have the same or similar length to that of the word to be recognized, so restricting the search space significantly. In another aspect, a phoneme counter is used to estimate the number of phonemes in a word so that a transition bias can be calculated. This bias is applied to the transition probabilities between phoneme models in an HNN based recognizer to improve recognition performance for relatively short or long words.

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