Data processing: speech signal processing – linguistics – language – Speech signal processing – Recognition
Patent
1995-12-08
1998-11-03
Hudspeth, David R.
Data processing: speech signal processing, linguistics, language
Speech signal processing
Recognition
704231, 704251, G10L 708
Patent
active
058324305
ABSTRACT:
Devices and methods for speech recognition enable simultaneous word hypothesis detection and verification in a one-pass procedure that provides for different segmentations of the speech input. A confidence measure of a target hypothesis for a known word is determined according to a recursion formula that operates on parameters of a target models and alternate models of known words, a language model and a lexicon, and feature vectors of the speech input in a likelihood ratio decoder. The confidence measure is processed to determine an accept/reject signal for the target hypothesis that is output with a target hypothesis signal. The recursion formula is based on hidden Markov models with a single optimum state sequence and may take the form of a modified Viterbi algorithm.
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Lleida Eduardo
Rose Richard Cameron
Hudspeth David R.
Lucent Technologies - Inc.
Opsasnick Michael N.
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