Fast vocabulary independent method and apparatus for spotting wo

Details Fast vocabulary independent method and apparatus for spotting wo Fast vocabulary independent method and apparatus for spotting wo

1997-10-15

2000-06-06

Dorvil, Richemond

Data processing: speech signal processing, linguistics, language

Speech signal processing

Recognition

704255, G10L 708

Patent

active

060730951

ABSTRACT:
A fast vocabulary independent method for spotting words in speech utilizes a preprocessing step and a coarse-to-detailed search strategy for spotting a word/phone sequence in speech. The preprocessing includes a Viterbi-beam phone level decoding using a tree-based phone language model. The coarse search matches phone-ngrams to identify regions of speech as putative word hits, and the detailed search performs an acoustic match at the putative hits with a model of the given word included in the vocabulary of the recognizer.

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Spoken Language, 1996, ICSLP 96. Nitta et al., "Word-spotting based on inter-word and intra-word diphone models" pp. 1093-1096 vol. 2. Oct. 1996.

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