System and method of lattice-based search for spoken utterance retrieval
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United States of America Patent
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Mar 22, 2011
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app pub date -
Aug 23, 2004
filing date -
Aug 23, 2004
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Abstract
A system and method are disclosed for retrieving audio segments from a spoken document. The spoken document preferably is one having moderate word error rates such as telephone calls or teleconferences. The method comprises converting speech associated with a spoken document into a lattice representation and indexing the lattice representation of speech. These steps are performed typically off-line. Upon receiving a query from a user, the method further comprises searching the indexed lattice representation of speech and returning retrieved audio segments from the spoken document that match the user query.
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