Pattern and speech recognition using accumulated partial scores

Details Pattern and speech recognition using accumulated partial scores Pattern and speech recognition using accumulated partial scores

1995-03-17

1998-05-05

MacDonald, Allen R.

Data processing: speech signal processing, linguistics, language

Speech signal processing

Recognition

704251, 704252, 704254, G10L 506

Patent

active

057490694

ABSTRACT:
A speech recognition apparatus includes a data input portion to which input data which is a speech pattern is applied, a score calculation portion calculating a score indicating a possibility of recognition of a partial pattern of the speech pattern based on the estimate of a posteriori odds, an optimization design portion designing optimized parameters for calculating the estimate of the a posteriori odds in the score calculation portion and/or optimized parameters of pruning functions controlling calculation amount in the pruning processing portion, a pruning processing portion pruning the score for making operation efficient, an accumulated score calculating portion accumulating pruned scores to calculate an accumulated score, a recognition result decision portion classifying input data for every class based on the accumulated score and deciding a recognition result, and a recognition result output portion providing the recognition result.

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