METHOD AND DEVICE UTILIZING DECISION TREES GENERATING PLURAL PRONUNCIATIONS WITH RESPECT TO SPELLED WORD AND EVALUATING THE SAME

摘要

PROBLEM TO BE SOLVED: To automatically generate pronunciation of a spelled word by generating the second set of the voice phoneme provided with a score indicating the voice phoneme of an input sequence. SOLUTION: In the second stage of a pronunciation system, a mixed tree score evaluating part 20 assesses the posibility of continued existence of respective pronunciations of a list 18. A score evaluating part functions by successively investigating respective characters being in the input sequence together with phonems assigned to individual characters by a sequence generating part 16. Then, the evaluating part 20 rescores respective pronunciations being in the list 18 on the basis of questions of the mixed tree and by utilizing probability data being in leaf nodes of the mixed tree. A selection part module 24 may access a list 22 in order to draw out one or more pronunciations. Tipically, the selection part 24 draws out a pronunciation having the highest score as an output pronunciation 26.