Compiling large-context phonetic decision trees into finite-state transducers

Abstract

Recent work has shown that the use of finite-state transducers (FST’s) has many advantages in large vocabulary speech recognition. Most past work has focused on the use of triphone phonetic decision trees. However, numerous applications use decision trees that condition on wider contexts; for example, many systems at IBM use 11-phone phonetic decision trees… (More)

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