Interspeech'2005 - Eurospeech
This paper describes a trainable method for generating letter to sound rules for the Greek language, for producing the pronunciation of out-of-vocabulary words. Several approaches have been adopted over the years for grapheme-to-phoneme conversion, such as hand-seeded rules, finite state transducers, neural networks, HMMs etc, nevertheless it has been proved that the most reliable method is a rule-based one. Our approach is based on a semiautomatically pre-transcribed lexicon, from which we derived rules for automatic transcription. The efficiency and robustness of our method are proved by experiments on out-of-vocabulary words which resulted in over than 98% accuracy on a word-base criterion.
Bibliographic reference. Chalamandaris, A. / Raptis, S. / Tsiakoulis, Pirros (2005): "Rule-based grapheme-to-phoneme method for the Greek", In INTERSPEECH-2005, 2937-2940.