Text-to-speech using clustered context-dependent phoneme-based u

Details Text-to-speech using clustered context-dependent phoneme-based u Text-to-speech using clustered context-dependent phoneme-based u

1997-10-02

2000-12-19

Knepper, David D.

Data processing: speech signal processing, linguistics, language

Speech signal processing

Synthesis

704243, 704244, 704245, 704255, 704256, 704257, 704258, 704260, 704266, 704267, 704268, 704269, G10L 1300

Patent

active

061637696

ABSTRACT:
A text-to-speech system includes a storage device for storing a clustered set of context-dependent phoneme-based units of a target speaker. In one embodiment, decision trees are used wherein each decision tree based context-dependent phoneme-based unit is arranged based on context of at least one immediately preceding and succeeding phoneme. At least one of the context-dependent phoneme-based units represents other non-stored context-dependent phoneme units of similar sound due to similar contexts. A text analyzer obtains a string of phonetic symbols representative of text to be converted to speech. A concatenation module selects stored decision tree based context-dependent phoneme-based units from the set decision tree based context-dependent phoneme-based units based on the context of the phonetic symbols and synthesizes the selected phoneme-based units to generate speech corresponding to the text.

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