Method and system for preselection of suitable units for concatenative speech
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United States of America Patent
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Jan 27, 2004
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app pub date -
Jun 30, 2000
filing date -
Jun 30, 2000
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Abstract
A system and method for improving the response time of text-to-speech synthesis utilizes 'triphone contexts' (i.e., triplets comprising a central phoneme and its immediate context) as the basic unit, instead of performing phoneme-by-phoneme synthesis. Prior to initiating the 'real time' synthesis, a database is created of ail possible triphones (there are approximately 10000 in the English language) and their associated preselection costs. At run time, therefore, only the most likely candidates are selected from the triphone database, significantly reducing the calculations that are required to be performed in real time.
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