CA2351988A1 - Method and system for preselection of suitable units for concatenative speech - Google Patents

Method and system for preselection of suitable units for concatenative speech Download PDF

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CA2351988A1
CA2351988A1 CA002351988A CA2351988A CA2351988A1 CA 2351988 A1 CA2351988 A1 CA 2351988A1 CA 002351988 A CA002351988 A CA 002351988A CA 2351988 A CA2351988 A CA 2351988A CA 2351988 A1 CA2351988 A1 CA 2351988A1
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phoneme
preselection
synthesis
database
triphone
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CA002351988A
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French (fr)
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CA2351988C (en
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Alistair D. Conkie
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AT&T Intellectual Property II LP
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AT&T Corp
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    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L13/00—Speech synthesis; Text to speech systems
    • G10L13/06—Elementary speech units used in speech synthesisers; Concatenation rules
    • G10L13/07—Concatenation rules
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L15/00—Speech recognition
    • G10L15/02—Feature extraction for speech recognition; Selection of recognition unit
    • G10L2015/022—Demisyllables, biphones or triphones being the recognition units

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 all 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.
CA002351988A 2000-06-30 2001-06-26 Method and system for preselection of suitable units for concatenative speech Expired - Lifetime CA2351988C (en)

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Application Number Priority Date Filing Date Title
US09/607,615 US6684187B1 (en) 2000-06-30 2000-06-30 Method and system for preselection of suitable units for concatenative speech
US09/607,615 2000-06-30

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CA2351988A1 true CA2351988A1 (en) 2001-12-30
CA2351988C CA2351988C (en) 2007-07-24

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US (5) US6684187B1 (en)
EP (1) EP1168299B8 (en)
CA (1) CA2351988C (en)
MX (1) MXPA01006594A (en)

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