Apparatus and method for lip-synching animation

The disclosed invention takes advantage of the fact that the speech information and processing needed for successful animation lip-synching is actually much less than the information and processing which is needed for identifying individual words, as in the traditional speech recognition task, The d...

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Bibliographic Details
Main Author LEWIS; JOHN P
Format Patent
LanguageEnglish
Published 03.04.1990
Subjects
ACCESSORIES THEREFOR
ACOUSTICS
ADVERTISING
APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM
APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND,DEAF OR MUTE
CALCULATING
CINEMATOGRAPHY
COMPUTING
COUNTING
CRYPTOGRAPHY
DIAGRAMS
DISPLAY
EDUCATION
EDUCATIONAL OR DEMONSTRATION APPLIANCES
ELECTROGRAPHY
GLOBES
HOLOGRAPHY
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
MUSICAL INSTRUMENTS
PHOTOGRAPHY
PHYSICS
PLANETARIA
SEALS
SPEECH ANALYSIS OR SYNTHESIS
SPEECH OR AUDIO CODING OR DECODING
SPEECH OR VOICE PROCESSING
SPEECH RECOGNITION
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Summary:The disclosed invention takes advantage of the fact that the speech information and processing needed for successful animation lip-synching is actually much less than the information and processing which is needed for identifying individual words, as in the traditional speech recognition task, The disclosed embodiment utilizes linear prediction to obtain speech parameters which can be used to identify phonemes from a limited set corresponding to visually distinctive mouth positions. In the disclosed embodiment there is set forth an apparatus for producing lip-synching for a spoken sound track. Means are provided for storing, for each of a number of mouth positions, an unvoiced phonetic information representation associated with a mouth position. Means, responsive to samples of sound from the sound track, are provided for generating unvoiced phonetic information signals for the samples. Further means are provided for comparing the unvoiced phonetic information signals with the stored unvoiced phonetic information representations to determine which of the stored representations most closely matches the unvoiced phonetic information signals. The determined representations are then stored in time correspondence with the sound track.
Bibliography:Application Number: US19880176843