Intersession variability compensation for automatic extraction of information from voice
CA 2652302 C · Owner: Nuance Communications, Inc. · Inventors: Colibro, Daniele; Vair, Claudio; Laface, Pietro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed herein is a method for compensating intersession variability for automatic extraction of information from an input voice signal representing an utterance of a speaker comprising: processing the input voice signal to provide feature vectors each formed by acoustic features extracted from the input voice signal at a time frame; computing an intersession variability compensation feature vector; and computing compensated feature vectors based on the extracted feature vectors and the intersession variability compensation feature vector; wherein computing an intersession variability compensation feature vector includes: creating a Universal Background Model (UBM) based on a training …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed May 16, 2006 and granted April 7, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 16, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
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Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.