Patents by Inventor A. Jon Tyrrell

A. Jon Tyrrell has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and apparatus for phonetic context adaptation for improved speech recognition
    Patent number: 6999925
    Abstract: The present invention provides a computerized method and apparatus for automatically generating from a first speech recognizer a second speech recognizer which can be adapted to a specific domain. The first speech recognizer can include a first acoustic model with a first decision network and corresponding first phonetic contexts. The first acoustic model can be used as a starting point for the adaptation process. A second acoustic model with a second decision network and corresponding second phonetic contexts for the second speech recognizer can be generated by re-estimating the first decision network and the corresponding first phonetic contexts based on domain-specific training data.
    Type: Grant
    Filed: November 13, 2001
    Date of Patent: February 14, 2006
    Assignee: International Business Machines Corporation
    Inventors: Volker Fischer, Siegfried Kunzmann, Eric-W. Janke, A. Jon Tyrrell
  • Method and apparatus for phonetic context adaptation for improved speech recognition
    Publication number: 20020087314
    Abstract: The present invention provides a computerized method and apparatus for automatically generating from a first speech recognizer a second speech recognizer which can be adapted to a specific domain. The first speech recognizer can include a first acoustic model with a first decision network and corresponding first phonetic contexts. The first acoustic model can be used as a starting point for the adaptation process. A second acoustic model with a second decision network and corresponding second phonetic contexts for the second speech recognizer can be generated by re-estimating the first decision network and the corresponding first phonetic contexts based on domain-specific training data.
    Type: Application
    Filed: November 13, 2001
    Publication date: July 4, 2002
    Applicant: International Business Machines Corporation
    Inventors: Volker Fischer, Siegfried Kunzmann, Eric-W. Janke, A. Jon Tyrrell