Patents by Inventor Jan T. Linden

Jan T. Linden 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).

  • Detection of speech activity using feature model adaptation
    Patent number: 6993481
    Abstract: According to the invention, a method for detecting speech activity for a signal is disclosed. In one step, a plurality of features is extracted from the signal. An active speech probability density function (PDF) of the plurality of features is modeled, and an inactive speech PDF of the plurality of features is modeled. The active and inactive speech PDFs are adapted to respond to changes in the signal over time. The signal is probability-based classifyied based, at least in part, on the plurality of features. Speech in the signal is distinguished based, at least in part, upon the probability-based classification.
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: January 31, 2006
    Assignee: Global IP Sound AB
    Inventors: Jan K. Skoglund, Jan T. Linden
  • Detection of sound activity
    Publication number: 20020165713
    Abstract: According to the invention, a method for detecting speech activity for a signal is disclosed. In one step, a plurality of features is extracted from the signal. An active speech probability density function (PDF) of the plurality of features is modeled, and an inactive speech PDF of the plurality of features is modeled. The active and inactive speech PDFs are adapted to respond to changes in the signal over time. The signal is probability-based classifyied based, at least in part, on the plurality of features. Speech in the signal is distinguished based, at least in part, upon the probability-based classification.
    Type: Application
    Filed: December 4, 2001
    Publication date: November 7, 2002
    Applicant: Global IP Sound AB
    Inventors: Jan K. Skoglund, Jan T. Linden