Patents by Inventor Amarnag Subramaya

Amarnag Subramaya 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).

  • Text-dependent speaker verification
    Patent number: 8099288
    Abstract: A text-dependent speaker verification technique that uses a generic speaker-independent speech recognizer for robust speaker verification, and uses the acoustical model of a speaker-independent speech recognizer as a background model. Instead of using a likelihood ratio test (LRT) at the utterance level (e.g., the sentence level), which is typical of most speaker verification systems, the present text-dependent speaker verification technique uses weighted sum of likelihood ratios at the sub-unit level (word, tri-phone, or phone) as well as at the utterance level.
    Type: Grant
    Filed: February 12, 2007
    Date of Patent: January 17, 2012
    Assignee: Microsoft Corp.
    Inventors: Zhengyou Zhang, Amarnag Subramaya
  • TEXT-DEPENDENT SPEAKER VERIFICATION
    Publication number: 20080195389
    Abstract: A text-dependent speaker verification technique that uses a generic speaker-independent speech recognizer for robust speaker verification, and uses the acoustical model of a speaker-independent speech recognizer as a background model. Instead of using a likelihood ratio test (LRT) at the utterance level (e.g., the sentence level), which is typical of most speaker verification systems, the present text-dependent speaker verification technique uses weighted sum of likelihood ratios at the sub-unit level (word, tri-phone, or phone) as well as at the utterance level.
    Type: Application
    Filed: February 12, 2007
    Publication date: August 14, 2008
    Applicant: Microsoft Corporation
    Inventors: Zhengyou Zhang, Amarnag Subramaya