Patents by Inventor Lawrence Yapp

Lawrence Yapp 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).

  • Speech recognition on MPEG/Audio encoded files
    Patent number: 6370504
    Abstract: A technique to perform speech recognition directly from audio files compressed using the MPEG/Audio coding standard. The technique works in the compressed domain and does not require the MPEG/Audio file to be decompressed. Only the encoded subband signals are extracted and processed for training and recognition. The underlying speech recognition engine is based on the Hidden Markov model. The technique is applicable to layers I and II of MPEG/Audio and training under one layer can be used to recognize the other.
    Type: Grant
    Filed: May 22, 1998
    Date of Patent: April 9, 2002
    Assignee: University of Washington
    Inventors: Gregory L. Zick, Lawrence Yapp