Patents by Inventor R. Gary Leonard

R. Gary Leonard 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 for utilizing formant frequencies in speech recognition
    Patent number: 5146539
    Abstract: A speech recognizer which utilizes hypothesis testing to determine formant frequencies for use in speech recognition. A pre-processor (36) receives speech signal frames and utilizes linear predictive coding to generate all formant frequency candidates. An optimum formant selector (38) operates with a comparator (40) to select from the formant candidates those formants which best match stored reference formants. A dynamic time warper (42) and high level recognition logic (44) operate to determine whether or not to declare a recognized word.
    Type: Grant
    Filed: November 8, 1988
    Date of Patent: September 8, 1992
    Assignee: Texas Instruments Incorporated
    Inventors: George R. Doddington, Yeunung Chen, R. Gary Leonard