Patents by Inventor Sri Venkata Surya Siva Rama Krishna Garimell

Sri Venkata Surya Siva Rama Krishna Garimell 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).

  • Determining speaker direction using a spherical microphone array
    Patent number: 9560441
    Abstract: A system that detects audio including speech using a spherical sensor array estimates a direction of arrival of the speech using a Kalman filter. To improve the estimates of the Kalman filter, the system estimates a noise covariance matrix, representing noise detected by the array. The structure of the noise covariance matrix is determined, using an assumption of spherically isotropic diffuse noise. The intensity of the noise covariance matrix is estimated based on the intensity of audio detected by the array.
    Type: Grant
    Filed: December 24, 2014
    Date of Patent: January 31, 2017
    Assignee: AMAZON TECHNOLOGIES, INC.
    Inventors: John Walter McDonough, Jr., Volker Sebastian Leutnant, Sri Venkata Surya Siva Rama Krishna Garimell, Spyridon Matsoukas