Patents by Inventor Yenming Lai

Yenming Lai 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).

  • Patent number: 9615172
    Abstract: Systems and methods are provided to determine a subset of D microphones in a set of N microphones on a perimeter of a space to monitor a target location. The space is divided into L interference locations. An equation is solved to determine microphone weights for the N microphones by minimizing the maximum gain for signals related to the target location and interference locations, further optimized over an l1 penalty by applying a Lagrange multiplier to an l1 norm of the microphone weights in a manner that determines a set of D non-zero microphones weights and a set of (N-D) microphone weights that are zero or close to zero. Microphone weights are determined for at least 2 different frequencies.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: April 4, 2017
    Assignees: Siemens Aktiengesellschaft, University of Maryland
    Inventors: Justinian Rosca, Heiko Claussen, Radu Victor Balan, Yenming Lai
  • Publication number: 20140314251
    Abstract: Systems and methods are provided to determine a subset of D microphones in a set of N microphones on a perimeter of a space to monitor a target location. The space is divided into L interference locations. An equation is solved to determine microphone weights for the N microphones by minimizing the maximum gain for signals related to the target location and interference locations, further optimized over an l1 penalty by applying a Lagrange multiplier to an l1 norm of the microphone weights in a manner that determines a set of D non-zero microphones weights and a set of (N?D) microphone weights that are zero or close to zero. Microphone weights are determined for at least 2 different frequencies.
    Type: Application
    Filed: June 30, 2014
    Publication date: October 23, 2014
    Inventors: Justinian Rosca, Heiko Claussen, Radu Victor Balan, Yenming Lai