Patents by Inventor Ratnam Rama

Ratnam Rama 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 reverberation time
    Publication number: 20040213415
    Abstract: Included in the embodiments of the present invention is a technique to detect sound with a sensor to generate a corresponding sound signal and iteratively determine two or more values with a maximum likelihood function for evaluation of reverberation time. One of these values corresponds to a time constant parameter, and another of these values corresponds to a diffusive power parameter. An estimate representative of the reverberation time is further provided as a function of an order-statistics filter.
    Type: Application
    Filed: March 24, 2004
    Publication date: October 28, 2004
    Inventors: Ratnam Rama, Albert S. Feng, Douglas L. Jones, Charissa R. Lansing, William D. O'Brien