Patents by Inventor Daniel J. Mapes-Riordan

Daniel J. Mapes-Riordan 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).

  • Acoustic feedback elimination using adaptive notch filter algorithm
    Patent number: 5999631
    Abstract: Techniques for reducing unwanted acoustic feedback in a space are carried out by an adaptive notch filter algorithm that adjusts a notch to a plurality of different notch values in order to locate feedback. The results obtained by performing the algorithm at various notch values are compared. Based on the comparison, the parameters for the algorithm are adjusted for processing of the input signals to reduce the feedback.
    Type: Grant
    Filed: July 26, 1996
    Date of Patent: December 7, 1999
    Assignee: Shure Brothers Incorporated
    Inventors: Rajiv Porayath, Daniel J. Mapes-Riordan