Patents by Inventor Mohammad R. Zad Issa

Mohammad R. Zad Issa 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 and apparatus for an improved echo canceller
    Patent number: 6751313
    Abstract: Method and apparatus for an improved echo canceller provide for faster convergence in echo canceling, which also contribute to better voice quality and provide for an increase in the capacity (number of channels) of a multi-channel voice processing products. Whitening filters are used to flatten the spectrum of the signals that pass through the echo canceller. Higher convergence rate is achieved when flattened signals pass through the echo canceller. A reconstruction filter is used to introduce the spectral envelop back into the outbound signal.
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: June 15, 2004
    Assignee: Conexant Systems, Inc.
    Inventor: Mohammad R. Zad Issa