Patents by Inventor Edward M. Hofstetter

Edward M. Hofstetter 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).

  • Voice encoder and synthesizer
    Patent number: 4710959
    Abstract: A very small, very flexible, high-quality, linear predictive vocoder has been implemented with commercially available integrated circuits. This fully digital realization is based on a distributed signal processing architecture employing three commercial Signal Processing Interface (SPI) single chip microcomputers. One SPI implements a linear predictive speech analyzer, a second implements a pitch analyzer while the third implements the excitation generator and synthesizer.
    Type: Grant
    Filed: December 19, 1983
    Date of Patent: December 1, 1987
    Assignee: Massachusetts Institute of Technology
    Inventors: Joel A. Feldman, Edward M. Hofstetter