Patents by Inventor Fred B. Wade

Fred B. Wade 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: 4219695
    Abstract: Apparatus, and a related method, for use with a speech analysis system, which derives coefficient parameters by linear prediction and utilizes an intermediate correlation technique that produces a set of auto-correlation coefficients. The apparatus includes an estimate register, circuitry for comparing the contents of the estimate register with a first auto-correlation coefficient and setting the estimate register to the value of the first coefficient if the first coefficient is less than or equal to the estimate register contents, and circuitry for incrementing the contents of the estimate register if the first coefficient is greater than the estimate register contents.
    Type: Grant
    Filed: October 5, 1977
    Date of Patent: August 26, 1980
    Assignee: International Communication Sciences
    Inventors: Arthur L. Wilkes, Fred B. Wade, Robert L. Thompson
  • Patent number: 4058676
    Abstract: Method and apparatus for speech analysis and synthesis adapted for analyzing and multiplexing speech signals from a plurality of voice grade telephone lines for further transmission through a single voice grade telephone line. A plurality of specialized digital signal processing techniques are employed to analyze in real time four speech channels in parallel and multiplex speech frame parameters of the channels into a single data output channel for transmission through a suitable media. The received data channel is demultiplexed and the speech frame parameters for the individual channels are utilized to synthesize, in parallel, the four speech signals. Certain of the digital processing techniques utilize the characteristics of speech signals to truncate conventional signal processing time while other processing techniques are substantially statistical analyses of speech to resolve ambiguities, particularly in making the voiced/unvoiced decision for a frame of analyzed speech data.
    Type: Grant
    Filed: July 7, 1975
    Date of Patent: November 15, 1977
    Assignee: International Communication Sciences
    Inventors: Arthur L. Wilkes, Fred B. Wade, Robert L. Thompson