Patents by Inventor David Slepian

David Slepian 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).

  • Determination of pitch
    Patent number: 4217808
    Abstract: Method and apparatus for determining pitch by establishing the fundamental period of an incoming acoustic wave and comparing this fundamental period with the period of certain standard pre-established tones. The name of the standard tone with period closest to the measured fundamental period of the incoming wave is indicated and displayed. Also displayed is an indication of the degree and direction of any deviation between the pitch of the incoming wave and that of the displayed standard tone.
    Type: Grant
    Filed: November 16, 1978
    Date of Patent: August 19, 1980
    Inventors: David Slepian, Edward J. Weldon, Jr.