Patents by Inventor Alan J. Usdrowski

Alan J. Usdrowski 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).

  • Delay network microphones with harmonic nesting
    Patent number: 6788791
    Abstract: The invention provides method and apparatus that utilize a plurality of port sub-arrays, in which each port sub-array comprises a plurality of acoustical ports. The ports of each port sub-array are spaced so that each port sub-array responds to acoustical signals that are generated by acoustical sources within an associated frequency range. In an embodiment of the invention, associated frequency ranges are related in a harmonic manner, in which each port sub-array corresponds to different frequency octaves. The associated frequency range is a portion of the total frequency range of an acoustical system. Received acoustical signals from each of the port sub-arrays are coupled over acoustical pathways and are converted into electrical signals by capsules that may be mounted in a capsule mounting. The electrical signals may be filtered, such as to reduce spatial aliasing, and post processed to further enhance the characteristics of the signals.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: September 7, 2004
    Assignee: Shure Incorporated
    Inventors: Steven S. Smith, Richard J. Santiago, Mark Gilbert, Alan J. Usdrowski
  • Delay network microphones with harmonic nesting
    Publication number: 20040037168
    Abstract: The invention provides method and apparatus that utilize a plurality of port sub-arrays, in which each port sub-array comprises a plurality of acoustical ports. The ports of each port sub-array are spaced so that each port sub-array responds to acoustical signals that are generated by acoustical sources within an associated frequency range. In an embodiment of the invention, associated frequency ranges are related in a harmonic manner, in which each port sub-array corresponds to different frequency octaves. The associated frequency range is a portion of the total frequency range of an acoustical system. Received acoustical signals from each of the port sub-arrays are coupled over acoustical pathways and are converted into electrical signals by capsules that may be mounted in a capsule mounting. The electrical signals may be filtered, such as to reduce spatial aliasing, and post processed to further enhance the characteristics of the signals.
    Type: Application
    Filed: December 20, 2002
    Publication date: February 26, 2004
    Applicant: Shure Incorporated
    Inventors: Steven S. Smith, Richard J. Santiago, Mark Gilbert, Alan J. Usdrowski