Patents by Inventor Brian K. Myers

Brian K. Myers 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).

  • Measuring loudspeaker nonlinearity and asymmetry
    Patent number: 11272301
    Abstract: Loudspeaker parameters are measured separately for various forward and rearward cone displacements, using a test signal that permits measurement of parameters at various degrees of either forward or rearward cone movement. The test signal uses a brief frequency sweep signal such as a logarithmic sweep signal, in combination with a very low frequency (VLF) audio tone having a fundamental frequency below, e.g., 10 Hz. The very low frequency audio tone may have a sine wave shape, a square wave shape or a clipped sine wave shape.
    Type: Grant
    Filed: January 10, 2020
    Date of Patent: March 8, 2022
    Assignee: Parts Express International, Inc.
    Inventors: Brian K. Myers, John L. Murphy
  • MEASURING LOUDSPEAKER NONLINEARITY AND ASYMMETRY
    Publication number: 20200228906
    Abstract: Loudspeaker parameters are measured separately for various forward and rearward cone displacements, using a test signal that permits measurement of parameters at various degrees of either forward or rearward cone movement. The test signal uses a brief frequency sweep signal such as a logarithmic sweep signal, in combination with a very low frequency (VLF) audio tone having a fundamental frequency below, e.g., 10 Hz. The very low frequency audio tone may have a sine wave shape, a square wave shape or a clipped sine wave shape.
    Type: Application
    Filed: January 10, 2020
    Publication date: July 16, 2020
    Inventors: Brian K. Myers, John L. Murphy