Patents by Inventor Nicholas C. Ames

Nicholas C. Ames 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).

  • Impulse response delay estimation
    Patent number: 12671950
    Abstract: A method for delay estimation of audio signals using an impulse response signal is provided. The method includes determining an energy envelope for the impulse response signal based on a moving average function of the impulse response signal. The method further includes determining an estimated delay of the impulse response signal based on at least one characteristic of the determined energy envelope. At least one audio signal phase is adjusted for at least one audio driver based on the estimated delay.
    Type: Grant
    Filed: December 19, 2023
    Date of Patent: June 30, 2026
    Assignee: Garmin International, Inc.
    Inventors: Constantine Mouzakis, Nicholas C. Ames
  • Time aligning loudspeaker drivers in a multi-driver system
    Patent number: 12659663
    Abstract: A method for phase alignment of audio signals using a first impulse response signal associated with a first frequency range and a second impulse response signal associated with a second frequency range is provided. The method includes determining a first start time for the first impulse response and a second start time for the second impulse response. The method further includes determining a delay based at least in part on a difference between the second start time and the first start time. The method further includes adjusting at least one audio signal phase for a first audio driver operating in the first frequency range with respect to a second audio driver operating in the second frequency range, where the adjusting of the at least one audio signal phase is based at least in part on the determined delay.
    Type: Grant
    Filed: December 19, 2023
    Date of Patent: June 16, 2026
    Assignee: Garmin International, Inc.
    Inventor: Nicholas C. Ames
  • TIME ALIGNING LOUDSPEAKER DRIVERS IN A MULTI-DRIVER SYSTEM
    Publication number: 20240223949
    Abstract: A method for phase alignment of audio signals using a first impulse response signal associated with a first frequency range and a second impulse response signal associated with a second frequency range is provided. The method includes determining a first start time for the first impulse response and a second start time for the second impulse response. The method further includes determining a delay based at least in part on a difference between the second start time and the first start time. The method further includes adjusting at least one audio signal phase for a first audio driver operating in the first frequency range with respect to a second audio driver operating in the second frequency range, where the adjusting of the at least one audio signal phase is based at least in part on the determined delay.
    Type: Application
    Filed: December 19, 2023
    Publication date: July 4, 2024
    Applicant: Garmin International, Inc.
    Inventor: Nicholas C. Ames
  • IMPULSE RESPONSE DELAY ESTIMATION
    Publication number: 20240223983
    Abstract: A method for delay estimation of audio signals using an impulse response signal is provided. The method includes determining an energy envelope for the impulse response signal based on a moving average function of the impulse response signal. The method further includes determining an estimated delay of the impulse response signal based on at least one characteristic of the determined energy envelope. At least one audio signal phase is adjusted for at least one audio driver based on the estimated delay.
    Type: Application
    Filed: December 19, 2023
    Publication date: July 4, 2024
    Applicant: Garmin International, Inc.
    Inventors: Constantine Mouzakis, Nicholas C. Ames