Patents by Inventor Patrick Wijnings

Patrick Wijnings 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).

  • Calibration of microphone arrays with an uncalibrated source
    Patent number: 10880645
    Abstract: Microphone array calibration that does not require a calibrated source or calibrated reference microphone is provided. We provide a statistical (Bayesian) algorithm that (under condition of reasonable environment noise during calibration) can determine gain and phase differences of a whole array at once, even when the gain and/or phase of the source is unknown. More specifically, a Bayesian regression with complex log-normal prior and complex normal likelihood is employed. The inherent phase-wrapping ambiguity in this regression is resolved by exploiting the similarity of likelihood between a lattice point and its Euclidean Voronoi region.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: December 29, 2020
    Assignee: Sorama B.V.
    Inventors: Patrick Wijnings, Rick Scholte
  • Calibration of microphone arrays with an uncalibrated source
    Patent number: 10616682
    Abstract: Microphone array calibration that does not require a calibrated source or calibrated reference microphone is provided. We provide a statistical (Bayesian) algorithm that (under condition of reasonable environment noise during calibration) can determine gain and phase differences of a whole array at once, even when the gain and/or phase of the source is unknown. More specifically, a Bayesian regression with complex log-normal prior and complex normal likelihood is employed. The inherent phase-wrapping ambiguity in this regression is resolved by exploiting the similarity of likelihood between a lattice point and its Euclidean Voronoi region.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: April 7, 2020
    Assignee: Sorama
    Inventors: Patrick Wijnings, Rick Scholte
  • Calibration of microphone arrays with an uncalibrated source
    Publication number: 20190222929
    Abstract: Microphone array calibration that does not require a calibrated source or calibrated reference microphone is provided. We provide a statistical (Bayesian) algorithm that (under condition of reasonable environment noise during calibration) can determine gain and phase differences of a whole array at once, even when the gain and/or phase of the source is unknown. More specifically, a Bayesian regression with complex log-normal prior and complex normal likelihood is employed. The inherent phase-wrapping ambiguity in this regression is resolved by exploiting the similarity of likelihood between a lattice point and its Euclidean Voronoi region.
    Type: Application
    Filed: January 10, 2019
    Publication date: July 18, 2019
    Inventors: Patrick Wijnings, Rick Scholte