Patents by Inventor Paraskevas Argyropoulos

Paraskevas Argyropoulos 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).

  • Patent number: 10388300
    Abstract: Audio systems and methods for providing intelligible audio content within a vehicle cabin. In one example, the audio system includes a first speaker to provide first audio content to a first seating position based on an audio signal received from an audio signal source, a second speaker to provide second audio content to a second seating position, a first microphone assembly positioned to detect speech content originating at the second seating position, leaked second audio content from the second speaker, and road noise, and audio signal processing circuitry configured to determine a perturbing signal based at least in part on a combination of the first speech content, the leaked second audio content, and the road noise, and adjust the audio signal to the first speaker to compensate for an effect of the perturbing signal on the first audio content at the first seating position.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: August 20, 2019
    Assignee: BOSE CORPORATION
    Inventors: Cristian M. Hera, Jeffery R. Vautin, Elie Bou Daher, Paraskevas Argyropoulos, Vigneish Kathavarayan
  • Publication number: 20190141195
    Abstract: Audio systems and methods are provided to reduce echo content in an audio signal. The systems and methods receive an audio signal and sound stage rendering parameter(s), and select a set of filter coefficients to filter the audio signal to provide an estimated echo signal. The estimated echo signal is subtracted from a microphone signal to provide an output signal with reduced echo content. The set of filter coefficients are selected based upon the sound stage rendering parameter(s) from among a plurality of stored sets of filter coefficients.
    Type: Application
    Filed: January 8, 2019
    Publication date: May 9, 2019
    Applicant: Bose Corporation
    Inventors: Cristian Marius Hera, Vigneish Kathavarayan, Jeffery R. Vautin, Elie Bou Daher, Paraskevas Argyropoulos
  • Patent number: 10283105
    Abstract: The technology described in this document can be embodied in a computer-implemented method that includes receiving a first plurality of values representing a set of current coefficients of an adaptive filter disposed in an active noise cancellation system. The method also includes computing a second plurality of values each of which represents an instantaneous difference between a current coefficient and a corresponding preceding coefficient of the adaptive filter, and estimating, based on the second plurality of values, one or more instantaneous magnitudes of a transfer function that represents an effect of a secondary path of the active noise cancellation system. The method further includes updating the first plurality of values based on estimates of the one or more instantaneous magnitudes to generate a set of updated coefficients for the adaptive filter, and programming the adaptive filter with the set of updated coefficients.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: May 7, 2019
    Assignee: Bose Corporation
    Inventors: Emery M. Ku, Paraskevas Argyropoulos
  • Publication number: 20190045064
    Abstract: Audio systems and methods are provided to reduce echo content in an audio signal. The systems and methods receive an audio signal and sound stage rendering parameter(s), and select a set of filter coefficients to filter the audio signal to provide an estimated echo signal. The estimated echo signal is subtracted from a microphone signal to provide an output signal with reduced echo content. The set of filter coefficients are selected based upon the sound stage rendering parameter(s) from among a plurality of stored sets of filter coefficients.
    Type: Application
    Filed: August 3, 2017
    Publication date: February 7, 2019
    Inventors: Cristian M. Hera, Vigneish Kathavarayan, Jeffery R. Vautin, Elie Bou Daher, Paraskevas Argyropoulos
  • Patent number: 10200540
    Abstract: Audio systems and methods are provided to reduce echo content in an audio signal. The systems and methods receive an audio signal and sound stage rendering parameter(s), and select a set of filter coefficients to filter the audio signal to provide an estimated echo signal. The estimated echo signal is subtracted from a microphone signal to provide an output signal with reduced echo content. The set of filter coefficients are selected based upon the sound stage rendering parameter(s) from among a plurality of stored sets of filter coefficients.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: February 5, 2019
    Assignee: BOSE CORPORATION
    Inventors: Cristian M. Hera, Vigneish Kathavarayan, Jeffery R. Vautin, Elie Bou Daher, Paraskevas Argyropoulos
  • Publication number: 20180308504
    Abstract: Audio systems and methods for providing intelligible audio content within a vehicle cabin. In one example, the audio system includes a first speaker to provide first audio content to a first seating position based on an audio signal received from an audio signal source, a second speaker to provide second audio content to a second seating position, a first microphone assembly positioned to detect speech content originating at the second seating position, leaked second audio content from the second speaker, and road noise, and audio signal processing circuitry configured to determine a perturbing signal based at least in part on a combination of the first speech content, the leaked second audio content, and the road noise, and adjust the audio signal to the first speaker to compensate for an effect of the perturbing signal on the first audio content at the first seating position.
    Type: Application
    Filed: June 25, 2018
    Publication date: October 25, 2018
    Inventors: Cristian M. Hera, Jeffery R. Vautin, Elie Bou Daher, Paraskevas Argyropoulos, Vigneish Kathavarayan
  • Publication number: 20180233159
    Abstract: Audio systems and methods for providing intelligible audio content within a vehicle cabin. In one example, the audio system includes a first speaker to provide first audio content to a first seating position based on an audio signal received from an audio signal source, a second speaker to provide second audio content to a second seating position, a first microphone assembly positioned to detect speech content originating at the second seating position, leaked second audio content from the second speaker, and road noise, and audio signal processing circuitry configured to determine a perturbing signal based at least in part on a combination of the first speech content, the leaked second audio content, and the road noise, and adjust the audio signal to the first speaker to compensate for an effect of the perturbing signal on the first audio content at the first seating position.
    Type: Application
    Filed: February 13, 2017
    Publication date: August 16, 2018
    Inventors: Cristian M. Hera, Jeffery R. Vautin, Elie Bou Daher, Paraskevas Argyropoulos, Vigneish Kathavarayan
  • Patent number: 10049686
    Abstract: Audio systems and methods for providing intelligible audio content within a vehicle cabin. In one example, the audio system includes a first speaker to provide first audio content to a first seating position based on an audio signal received from an audio signal source, a second speaker to provide second audio content to a second seating position, a first microphone assembly positioned to detect speech content originating at the second seating position, leaked second audio content from the second speaker, and road noise, and audio signal processing circuitry configured to determine a perturbing signal based at least in part on a combination of the first speech content, the leaked second audio content, and the road noise, and adjust the audio signal to the first speaker to compensate for an effect of the perturbing signal on the first audio content at the first seating position.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: August 14, 2018
    Assignee: BOSE CORPORATION
    Inventors: Cristian M. Hera, Jeffery R. Vautin, Elie Bou Daher, Paraskevas Argyropoulos, Vigneish Kathavarayan
  • Patent number: 9923550
    Abstract: The technology described in this document can be embodied in a computer-implemented method that includes receiving, by one or more processing devices, a first plurality of values representing a set of coefficients of an adaptive filter disposed in an active noise cancellation system. The method also includes accessing one or more estimates of instantaneous phase values associated with a transfer function representing an effect of a secondary path of the active noise cancellation system, and updating the first plurality of values based on the one or more estimates of the instantaneous phase values to generate a set of updated coefficients for the adaptive filter. The method further includes programming the adaptive filter with the set of updated coefficients to affect operation of the adaptive filter.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: March 20, 2018
    Assignee: Bose Corporation
    Inventors: Paraskevas Argyropoulos, Emery M. Ku
  • Publication number: 20180025717
    Abstract: The technology described in this document can be embodied in a computer-implemented method that includes receiving a first plurality of values representing a set of current coefficients of an adaptive filter disposed in an active noise cancellation system. The method also includes computing a second plurality of values each of which represents an instantaneous difference between a current coefficient and a corresponding preceding coefficient of the adaptive filter, and estimating, based on the second plurality of values, one or more instantaneous magnitudes of a transfer function that represents an effect of a secondary path of the active noise cancellation system.
    Type: Application
    Filed: September 25, 2017
    Publication date: January 25, 2018
    Inventors: Emery M. Ku, Paraskevas Argyropoulos
  • Patent number: 9773491
    Abstract: The technology described in this document can be embodied in a computer-implemented method that includes receiving a first plurality of values representing a set of current coefficients of an adaptive filter disposed in an active noise cancellation system. The method also includes computing a second plurality of values each of which represents an instantaneous difference between a current coefficient and a corresponding preceding coefficient of the adaptive filter, and estimating, based on the second plurality of values, one or more instantaneous magnitudes of a transfer function that represents an effect of a secondary path of the active noise cancellation system. The method further includes updating the first plurality of values based on estimates of the one or more instantaneous magnitudes to generate a set of updated coefficients for the adaptive filter, and programming the adaptive filter with the set of updated coefficients.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: September 26, 2017
    Assignee: Bose Corporation
    Inventors: Emery Ku, Paraskevas Argyropoulos
  • Publication number: 20170077906
    Abstract: The technology described in this document can be embodied in a computer-implemented method that includes receiving, by one or more processing devices, a first plurality of values representing a set of coefficients of an adaptive filter disposed in an active noise cancellation system. The method also includes accessing one or more estimates of instantaneous phase values associated with a transfer function representing an effect of a secondary path of the active noise cancellation system, and updating the first plurality of values based on the one or more estimates of the instantaneous phase values to generate a set of updated coefficients for the adaptive filter. The method further includes programming the adaptive filter with the set of updated coefficients to affect operation of the adaptive filter.
    Type: Application
    Filed: September 16, 2015
    Publication date: March 16, 2017
    Inventors: Paraskevas Argyropoulos, Emery M. Ku
  • Publication number: 20170076709
    Abstract: The technology described in this document can be embodied in a computer-implemented method that includes receiving a first plurality of values representing a set of current coefficients of an adaptive filter disposed in an active noise cancellation system. The method also includes computing a second plurality of values each of which represents an instantaneous difference between a current coefficient and a corresponding preceding coefficient of the adaptive filter, and estimating, based on the second plurality of values, one or more instantaneous magnitudes of a transfer function that represents an effect of a secondary path of the active noise cancellation system.
    Type: Application
    Filed: September 16, 2015
    Publication date: March 16, 2017
    Inventors: Emery Ku, Paraskevas Argyropoulos