Patents by Inventor Pericles Bakalos

Pericles Bakalos 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).

  • Pressure equalization systems and methods
    Patent number: 9621979
    Abstract: An apparatus include an earpiece including a chamber. The chamber has a passageway. The apparatus includes a valve configured to relieve acoustic pressure in the chamber. The valve control assembly is configured to control the valve based on acoustic pressure in the chamber.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: April 11, 2017
    Assignee: BOSE CORPORATION
    Inventor: Pericles Bakalos
  • Pressure Equalization Systems and Methods
    Publication number: 20160150310
    Abstract: An apparatus include an earpiece including a chamber. The chamber has a passageway. The apparatus includes a valve configured to relieve acoustic pressure in the chamber. The valve control assembly is configured to control the valve based on acoustic pressure in the chamber.
    Type: Application
    Filed: November 20, 2014
    Publication date: May 26, 2016
    Inventor: Pericles Bakalos
  • Instability detection and avoidance in a feedback system
    Patent number: 8824695
    Abstract: In one aspect, in general, an active noise reduction system detects actual or potential instability by detecting characteristics of the system related to potential or actual unstable behavior (e.g., oscillation) and adapts system characteristics to mitigate such instability. In some examples, the system adapts to variation in characteristics of an acoustic component of a feedback path that has or may induce unstable behavior to improve a user's acoustic experience.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: September 2, 2014
    Assignee: Bose Corporation
    Inventors: Pericles Bakalos, Anand Parthasarathi
  • Adaptive feed-forward noise reduction
    Patent number: 8693700
    Abstract: In an aspect, the invention features an active noise reduction device including an electronic signal processing circuit. The electronic signal processing circuit includes a first input for accepting a first signal, a second input for accepting a second signal, an output for providing a third signal, a feed-forward path from the first input to the output, and a feed-forward controller for determining the control parameter by calculating a control signal using the first signal and the second signal and then using the control signal to determine the control parameter. The feed-forward path includes a fixed compensation linear filter and a variable compensation filter having an input for receiving a control parameter that applies a selected linear filter from a family of linear filters that vary in both gain and spectral shape and are selectable by the control parameter.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: April 8, 2014
    Assignee: Bose Corporation
    Inventors: Pericles Bakalos, Anand Parthasarathi
  • INSTABILITY DETECTION AND AVOIDANCE IN A FEEDBACK SYSTEM
    Publication number: 20130083938
    Abstract: In one aspect, in general, an active noise reduction system detects actual or potential instability by detecting characteristics of the system related to potential or actual unstable behavior (e.g., oscillation) and adapts system characteristics to mitigate such instability. In some examples, the system adapts to variation in characteristics of an acoustic component of a feedback path that has or may induce unstable behavior to improve a user's acoustic experience.
    Type: Application
    Filed: October 3, 2011
    Publication date: April 4, 2013
    Applicant: Bose Corporation
    Inventors: Pericles Bakalos, Anand Parthasarathi
  • ADAPTIVE FEED-FORWARD NOISE REDUCTION
    Publication number: 20120250873
    Abstract: In an aspect, the invention features an active noise reduction device including an electronic signal processing circuit. The electronic signal processing circuit includes a first input for accepting a first signal, a second input for accepting a second signal, an output for providing a third signal, a feed-forward path from the first input to the output, and a feed-forward controller for determining the control parameter by calculating a control signal using the first signal and the second signal and then using the control signal to determine the control parameter. The feed-forward path includes a fixed compensation linear filter and a variable compensation filter having an input for receiving a control parameter that applies a selected linear filter from a family of linear filters that vary in both gain and spectral shape and are selectable by the control parameter.
    Type: Application
    Filed: March 31, 2011
    Publication date: October 4, 2012
    Applicant: Bose Corporation
    Inventors: Pericles Bakalos, Anand Parthasarathi