Patents by Inventor Carlos Renato Calcada Nakagawa

Carlos Renato Calcada Nakagawa 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: 11985482
    Abstract: Disclosed herein, among other things, are apparatus and methods for neural network-driven feedback cancellation for hearing assistance devices. Various embodiments include a method of signal processing an input signal in a hearing assistance device to mitigate entrainment, the hearing assistance device including a receiver and a microphone. The method includes performing neural network processing to identify acoustic features in a plurality of audio signals and predict target outputs for the plurality of audio signals, and using the trained neural network to control acoustic feedback cancellation of the input signal.
    Type: Grant
    Filed: March 13, 2023
    Date of Patent: May 14, 2024
    Assignee: Starkey Laboratories, Inc.
    Inventors: Kelly Fitz, Carlos Renato Calcada Nakagawa, Tao Zhang
  • Publication number: 20230328463
    Abstract: Disclosed herein, among other things, are apparatus and methods for neural network-driven feedback cancellation for hearing assistance devices. Various embodiments include a method of signal processing an input signal in a hearing assistance device to mitigate entrainment, the hearing assistance device including a receiver and a microphone. The method includes performing neural network processing to identify acoustic features in a plurality of audio signals and predict target outputs for the plurality of audio signals, and using the trained neural network to control acoustic feedback cancellation of the input signal.
    Type: Application
    Filed: March 13, 2023
    Publication date: October 12, 2023
    Inventors: Kelly Fitz, Carlos Renato Calcada Nakagawa, Tao Zhang
  • Patent number: 11606650
    Abstract: Disclosed herein, among other things, are apparatus and methods for neural network-driven feedback cancellation for hearing assistance devices. Various embodiments include a method of signal processing an input signal in a hearing assistance device to mitigate entrainment, the hearing assistance device including a receiver and a microphone. The method includes performing neural network processing to identify acoustic features in a plurality of audio signals and predict target outputs for the plurality of audio signals, and using the trained neural network to control acoustic feedback cancellation of the input signal.
    Type: Grant
    Filed: March 5, 2021
    Date of Patent: March 14, 2023
    Assignee: Starkey Laboratories, Inc.
    Inventors: Kelly Fitz, Carlos Renato Calcada Nakagawa, Tao Zhang
  • Patent number: 11445306
    Abstract: The present subject matter can improve robustness of performance of acoustic feedback cancellation in the presence of strong acoustic disturbances. In various embodiments, an optimization criterion determined to enhance robustness of an adaptive feedback canceller in an audio device against disturbances in an incoming audio signal can be applied such that the adaptive feedback canceller remains in a converged state in response to presence of the disturbances.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: September 13, 2022
    Assignee: Starkey Laboratories, Inc.
    Inventors: Carlos Renato Calcada Nakagawa, Karim Helwani, Ivo Merks
  • Publication number: 20210195345
    Abstract: Disclosed herein, among other things, are apparatus and methods for neural network-driven feedback cancellation for hearing assistance devices. Various embodiments include a method of signal processing an input signal in a hearing assistance device to mitigate entrainment, the hearing assistance device including a receiver and a microphone. The method includes performing neural network processing to identify acoustic features in a plurality of audio signals and predict target outputs for the plurality of audio signals, and using the trained neural network to control acoustic feedback cancellation of the input signal.
    Type: Application
    Filed: March 5, 2021
    Publication date: June 24, 2021
    Inventors: Kelly Fitz, Carlos Renato Calcada Nakagawa, Tao Zhang
  • Patent number: 10097930
    Abstract: Disclosed herein, among other things, are apparatus and methods for tonality-driven feedback canceler adaptation for hearing devices. Various embodiments include a method of signal processing an input signal in a hearing device to mitigate entrainment, the hearing device including a receiver and a microphone. The method includes detecting strength of tonality of the input signal by estimating a second derivative of subband phase of the input signal, and adjusting parameters of an adaptive feedback canceler of the hearing device based on the detected tonality.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: October 9, 2018
    Assignee: Starkey Laboratories, Inc.
    Inventors: Carlos Renato Calcada Nakagawa, Kelly Fitz
  • Publication number: 20180063651
    Abstract: The present subject matter can improve robustness of performance of acoustic feedback cancellation in the presence of strong acoustic disturbances. In various embodiments, an optimization criterion determined to enhance robustness of an adaptive feedback canceller in an audio device against disturbances in an incoming audio signal can be applied such that the adaptive feedback controller remains in a converged state in response to presence of the disturbances.
    Type: Application
    Filed: August 25, 2017
    Publication date: March 1, 2018
    Inventors: Carlos Renato Calcada Nakagawa, Karim Helwani, Ivo Merks
  • Publication number: 20170311095
    Abstract: Disclosed herein, among other things, are apparatus and methods for neural network-driven feedback cancellation for hearing assistance devices. Various embodiments include a method of signal processing an input signal in a hearing assistance device to mitigate entrainment, the hearing assistance device including a receiver and a microphone. The method includes performing neural network processing to identify acoustic features in a plurality of audio signals and predict target outputs for the plurality of audio signals, and using the trained neural network to control acoustic feedback cancellation of the input signal.
    Type: Application
    Filed: April 20, 2016
    Publication date: October 26, 2017
    Inventors: Kelly Fitz, Carlos Renato Calcada Nakagawa, Tao Zhang
  • Publication number: 20170311091
    Abstract: Disclosed herein, among other things, are apparatus and methods for tonality-driven feedback canceler adaptation for hearing devices. Various embodiments include a method of signal processing an input signal in a hearing device to mitigate entrainment, the hearing device including a receiver and a microphone. The method includes detecting strength of tonality of the input signal by estimating a second derivative of subband phase of the input signal, and adjusting parameters of an adaptive feedback canceler of the hearing device based on the detected tonality.
    Type: Application
    Filed: April 20, 2016
    Publication date: October 26, 2017
    Inventors: Carlos Renato Calcada Nakagawa, Kelly Fitz