Patents by Inventor JongHewk PARK

JongHewk PARK 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).

  • Methods and apparatuses for noise reduction based on time and frequency analysis using deep learning
    Patent number: 11810586
    Abstract: A noise cancellation method including generating a first voice signal by canceling a first portion of noise included in an input voice signal using a first network, the first network being a trained u-net structure, and the first portion of the noise being in a time domain, applying a first window to the first voice signal, performing a fast Fourier transform on the first windowed voice signal to acquire a magnitude signal and a phase signal, acquiring a mask using a second network based on the magnitude signal, the second network being another trained u-net structure, applying the mask to the magnitude signal, generating a second voice signal by canceling a second portion of the noise by performing an inverse fast Fourier transform on the first windowed voice signal based on the masked magnitude signal and the phase signal, and applying a second window to the second voice signal.
    Type: Grant
    Filed: August 5, 2021
    Date of Patent: November 7, 2023
    Assignee: LINE PLUS CORPORATION
    Inventors: Ki Jun Kim, JongHewk Park
  • METHODS AND APPARATUSES FOR NOISE REDUCTION BASED ON TIME AND FREQUENCY ANALYSIS USING DEEP LEARNING
    Publication number: 20220044696
    Abstract: A noise cancellation method including generating a first voice signal by canceling a first portion of noise included in an input voice signal using a first network, the first network being a trained u-net structure, and the first portion of the noise being in a time domain, applying a first window to the first voice signal, performing a fast Fourier transform on the first windowed voice signal to acquire a magnitude signal and a phase signal, acquiring a mask using a second network based on the magnitude signal, the second network being another trained u-net structure, applying the mask to the magnitude signal, generating a second voice signal by canceling a second portion of the noise by performing an inverse fast Fourier transform on the first windowed voice signal based on the masked magnitude signal and the phase signal, and applying a second window to the second voice signal.
    Type: Application
    Filed: August 5, 2021
    Publication date: February 10, 2022
    Applicant: LINE Plus Corporation
    Inventors: Ki Jun KIM, JongHewk PARK