Patents by Inventor Soojoong HWANG

Soojoong HWANG 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).

  • Audio encoding/decoding apparatus and method using vector quantized residual error feature
    Patent number: 11804230
    Abstract: An audio encoding/decoding apparatus and method using vector quantized residual error features are disclosed. An audio signal encoding method includes outputting a bitstream of a main codec by encoding an original signal, decoding the bitstream of the main codec, determining a residual error feature vector from a feature vector of a decoded signal and a feature vector of the original signal, and outputting a bitstream of additional information by encoding the residual error feature vector.
    Type: Grant
    Filed: April 1, 2022
    Date of Patent: October 31, 2023
    Assignees: Electronics and Telecommunications Research Institute, Gwangju Institute of Science and Technology
    Inventors: Inseon Jang, Seung Kwon Beack, Jongmo Sung, Tae Jin Lee, Woo-taek Lim, Jongwon Shin, Youngju Cheon, Sangwook Han, Soojoong Hwang
  • Methods of encoding and decoding audio signal using side information, and encoder and decoder for performing the methods
    Patent number: 11783844
    Abstract: Disclosed are methods of encoding and decoding an audio signal using side information, and an encoder and a decoder for performing the methods. The method of encoding an audio signal using side information includes identifying an input signal, the input signal being an original audio signal, extracting side information from the input signal using a learning model trained to extract side information from a feature vector of the input signal, encoding the input signal, and generating a bitstream by combining the encoded input signal and the side information.
    Type: Grant
    Filed: November 16, 2021
    Date of Patent: October 10, 2023
    Assignees: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Woo-taek Lim, Seung Kwon Beack, Jongmo Sung, Tae Jin Lee, Inseon Jang, Jong Won Shin, Soojoong Hwang, Youngju Cheon, Sangwook Han
  • METHOD OF ENCODING AUDIO SIGNAL AND ENCODER, METHOD OF DECODING AUDIO SIGNAL AND DECODER
    Publication number: 20230230604
    Abstract: A method of encoding an audio signal and an encoder and a method of decoding an audio signal and a decoder are provided. The method of encoding an audio signal includes outputting a decoded signal by using a bitstream that encodes an audio signal, separating the decoded signal into a low-band signal and a high-band signal by using a sound source separator, upsampling the low-band signal, upsampling the high-band signal, and restoring the audio signal by synthesizing the upsampled low-band signal with the upsampled high-band signal, wherein the bitstream is generated by encoding a superimposed signal in which a signal in a high frequency band of the audio signal is superimposed on a low frequency band of the audio signal.
    Type: Application
    Filed: January 19, 2023
    Publication date: July 20, 2023
    Applicants: Electronics and Telecommunications Research Institute, Gwangju Institute of Science and Technology
    Inventors: Inseon JANG, Tae Jin LEE, Seung Kwon BEACK, Jongmo SUNG, Woo-taek LIM, Byeongho CHO, Jongwon SHIN, Soojoong HWANG, Eunkyun LEE, Youngwon CHOI, Sangwook HAN
  • AUDIO ENCODING/DECODING APPARATUS AND METHOD USING VECTOR QUANTIZED RESIDUAL ERROR FEATURE
    Publication number: 20230039546
    Abstract: An audio encoding/decoding apparatus and method using vector quantized residual error features are disclosed. An audio signal encoding method includes outputting a bitstream of a main codec by encoding an original signal, decoding the bitstream of the main codec, determining a residual error feature vector from a feature vector of a decoded signal and a feature vector of the original signal, and outputting a bitstream of additional information by encoding the residual error feature vector.
    Type: Application
    Filed: April 1, 2022
    Publication date: February 9, 2023
    Inventors: Inseon JANG, Seung Kwon BEACK, Jongmo SUNG, Tae Jin LEE, Woo-taek LIM, Jongwon SHIN, Youngju CHEON, Sangwook HAN, Soojoong HWANG
  • METHODS OF ENCODING AND DECODING AUDIO SIGNAL USING SIDE INFORMATION, AND ENCODER AND DECODER FOR PERFORMING THE METHODS
    Publication number: 20220358940
    Abstract: Disclosed are methods of encoding and decoding an audio signal using side information, and an encoder and a decoder for performing the methods. The method of encoding an audio signal using side information includes identifying an input signal, the input signal being an original audio signal, extracting side information from the input signal using a learning model trained to extract side information from a feature vector of the input signal, encoding the input signal, and generating a bitstream by combining the encoded input signal and the side information.
    Type: Application
    Filed: November 16, 2021
    Publication date: November 10, 2022
    Inventors: Woo-taek LIM, Seung Kwon BEACK, Jongmo SUNG, Tae Jin LEE, Inseon JANG, Jong Won SHIN, Soojoong HWANG, Youngju CHEON, Sangwook HAN