Patents by Inventor Jeonghun Seo

Jeonghun Seo 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).

  • Publication number: 20210135644
    Abstract: An audio signal processing apparatus is provided. The audio signal processing apparatus includes an input terminal receiving an input audio signal, a processor obtaining a difference between a playback loudness of the input audio signal and a desired loudness thereof and correcting a frequency band spectrum of an output audio signal for each of a plurality of frequency bands based on the difference between the playback loudness and the desired loudness of the input audio signal and a relationship between a loudness and a sound pressure for each of the plurality of frequency bands, and an output terminal outputting the output audio signal. The playback loudness is a loudness of the output audio signal when the input audio signal is output without the correction.
    Type: Application
    Filed: October 30, 2020
    Publication date: May 6, 2021
    Inventors: Sangbae CHON, Jeonghun SEO, Taegyu LEE, Younghoon KWON, Hyunoh OH
  • Publication number: 20210111686
    Abstract: A method of generating audio loudness performed by an audio loudness generation device may include: receiving loudness information on each of a plurality of audio tracks included in one group; predicting an intermediate loudness distribution, which is a loudness distribution for the one group, on the basis of the loudness information on each of the plurality of audio tracks; and generating an integrated loudness for the one group on the basis of the intermediate loudness distribution.
    Type: Application
    Filed: October 9, 2020
    Publication date: April 15, 2021
    Inventors: Sangbae CHON, Jiwon OH, Hyunoh OH, Jeonghun SEO, Taegyu LEE
  • Publication number: 20210112356
    Abstract: Disclosed is an audio signal processing device. The audio signal processing device includes a receiving end configured to receive a 2-channel stereo signal and a processor configured to process the 2-channel stereo signal. The processor is configured to filter the 2-channel stereo signal using a spatial distortion removal filter and output the filtered 2-channel stereo signal to a speaker including two or more channels. The spatial distortion removal filter is a filter for offsetting distortion that occurs when the output signal is transmitted from the speaker to a listener, and includes an ipsilateral filter applied to an ipsilateral signal of the 2-channel audio signal and a contralateral filter applied to a contralateral signal of the 2-channel audio signal.
    Type: Application
    Filed: October 8, 2020
    Publication date: April 15, 2021
    Inventors: Jeonghun SEO, Taegyu Lee, Hyunoh Oh, Jaesung Choi
  • Publication number: 20210084424
    Abstract: Disclosed is an audio signal processing method including: receiving a stereo signal; transforming the stereo signal into a frequency-domain signal; rendering the first signal based on a first ipsilateral filter coefficient; generating a frontal ipsilateral signal relating to the frequency-domain signal; rendering the second signal based on a second ipsilateral filter coefficient; generating a side ipsilateral signal relating to the frequency-domain signal; rendering the second signal based on a contralateral filter coefficient; generating a side contralateral signal relating to the frequency-domain signal; transforming an ipsilateral signal, generated by mixing the frontal ipsilateral signal and the side ipsilateral signal, and the side contralateral signal into a time-domain ipsilateral signal and a time-domain contralateral signal, which are time-domain signals, respectively; and generating a binaural signal by mixing the time-domain ipsilateral signal and the time-domain contralateral signal.
    Type: Application
    Filed: September 15, 2020
    Publication date: March 18, 2021
    Inventors: Sangbae CHON, Byoungjoon AHN, Jaesung CHOI, Hyunoh OH, Jeonghun SEO, Taegyu LEE
  • Patent number: 10917718
    Abstract: An audio signal processing apparatus for rendering an input audio signal is disclosed. The audio signal processing apparatus includes a receiving unit, which obtains a plurality of input audio signals corresponding to sounds collected by each of a plurality of sound collecting devices, a processor, which obtains an incidence direction for each frequency component for at least some frequency components of each of the plurality of input audio signals corresponding to a sound incident to each of the plurality of sound collecting devices based on cross-correlations between the plurality of input audio signals, and generates an output audio signal by rendering at least some of the plurality of input audio signals based on the incidence direction for each frequency component, and an output unit, which outputs the generated output audio signal.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: February 9, 2021
    Assignee: GAUDIO LAB, INC.
    Inventors: Jeonghun Seo, Sangbae Chon, Sewoon Jeon, Yonghyun Baek
  • Patent number: 10686420
    Abstract: The audio signal processing apparatus includes a processor configured to adjust an output loudness level of an input content. The processor is configured to obtain a loudness information analyzed from the input content, obtain a loudness gain applied to the input content based on the loudness information and a target loudness level, and adjust the output loudness level of the input content based on the loudness gain. In this case, in a first section among an entire section in which the input content is reproduced, the loudness gain is limited based on a first gain allowable range, and in a second section following the first section, the limitation on the loudness gain is released.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: June 16, 2020
    Assignee: GAUDIO LAB, INC.
    Inventors: Kyutae Park, Jeonghun Seo, Taegyu Lee, Hyunoh Oh, Sangbae Chon
  • Publication number: 20200175997
    Abstract: Disclosed is an audio signal processing apparatus for rendering an input audio signal. The audio signal processing apparatus may include a processor configured to obtain an input audio signal including an ambisonics signal and a non-diegetic channel difference signal, render the ambisonics signal to generate a first output audio signal, mix the first output audio signal and the non-diegetic channel difference signal to generate a second output audio signal, and output the second output audio signal.
    Type: Application
    Filed: February 7, 2020
    Publication date: June 4, 2020
    Applicant: GAUDIO LAB, INC.
    Inventors: Jeonghun SEO, Sangbae CHON
  • Patent number: 10609504
    Abstract: Disclosed is an audio signal processing device including a processor for outputting an output audio signal generated based on an input audio signal. The processor may be configured to obtain a first pair of head-related transfer function (HRTF)s including a first ipsilateral HRTF and a first contralateral HRTF based on a position of a virtual sound source corresponding to the input audio signal, from a first set of transfer functions including HRTFs corresponding to each specific position with respect to listener, and generate the output audio signal by performing binaural rendering the input audio signal based on the first pair of HRTFs.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: March 31, 2020
    Assignee: GAUDI AUDIO LAB, INC.
    Inventors: Kyutae Park, Jeonghun Seo, Sangbae Chon, Sewoon Jeon, Hyunoh Oh
  • Publication number: 20200037091
    Abstract: An audio signal processing apparatus including a receiving unit receiving an input audio signal, a processor generating an output audio signal reproducing a virtual sound source corresponding to the input audio signal in a virtual space, and an output unit outputting an output audio signal generated by the processor is disclosed.
    Type: Application
    Filed: September 26, 2019
    Publication date: January 30, 2020
    Inventors: Sewoon JEON, Sangbae CHON, Jeonghun SEO
  • Publication number: 20200029153
    Abstract: An audio signal processing apparatus for rendering an input audio signal is disclosed. The audio signal processing apparatus includes a receiving unit, which obtains a plurality of input audio signals corresponding to sounds collected by each of a plurality of sound collecting devices, a processor, which obtains an incidence direction for each frequency component for at least some frequency components of each of the plurality of input audio signals corresponding to a sound incident to each of the plurality of sound collecting devices based on cross-correlations between the plurality of input audio signals, and generates an output audio signal by rendering at least some of the plurality of input audio signals based on the incidence direction for each frequency component, and an output unit, which outputs the generated output audio signal.
    Type: Application
    Filed: September 27, 2019
    Publication date: January 23, 2020
    Inventors: Jeonghun SEO, Sangbae CHON, Sewoon JEON, Yonghyun BAEK
  • Publication number: 20190334496
    Abstract: The audio signal processing apparatus includes a processor configured to adjust an output loudness level of an input content. The processor is configured to obtain a loudness information analyzed from the input content, obtain a loudness gain applied to the input content based on the loudness information and a target loudness level, and adjust the output loudness level of the input content based on the loudness gain. In this case, in a first section among an entire section in which the input content is reproduced, the loudness gain is limited based on a first gain allowable range, and in a second section following the first section, the limitation on the loudness gain is released.
    Type: Application
    Filed: April 26, 2019
    Publication date: October 31, 2019
    Inventors: Kyutae PARK, Jeonghun Seo, Taegyu Lee, Hyunoh Oh, Sangbae Chon
  • Patent number: 10419867
    Abstract: The present invention relates to an apparatus and a method for processing an audio signal, and more particularly, to an apparatus and a method for efficiently rendering a higher order ambisonics signal. To this end, provided are an audio signal processing apparatus, including: a pre-processor configured to separate an input audio signal into a first component corresponding to at least one object signal and a second component corresponding to a residual signal and extract position vector information corresponding to the first component from the input audio signal; a first rendering unit configured to perform an object-based first rendering on the first component using the position vector information; and a second rendering unit configured to perform a channel-based second rendering on the second component and an audio signal processing method using the same.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: September 17, 2019
    Assignee: GAUDIO LAB, INC.
    Inventors: Jeonghun Seo, Taegyu Lee, Hyun Oh Oh
  • Patent number: 10349201
    Abstract: Disclosed is an audio signal processing device for performing binaural rendering on an input audio signal. The audio signal processing device includes a reception unit configured to receive the input audio signal, a binaural renderer configured to generate a 2-channel audio by performing binaural rendering on the input audio signal, and an output unit configured to output the 2-channel audio. The binaural renderer performs binaural rendering on the input audio signal based on a distance from a listener to a sound source corresponding to the input audio signal and a size of an object simulated by the sound source.
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: July 9, 2019
    Assignee: Gaudio Lab, Inc.
    Inventors: Yonghyun Baek, Hyunoh Oh, Taegyu Lee, Jeonghun Seo, Sewoon Jeon
  • Publication number: 20190200159
    Abstract: Disclosed is an audio signal processing device including a processor for outputting an output audio signal generated based on an input audio signal. The processor may be configured to obtain a first pair of head-related transfer function (HRTF)s including a first ipsilateral HRTF and a first contralateral HRTF based on a position of a virtual sound source corresponding to the input audio signal, from a first set of transfer functions including HRTFs corresponding to each specific position with respect to listener, and generate the output audio signal by performing binaural rendering the input audio signal based on the first pair of HRTFs.
    Type: Application
    Filed: December 6, 2018
    Publication date: June 27, 2019
    Applicant: GAUDI AUDIO LAB, INC.
    Inventors: Kyutae PARK, Jeonghun SEO, Sangbae CHON, Sewoon JEON, Hyunoh OH
  • Patent number: 10271157
    Abstract: Disclosed is an audio signal processing device. The audio signal processing device includes a receiving unit configured to receive a first audio signal corresponding to a sound collected by a first sound collecting device and a second audio signal corresponding to a sound collected by a second sound collecting device, a processor configured to process the second audio signal based on a correlation between the first audio signal and the second audio signal, and an output unit configured to output a processed second audio signal. The first audio signal is a signal for reproducing an output sound of a specific sound object, and the second audio signal is a signal for ambience reproduction of a space in which the specific sound object is positioned.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: April 23, 2019
    Assignee: Gaudio Lab, Inc.
    Inventors: Sewoon Jeon, Jeonghun Seo, Hyunoh Oh, Taegyu Lee, Yonghyun Baek
  • Patent number: 10262665
    Abstract: Disclosed is an audio signal processing device. The audio signal processing device includes a receiving unit configured to receive an ambisonic signal and an object signal, a processor configured to modify a magnitude of a specific directional component of the ambisonic signal based on a location of an object simulated by the object signal, and render a signal generated based on the object signal and the ambisonic signal having a magnitude-modified specific directional component, and an output unit configured to output the rendered signal.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: April 16, 2019
    Assignee: Gaudio Lab, Inc.
    Inventors: Jeonghun Seo, Hyunoh Oh, Sangbae Chon, Taegyu Lee, Sewoon Jeon, Yonghyun Baek, Cheolwoo Jeong
  • Patent number: 10165381
    Abstract: Disclosed is an audio signal processing device for rendering an input audio signal. The audio signal processing device includes a receiving unit configured to receive the input audio signal, a processor configured to generate an output audio signal by binaural rendering the input audio signal, and an output unit configured to output the output audio signal generated by the processor. The processor obtains a first transfer function based on a position of a virtual sound source corresponding to the input audio signal with respect to a listener, generates at least one flat response having a constant magnitude in a frequency domain, generates a second transfer function based on the first transfer function and the at least one flat response, and generates the output audio signal by binaural rendering the input audio signal based on the generated second transfer function.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: December 25, 2018
    Assignee: GAUDI AUDIO LAB, INC.
    Inventors: Yonghyun Baek, Jeonghun Seo, Sewoon Jeon, Sangbae Chon
  • Patent number: 10158964
    Abstract: Provided are an audio signal processing method and apparatus for adjusting a location of an audio object in correspondence to a location of a visual object. The audio signal processing apparatus includes a matching unit configured to select an audio object corresponding to a visual object extracted from a video signal among at least one audio object extracted from an audio signal, a location adjusting unit configured to adjust a location of a sound image of the audio signal based on a location of the selected audio object and a location of a visual object corresponding to the selected audio, and an output unit configured to output an audio signal whose the location of the sound image is adjusted.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: December 18, 2018
    Assignee: Gaudio Lab, Inc.
    Inventors: Hyunoh Oh, Jeonghun Seo, Taegyu Lee, Yonghyun Baek
  • Publication number: 20180324542
    Abstract: The present invention relates to an apparatus and a method for processing an audio signal, and more particularly, to an apparatus and a method for efficiently rendering a higher order ambisonics signal. To this end, provided are an audio signal processing apparatus, including: a pre-processor configured to separate an input audio signal into a first component corresponding to at least one object signal and a second component corresponding to a residual signal and extract position vector information corresponding to the first component from the input audio signal; a first rendering unit configured to perform an object-based first rendering on the first component using the position vector information; and a second rendering unit configured to perform a channel-based second rendering on the second component and an audio signal processing method using the same.
    Type: Application
    Filed: July 13, 2018
    Publication date: November 8, 2018
    Applicant: GAUDIO LAB, INC.
    Inventors: Jeonghun SEO, Taegyu LEE, Hyun Oh OH
  • Publication number: 20180242094
    Abstract: Disclosed is an audio signal processing device for rendering an input audio signal. The audio signal processing device includes a receiving unit configured to receive the input audio signal, a processor configured to generate an output audio signal by binaural rendering the input audio signal, and an output unit configured to output the output audio signal generated by the processor. The processor obtains a first transfer function based on a position of a virtual sound source corresponding to the input audio signal with respect to a listener, generates at least one flat response having a constant magnitude in a frequency domain, generates a second transfer function based on the first transfer function and the at least one flat response, and generates the output audio signal by binaural rendering the input audio signal based on the generated second transfer function.
    Type: Application
    Filed: April 25, 2018
    Publication date: August 23, 2018
    Applicant: GAUDI AUDIO LAB, INC.
    Inventors: Yonghyun BAEK, Jeonghun SEO, Sewoon JEON, Sangbae CHON