Patents by Inventor Inseon Jang

Inseon Jang 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: 9680999
    Abstract: An acoustic echo removing apparatus detects space information representing a location of a sound source using a plurality of microphone input signals that are received through a plurality of microphones, and generates an acoustic echo estimation signal from a far-end talker voice signal using an adaptive filter coefficient. The acoustic echo removing apparatus detects a double talk segment using the space information, and determines update of the adaptive filter coefficient according to whether the double talk segment exists.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: June 13, 2017
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventor: Inseon Jang
  • Publication number: 20150133097
    Abstract: An acoustic echo removing apparatus detects space information representing a location of a sound source using a plurality of microphone input signals that are received through a plurality of microphones, and generates an acoustic echo estimation signal from a far-end talker voice signal using an adaptive filter coefficient. The acoustic echo removing apparatus detects a double talk segment using the space information, and determines update of the adaptive filter coefficient according to whether the double talk segment exists.
    Type: Application
    Filed: April 30, 2014
    Publication date: May 14, 2015
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventor: Inseon JANG
  • Patent number: 8976983
    Abstract: Provided are a method of generating and playing an object-based audio content that may effectively store preset information about an object-based audio content, and a computer-readable recording medium for storing data having a file format structure for an object-based audio service. The method of generating the object-based audio content may include: receiving a plurality of audio objects (310) generating at least one preset using the plurality of audio objects (320) and storing a preset parameter with respect to an attribute of the at least preset and the plurality of audio objects (330). The preset parameter may be stored in a form of a box that is defined in a media file format about the object-based audio content. Through this, it is possible to effectively store a preset about a plurality of audio objects.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: March 10, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Inseon Jang, Jeongil Seo, Hui Yong Kim, Tae Jin Lee, Kyeongok Kang, Jin Woo Hong, Jin Woong Kim, Chieteuk Ahn, SeungChul Ham
  • Patent number: 8340943
    Abstract: Provided is an apparatus of separating a musical sound source, which may re-construct mixed signals into target sound sources and other sound sources directly using sound source information performed using a predetermined musical instrument when the sound source information is present, thereby more effectively separating sound sources included in the mixed signal. The apparatus may include a Nonnegative Matrix Partial Co-Factorization (NMPCF) analysis unit to perform an NMPCF analysis on a mixed signal and a predetermined sound source signal using a sound source separation model, and to obtain a plurality of entity matrices based on the analysis result, and a target instrument signal separating unit to separate, from the mixed signal, a target instrument signal corresponding to the predetermined sound source signal by calculating an inner product between the plurality of entity matrices.
    Type: Grant
    Filed: August 12, 2010
    Date of Patent: December 25, 2012
    Assignees: Electronics and Telecommunications Research Institute, Postech Acadeny-Industry Foundation
    Inventors: Min Je Kim, Seungjin Choi, Jiho Yoo, Kyeongok Kang, Inseon Jang, Jin-Woo Hong
  • Patent number: 8080724
    Abstract: Provided are an apparatus and method of separating, from a mixed signal, a sound source generated using a rhythm musical instrument based on characteristics of the rhythm musical instrument repeated in an aspect of time. The apparatus may include a separation unit to separate a plurality of mixed signals into a plurality of segments, a Nonnegative Matrix Partial Co-Factorization (NMPCF) analysis unit to perform an NMPCF analysis on the plurality of segments, and to obtain a plurality of entity matrices based on the analysis result, a target instrument signal separating unit to separate, from the mixed signals, a target instrument signal, by calculating an inner product between the plurality of entity matrices, and a signal association unit to associate the target instrument signals separated from each of the plurality of segments.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: December 20, 2011
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Min Je Kim, Seung Kwon Beack, Kyeongok Kang, Dae Young Jang, Tae Jin Lee, Inseon Jang, Jin Woo Hong
  • Publication number: 20110150098
    Abstract: A three-dimensional audio signal processing apparatus using a Head Related Transfer Function (HRTF) includes an audio decoder for decoding audio data to restore original audio signals and a three-dimensional audio generator for generating three-dimensional signals corresponding to the audio signals restored by using the HRTF modeled according to physical characteristics of an user, wherein the HRTF modeled according to physical characteristics of an user is an individualized HRTF.
    Type: Application
    Filed: September 26, 2008
    Publication date: June 23, 2011
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Yongju Lee, Inseon Jang, Daeyoung Jang, Jeong-Il Seo, Kyeongok Kang, Jinwoong Kim, Jinwoo Hong
  • Publication number: 20110064249
    Abstract: Provided are a method of generating and playing an object-based audio content that may effectively store preset information about an object-based audio content, and a computer-readable recording medium for storing data having a file format structure for an object-based audio service. The method of generating the object-based audio content may include: receiving a plurality of audio objects (310) generating at least one preset using the plurality of audio objects (320) and storing a preset parameter with respect to an attribute of the at least preset and the plurality of audio objects (330). The preset parameter may be stored in a form of a box that is defined in a media file format about the object-based audio content. Through this, it is possible to effectively store a preset about a plurality of audio objects.
    Type: Application
    Filed: April 23, 2009
    Publication date: March 17, 2011
    Applicants: AUDIZEN CO., LTD, Electronics and Telecommunications Research Institute
    Inventors: Inseon Jang, Jeongil Seo, Hui Yong Kim, Tae Jin Lee, Kyeongok Kang, Jin Woo Hong, Jin Woong Kim, Chieteuk Ahn, SeungChul Ham
  • Publication number: 20110061516
    Abstract: Provided are an apparatus and method of separating, from a mixed signal, a sound source generated using a rhythm musical instrument based on characteristics of the rhythm musical instrument repeated in an aspect of time. The apparatus may include a separation unit to separate a plurality of mixed signals into a plurality of segments, a Nonnegative Matrix Partial Co-Factorization (NMPCF) analysis unit to perform an NMPCF analysis on the plurality of segments, and to obtain a plurality of entity matrices based on the analysis result, a target instrument signal separating unit to to separate, from the mixed signals, a target instrument signal, by calculating an inner product between the plurality of entity matrices, and a signal association unit to associate the target instrument signals separated from each of the plurality of segments.
    Type: Application
    Filed: March 29, 2010
    Publication date: March 17, 2011
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Min Je KIM, Seung Kwon BEACK, Kyeongok KANG, Dae Young JANG, Tae Jin LEE, Inseon JANG, Jin Woo HONG
  • Publication number: 20110054917
    Abstract: Provided are a method and apparatus for structuring a bitstream for an object-based audio service, and an apparatus for encoding the bitstream. A method of structuring a bitstream, may include: configuring the bitstream by separating the bitstream into a file header and frames of audio objects that are separated using a sound source separation scheme; and storing, in the file header, reproduction level information of audio objects.
    Type: Application
    Filed: August 30, 2010
    Publication date: March 3, 2011
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Tae Jin LEE, Min Je KIM, Kyeongok KANG, Dae Young JANG, Inseon JANG, Seung Kwon BEACK, Jin Woo HONG
  • Publication number: 20110054848
    Abstract: Provided is an apparatus of separating a musical sound source, which may re-construct mixed signals into target sound sources and other sound sources directly using sound source information performed using a predetermined musical instrument when the sound source information is present, thereby more effectively separating sound sources included in the mixed signal. The apparatus may include a Nonnegative Matrix Partial Co-Factorization (NMPCF) analysis unit to perform an NMPCF analysis on a mixed signal and a predetermined sound source signal using a sound source separation model, and to obtain a plurality of entity matrices based on the analysis result, and a target instrument signal separating unit to separate, from the mixed signal, a target instrument signal corresponding to the predetermined sound source signal by calculating an inner product between the plurality of entity matrices.
    Type: Application
    Filed: August 12, 2010
    Publication date: March 3, 2011
    Applicants: Electronics and Telecommunications Research Institute, Postech Academy-Industry Foundation
    Inventors: Min Je KIM, Seungjin CHOI, Jiho YOO, Kyeongok KANG, Inseon JANG, Jin-Woo HONG
  • Patent number: 7605722
    Abstract: Provided are a lossless audio coding/decoding apparatus and method. The lossless audio coding apparatus includes a first coder to directly code first symbols; a second coder module comprising a plurality of second coders to convert the first symbols into second symbols and to code the second symbols; a first selector to compare the performance of the first coder to the performance of the second coders and to output a coding mode in accordance with a comparison result; and a second selector to output a final bitstream by coding the first symbols in correspondence with the coding mode. According to the present invention, the performance of audio coding may be improved.
    Type: Grant
    Filed: April 11, 2008
    Date of Patent: October 20, 2009
    Assignees: Electronics and Telecommunications Research Institute, Yonsei University Office of Research Affairs, Hanyang University Industry-University Cooperation Foundation, Kwangwoon University Industry-Academic Collaboration Foundation
    Inventors: Seung Kwon Beack, Jeongil Seo, Inseon Jang, Dae Young Jae, Hochong Park, Sang-One Kang, Young-Cheol Park, Jin Woo Hong
  • Publication number: 20080284623
    Abstract: Provided are a lossless audio coding/decoding apparatus and method. The lossless audio coding apparatus includes a first coder to directly code first symbols; a second coder module comprising a plurality of second coders to convert the first symbols into second symbols and to code the second symbols; a first selector to compare the performance of the first coder to the performance of the second coders and to output a coding mode in accordance with a comparison result; and a second selector to output a final bitstream by coding the first symbols in correspondence with the coding mode. According to the present invention, the performance of audio coding may be improved.
    Type: Application
    Filed: April 11, 2008
    Publication date: November 20, 2008
    Inventors: Seung Kwon BEACK, Jeongil SEO, Inseon JANG, Dae Young JANG, Hochong PARK, Sang-One KANG, Young-Cheol PARK, Jin Woo HONG