公开(公告)号：US12212949B2

公开(公告)日：2025-01-28

申请号：US18090090

申请日：2022-12-28

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jae-hyoun Yoo ,  Kyeongok Kang ,  Yong Ju Lee ,  Dae Young Jang

IPC: H04S3/00

Abstract: Provided is a method of reproducing an ambisonic signal in a virtual reality (VR) space. The ambisonic signal reproduction method may include receiving an ambisonic signal, mapping the ambisonic signal to channels localized on a sphere according to an equivalent spatial domain (ESD) standard corresponding to an order of the ambisonic signal, and performing a sound field reproduction in the VR space based on the channels localized on the sphere.

公开(公告)号：US12205599B2

公开(公告)日：2025-01-21

申请号：US18212364

申请日：2023-06-21

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  Kwangwoon University Industry-Academic Collaboration Foundation

Inventor： Tae Jin Lee ,  Seung-Kwon Baek ,  Min Je Kim ,  Dae Young Jang ,  Jeongil Seo ,  Kyeongok Kang ,  Jin-Woo Hong ,  Hochong Park ,  Young-Cheol Park

IPC: G10L19/008 ,  G10L19/02 ,  G10L19/04 ,  G10L19/12 ,  G10L19/20 ,  G10L19/00

Abstract: Provided is an encoding apparatus for integrally encoding and decoding a speech signal and a audio signal, and may include: an input signal analyzer to analyze a characteristic of an input signal; a stereo encoder to down mix the input signal to a mono signal when the input signal is a stereo signal, and to extract stereo sound image information; a frequency band expander to expand a frequency band of the input signal; a sampling rate converter to convert a sampling rate; a speech signal encoder to encode the input signal using a speech encoding module when the input signal is a speech characteristics signal; a audio signal encoder to encode the input signal using a audio encoding module when the input signal is a audio characteristic signal; and a bitstream generator to generate a bitstream.

公开(公告)号：US11882425B2

公开(公告)日：2024-01-23

申请号：US17681429

申请日：2022-02-25

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Dae Young Jang ,  Kyeongok Kang ,  Jae-hyoun Yoo ,  Yong Ju Lee ,  Tae Jin Lee

IPC: H04S7/00 ,  H04S3/00

CPC classification number: H04S7/303 ,  H04S3/008 ,  H04S2400/01 ,  H04S2400/03 ,  H04S2400/13

Abstract: A method and apparatus for rendering a volume sound source are disclosed. The method of rendering a volume sound source may include identifying information about a listener and information about the volume sound source, determining a corresponding area in which a source element is disposed in the volume sound source in consideration of the information about the listener, determining an angle between the listener and the corresponding area based on the information about the listener and the information about the volume sound source, determining a number of source elements disposed in the corresponding area according to the angle, determining a position and a gain of the source element using i) the number of source elements and ii) a distance between the listener and the volume sound source, and rendering the volume sound source according to the position and the gain of the source element.

公开(公告)号：US11705137B2

公开(公告)日：2023-07-18

申请号：US16925946

申请日：2020-07-10

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  Kwangwoon University Industry-Academic Collaboration Foundation

Inventor： Tae Jin Lee ,  Seung-Kwon Baek ,  Min Je Kim ,  Dae Young Jang ,  Jeongil Seo ,  Kyeongok Kang ,  Jin-Woo Hong ,  Hochong Park ,  Young-Cheol Park

IPC: G10L19/02 ,  G10L19/008 ,  G10L19/04 ,  G10L19/20 ,  G10L19/12 ,  G10L19/00

CPC classification number: G10L19/008 ,  G10L19/02 ,  G10L19/04 ,  G10L19/12 ,  G10L19/20 ,  G10L19/00

Abstract: Provided is an encoding apparatus for integrally encoding and decoding a speech signal and a audio signal, and may include: an input signal analyzer to analyze a characteristic of an input signal; a stereo encoder to down mix the input signal to a mono signal when the input signal is a stereo signal, and to extract stereo sound image information; a frequency band expander to expand a frequency band of the input signal; a sampling rate converter to convert a sampling rate; a speech signal encoder to encode the input signal using a speech encoding module when the input signal is a speech characteristics signal; a audio signal encoder to encode the input signal using a audio encoding module when the input signal is a audio characteristic signal; and a bitstream generator to generate a bitstream.

公开(公告)号：US11682402B2

公开(公告)日：2023-06-20

申请号：US17201943

申请日：2021-03-15

Applicant: Electronics and Telecommunications Research Institute

Inventor： Yong Ju Lee ,  Jeong Il Seo ,  Jae Hyoun Yoo ,  Seung Kwon Beack ,  Jong Mo Sung ,  Tae Jin Lee ,  Kyeong Ok Kang ,  Jin Woong Kim ,  Tae Jin Park ,  Dae Young Jang ,  Keun Woo Choi

IPC: G10L19/008 ,  H04S7/00

CPC classification number: G10L19/008 ,  H04S7/00 ,  H04S7/30 ,  H04S2400/01 ,  H04S2400/03

Abstract: Disclosed is a binaural rendering method and apparatus for decoding a multichannel audio signal. The binaural rendering method may include: extracting an early reflection component and a late reverberation component from a binaural filter; generating a stereo audio signal by performing binaural rendering of a multichannel audio signal base on the early reflection component; and applying the late reverberation component to the generated stereo audio signal.

公开(公告)号：US11310615B2

公开(公告)日：2022-04-19

申请号：US16747372

申请日：2020-01-20

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seung Kwon Beack ,  Tae Jin Lee ,  Jong Mo Sung ,  Kyeong Ok Kang ,  Jeong Il Seo ,  Dae Young Jang ,  Yong Ju Lee ,  Jin Woong Kim

IPC: H04S3/00 ,  G10L19/008

Abstract: An audio encoding apparatus and method that encodes hybrid contents including an object sound, a background sound, and metadata, and an audio decoding apparatus and method that decodes the encoded hybrid contents are provided. The audio encoding apparatus may include a mixing unit to generate an intermediate channel signal by mixing a background sound and an object sound, a matrix information encoding unit to encode matrix information used for the mixing, an audio encoding unit to encode the intermediate channel signal, and a metadata encoding unit to encode metadata including control information of the object sound.

公开(公告)号：US11062718B2

公开(公告)日：2021-07-13

申请号：US15714273

申请日：2017-09-25

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATION

Inventor： Seung Kwon Beack ,  Tae Jin Lee ,  Min Je Kim ,  Dae Young Jang ,  Kyeongok Kang ,  Jin Woo Hong ,  Ho Chong Park ,  Young-cheol Park

IPC: G10L19/022 ,  G10L19/16 ,  G10L19/20 ,  G10L19/02

Abstract: An encoding apparatus and a decoding apparatus in a transform between a Modified Discrete Cosine Transform (MDCT)-based coder and a different coder are provided. The encoding apparatus may encode additional information to restore an input signal encoded according to the MDCT-based coding scheme, when switching occurs between the MDCT-based coder and the different coder. Accordingly, an unnecessary bitstream may be prevented from being generated, and minimum additional information may be encoded.

公开(公告)号：US11056122B2

公开(公告)日：2021-07-06

申请号：US16786817

申请日：2020-02-10

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seung Kwon Beack ,  Tae Jin Lee ,  Jong Mo Sung ,  Jeong Il Seo ,  Kyeong Ok Kang ,  Dae Young Jang ,  Jin Woong Kim

IPC: G10L19/008 ,  H04S3/00

Abstract: An encoder and an encoding method for a multi-channel signal, and a decoder and a decoding method for a multi-channel signal are disclosed. A multi-channel signal may be efficiently processed by consecutive downmixing or upmixing.

公开(公告)号：US10405122B1

公开(公告)日：2019-09-03

申请号：US15984490

申请日：2018-05-21

Applicant: Electronics and Telecommunications Research Institute

Inventor： Dae Young Jang ,  Yong Ju Lee ,  Jae-hyoun Yoo ,  Sang Won Suh

IPC: H04S7/00

Abstract: Provided is a stereophonic sound reproducing apparatus that applies a multi-rendering scheme to a channel sound signal and an object sound signal to enhance a stereophonic effect. A stereophonic sound reproducing method performed by the stereophonic sound reproducing apparatus may include receiving a channel sound signal based on a channel, an object sound signal based on an object, and metadata, and reproducing the channel sound signal based on a preset rendering scheme and reproducing, based on the metadata including a rendering scheme determined using the object sound signal, each object sound signal using the determined rendering scheme.

公开(公告)号：US09906883B2

公开(公告)日：2018-02-27

申请号：US14477498

申请日：2014-09-04

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seung Kwon Beack ,  Tae Jin Lee ,  Jong Mo Sung ,  Kyeong Ok Kang ,  Jeong Il Seo ,  Dae Young Jang ,  Yong Ju Lee ,  Jin Woong Kim

IPC: G10L19/008 ,  H04S3/00

CPC classification number: H04S3/008 ,  G10L19/008 ,  H04S2420/03

Abstract: An audio encoding apparatus and method that encodes hybrid contents including an object sound, a background sound, and metadata, and an audio decoding apparatus and method that decodes the encoded hybrid contents are provided. The audio encoding apparatus may include a mixing unit to generate an intermediate channel signal by mixing a background sound and an object sound, a matrix information encoding unit to encode matrix information used for the mixing, an audio encoding unit to encode the intermediate channel signal, and a metadata encoding unit to encode metadata including control information of the object sound.