公开(公告)号：US20200234718A1

公开(公告)日：2020-07-23

申请号：US16841428

申请日：2020-04-06

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

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：US20200211576A1

公开(公告)日：2020-07-02

申请号：US16729112

申请日：2019-12-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seung Kwon BEACK ,  Woo-taek LIM ,  Tae Jin LEE

IPC: G10L19/032 ,  G10L25/30 ,  G06N3/08

Abstract: A loss function determining method and a loss function determining system for an audio signal are disclosed. A method of determining a loss function capable of being defined when a neural network is used to reconstruct an audio signal is provided.

公开(公告)号：US20200154224A1

公开(公告)日：2020-05-14

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

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：US20190259399A1

公开(公告)日：2019-08-22

申请号：US16404334

申请日：2019-05-06

Applicant: Electronics and Telecommunications Research Institute ,  THE KOREA DEVELOPMENT BANK

Inventor： Seung Kwon BEACK ,  Tae Jin LEE ,  Jong Mo SUNG ,  Kyeong Ok KANG ,  Keun Woo CHOI

IPC: G10L19/00 ,  G10L19/008

Abstract: An audio encoding apparatus to encode an audio signal using lossless coding or lossy coding and an audio decoding apparatus to decode an encoded audio signal are disclosed. An audio encoding apparatus according to an exemplary embodiment may include an input signal type determination unit to determine a type of an input signal based on characteristics of the input signal, a residual signal generation unit to generate a residual signal based on an output signal from the input signal type determination unit, and a coding unit to perform lossless coding or lossy coding using the residual signal.

公开(公告)号：US20190141464A1

公开(公告)日：2019-05-09

申请号：US16240020

申请日：2019-01-04

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jae Hyoun YOO ,  Tae Jin LEE ,  Seok Jin LEE

IPC: H04S3/02 ,  G10L19/16 ,  H04S3/00

CPC classification number: H04S3/02 ,  G10L19/008 ,  G10L19/173 ,  H04S3/008 ,  H04S2400/01 ,  H04S2400/03

Abstract: An audio metadata providing apparatus and method and a multichannel audio data playback apparatus and method to support a dynamic format conversion are provided. Dynamic format conversion information may include information about a plurality of format conversion schemes that are used to convert a first format set by an author of multichannel audio data into a second format that is based on a playback environment of the multichannel audio data and that are each set for corresponding playback periods of the multichannel audio data. The audio metadata providing apparatus may provide audio metadata including the dynamic format conversion information. The multichannel audio data playback apparatus may identify the dynamic format conversion information from the audio metadata, may convert the first format of the multichannel audio data into the second format based on the identified dynamic format conversion information, and may play back the multichannel audio data in the second format.

公开(公告)号：US20180130478A1

公开(公告)日：2018-05-10

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: G10L19/02

CPC classification number: G10L19/0212

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：US20180060019A1

公开(公告)日：2018-03-01

申请号：US15803464

申请日：2017-11-03

Applicant: Electronics and Telecommunications Research Institute ,  NIPPON HOSO KYOKAI

Inventor： Jae Hyoun YOO ,  Tae Jin LEE ,  Kyeong Ok KANG ,  Kaoru WATANABE ,  Satoshi OODE ,  Ikuko SAWAYA

IPC: G06F3/16 ,  H04S3/00

CPC classification number: G06F3/16 ,  G06F3/165 ,  G10L19/008 ,  G10L19/167 ,  H04S3/008 ,  H04S2400/11

Abstract: An apparatus and method for generating audio data and an apparatus and method for playing audio data may be disclosed, in which the apparatus for playing the audio data may extract a descriptor related to a multichannel audio signal from a bitstream generated by the apparatus for generating the audio data, and play the multichannel audio signal, based on the extracted descriptor, and the descriptor may include information on an audio signal included in the multichannel audio signal.

公开(公告)号：US20180014136A1

公开(公告)日：2018-01-11

申请号：US15714690

申请日：2017-09-25

Applicant: Electronics and Telecommunications Research Institute ,  Kyonggi University Industry and Academia Cooperation Foundation

Inventor： Jae Hyoun YOO ,  Tae Jin LEE ,  Seok Jin LEE

IPC: H04S3/02 ,  G10L19/16 ,  H04S3/00 ,  G10L19/008

CPC classification number: H04S3/02 ,  G10L19/008 ,  G10L19/173 ,  H04S3/008 ,  H04S2400/01 ,  H04S2400/03

Abstract: An audio metadata providing apparatus and method and a multichannel audio data playback apparatus and method to support a dynamic format conversion are provided. Dynamic format conversion information may include information about a plurality of format conversion schemes that are used to convert a first format set by an author of multichannel audio data into a second format that is based on a playback environment of the multichannel audio data and that are each set for corresponding playback periods of the multichannel audio data. The audio metadata providing apparatus may provide audio metadata including the dynamic format conversion information. The multichannel audio data playback apparatus may identify the dynamic format conversion information from the audio metadata, may convert the first format of the multichannel audio data into the second format based on the identified dynamic format conversion information, and may play back the multichannel audio data in the second format.

公开(公告)号：US20180005635A1

公开(公告)日：2018-01-04

申请号：US15540800

申请日：2015-12-31

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seung Kwon BEACK ,  Jeong Il SEO ,  Jong Mo SUNG ,  Tae Jin LEE ,  Jin Soo CHOI

IPC: G10L19/008 ,  H04S3/00

CPC classification number: G10L19/008 ,  G10L19/24 ,  H04S3/008 ,  H04S2400/01 ,  H04S2400/03

Abstract: An encoding method for a multi-channel audio signal, an encoding apparatus for performing the encoding method, and a decoding method for a multi-channel audio signal and a decoding apparatus for performing the decoding method are disclosed. A method and apparatus of bypassing an MPEG Surround (MPS) standard operation and using an arbitrary tree when a number of audio signals of N channels exceeds a channel number defined in an MPS standard, is disclosed.

公开(公告)号：US20170316786A1

公开(公告)日：2017-11-02

申请号：US15652055

申请日：2017-07-17

Applicant: Electronics and Telecommunications Research Institute ,  THE KOREA DEVELOPMENT BANK

Inventor： Seung Kwon BEACK ,  Tae Jin LEE ,  Jong Mo SUNG ,  Kyeong Ok KANG ,  Keun Woo CHOI

IPC: G10L19/00 ,  G10L19/008 ,  G10L19/02 ,  G10L19/22 ,  G10L19/002

CPC classification number: G10L19/0017 ,  G10L19/002 ,  G10L19/008 ,  G10L19/0212 ,  G10L19/22

Abstract: An audio encoding apparatus to encode an audio signal using lossless coding or lossy coding and an audio decoding apparatus to decode an encoded audio signal are disclosed. An audio encoding apparatus according to an exemplary embodiment may include an input signal type determination unit to determine a type of an input signal based on characteristics of the input signal, a residual signal generation unit to generate a residual signal based on an output signal from the input signal type determination unit, and a coding unit to perform lossless coding or lossy coding using the residual signal.