公开(公告)号：US20160071522A1

公开(公告)日：2016-03-10

申请号：US14783767

申请日：2014-04-10

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 ,  G10L19/02 ,  H04S3/00

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

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.

Abstract translation: 公开了一种用于多声道信号的编码器和编码方法，以及用于多声道信号的解码器和解码方法。 可以通过连续的下混合或上混合来有效地处理多信道信号。

公开(公告)号：US20150081286A1

公开(公告)日：2015-03-19

申请号：US14541904

申请日：2014-11-14

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seung Kwon BEACK ,  Tae Jin LEE ,  Min Je KIM ,  Kyeongok KANG ,  Dae Young JANG ,  Jin Woo HONG ,  Jeongil SEO ,  Chieteuk AHN ,  Hochong PARK ,  Young-cheol PARK

IPC: G10L19/125

CPC classification number: G10L19/087 ,  G10L19/125 ,  G10L19/22 ,  G10L19/26

Abstract: Disclosed is an LPC residual signal encoding/decoding apparatus of an MDCT based unified voice and audio encoding device. The LPC residual signal encoding apparatus analyzes a property of an input signal, selects an encoding method of an LPC filtered signal, and encode the LPC residual signal based on one of a real filterbank, a complex filterbank, and an algebraic code excited linear prediction (ACELP).

Abstract translation: 公开了一种基于MDCT的统一语音和音频编码装置的LPC残余信号编码/解码装置。 LPC残差信号编码装置分析输入信号的特性，选择LPC滤波信号的编码方式，并根据实数滤波器组，复滤波器组和代数码激励线性预测（LPC滤波器组） ACELP）。

公开(公告)号：US20150025894A1

公开(公告)日：2015-01-22

申请号：US14333092

申请日：2014-07-16

Applicant: Electronics and Telecommunications Research Institute

Inventor： Yong Ju LEE ,  Jeong Il SEO ,  Jae Hyoun YOO ,  Kyeong Ok KANG ,  Jin Woong KIM ,  Seung Kwon BEACK ,  Jong Mo SUNG ,  Tae Jin LEE

IPC: G10L19/008 ,  G10L19/002

CPC classification number: G10L19/008 ,  G10L19/002

Abstract: Provided are a method of encoding and decoding a multichannel audio signal, and an encoder and a decoder to perform the method. The present invention may perform encoding into consideration of a size of bit to be allocated based on a feature of audio signal for each channel with respect to an audio signal having a plurality of channels, thereby enhancing an encoding efficiency of the multichannel audio signal.

Abstract translation: 提供了一种编码和解码多声道音频信号的方法，以及用于执行该方法的编码器和解码器。 本发明可以考虑到基于每个信道的音频信号的特征相对于具有多个信道的音频信号来分配的比特的大小，从而增强多声道音频信号的编码效率。

公开(公告)号：US20130272525A1

公开(公告)日：2013-10-17

申请号：US13846726

申请日：2013-03-18

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jae Hyoun YOO ,  Jeong Il SEO ,  Tae Jin LEE ,  Kyeong Ok KANG

IPC: H04S7/00

CPC classification number: H04S7/30 ,  G10L19/167 ,  H04S3/002 ,  H04S3/008 ,  H04S2400/03 ,  H04S2420/03

Abstract: An apparatus for providing audio metadata, the apparatus including an audio data generating unit to generate audio metadata including channel information of raw audio data, and an audio metadata transmitting unit to transmit the generated audio metadata to an apparatus for reproducing audio data.

Abstract translation: 一种用于提供音频元数据的装置，该装置包括音频数据生成单元，用于生成包括原始音频数据的频道信息的音频元数据和音频元数据发送单元，用于将生成的音频元数据发送到用于再现音频数据的装置。

公开(公告)号：US20250069609A1

公开(公告)日：2025-02-27

申请号：US18948841

申请日：2024-11-15

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

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 MIDCT-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：US20240235511A9

公开(公告)日：2024-07-11

申请号：US18480259

申请日：2023-10-03

Applicant: Electronics and Telecommunications Research Institute

Inventor： Yong Ju LEE ,  Jae-hyoun YOO ,  Dae Young JANG ,  Soo Young PARK ,  Young Ho JEONG ,  Kyeongok KANG ,  Tae Jin LEE

IPC: H03G7/00

CPC classification number: H03G7/007

Abstract: A rendering method of an object-based audio signal and an apparatus for performing the same are provided. The rendering method of an object-based audio signal includes obtaining a rendered audio signal, performing clipping prevention on the rendered audio signal using a first limiter, mixing a signal output by the first limiter using a mixer, and performing clipping prevention on the mixed signal using a second limiter.

公开(公告)号：US20240105194A1

公开(公告)日：2024-03-28

申请号：US18529830

申请日：2023-12-05

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Seung Kwon BEACK ,  Tae Jin LEE ,  Min Je KIM ,  Kyeongok KANG ,  Dae Young JANG ,  Jin Woo HONG ,  Jeongil SEO ,  Chieteuk AHN ,  Hochong PARK ,  Young-Cheol PARK

IPC: G10L19/087 ,  G10L19/125 ,  G10L19/22 ,  G10L19/26

CPC classification number: G10L19/087 ,  G10L19/125 ,  G10L19/22 ,  G10L19/26

Abstract: Disclosed is an LPC residual signal encoding/decoding apparatus of an MDCT based unified voice and audio encoding device. The LPC residual signal encoding apparatus analyzes a property of an input signal, selects an encoding method of an LPC filtered signal, and encode the LPC residual signal based on one of a real filterbank, a complex filterbank, and an algebraic code excited linear prediction (ACELP).

公开(公告)号：US20230362574A1

公开(公告)日：2023-11-09

申请号：US18320729

申请日：2023-05-19

Applicant: Electronics and Telecommunications Research Institute

Inventor： Yong Ju LEE ,  Jae-hyoun YOO ,  Dae Young JANG ,  Kyeongok KANG ,  Soo Young PARK ,  Tae Jin LEE ,  Young Ho JEONG

IPC: H04S7/00 ,  G06F3/16

CPC classification number: H04S7/303 ,  G06F3/165 ,  H04S2420/01 ,  H04S2400/11

Abstract: A method of rendering object-based audio and an electronic device performing the method are disclosed. The method includes identifying metadata of object-based audio, identifying an audio source distance between the object-based audio and a listener using the metadata, determining a minimum distance of the object-based audio to apply attenuation according to the audio source distance, based on a reference distance of the object-based audio in the metadata, and rendering the object-based audio using the audio source distance and the minimum distance.

公开(公告)号：US20230328472A1

公开(公告)日：2023-10-12

申请号：US18120193

申请日：2023-03-10

Applicant: Electronics and Telecommunications Research Institute

Inventor： Yong Ju LEE ,  Jae-hyoun YOO ,  Dae Young JANG ,  Kyeongok KANG ,  Soo Young PARK ,  Tae Jin LEE ,  Young Ho JEONG

IPC: H04S7/00

CPC classification number: H04S7/302 ,  H04S2420/01 ,  H04S2420/11

Abstract: A method of rendering object audio and electronic device for performing the method are provided. The method includes identifying object audio and metadata including a reference distance of the object audio and an audio source distance between the object audio and a listener, identifying a maximum distance of the object audio determined based on the reference distance, when the audio source distance is less than or equal to the maximum distance, determining a gain of the object audio based on the audio source distance and the reference distance, and rendering the object audio according to the gain of the object audio.

公开(公告)号：US20230267940A1

公开(公告)日：2023-08-24

申请号：US18097054

申请日：2023-01-13

Applicant: Electronics and Telecommunications Research Institute ,  Industry-Academic Cooperation Foundation, Yonsei University

Inventor： In Seon JANG ,  Seung Kwon BEACK ,  Jong Mo SUNG ,  Tae Jin LEE ,  Woo Taek LIM ,  Byeong Ho CHO ,  Hong Goo KANG ,  Ji Hyun LEE ,  Chan Woo LEE ,  Hyung Seob LIM

IPC: G10L19/038 ,  G10L19/002

CPC classification number: G10L19/038 ,  G10L19/002

Abstract: A method, executed by a processor for compressing an audio signal in multiple layers, may comprise: (a) restoring, in a highest layer, an input audio signal as a first signal; (b) restoring, in at least one intermediate layer, a signal obtained by subtracting an upsampled signal, which is obtained by upsampling the audio signal restored in the highest layer or an immediately previous intermediate layer, from the input audio signal as a second signal; and (c) restoring, in a lowest layer, a signal obtained by subtracting an upsampled signal, which is obtained by upsampling the audio signal restored in an intermediate layer immediately before the lowest layer, from the input audio signal as a third signal, wherein the first signal, the second signal, and the third signal are combined to output a final restoration audio signal.