公开(公告)号：US11887612B2

公开(公告)日：2024-01-30

申请号：US17895233

申请日：2022-08-25

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：US09711159B2

公开(公告)日：2017-07-18

申请号：US14605006

申请日：2015-01-26

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: G10L19/00 ,  G10L21/00 ,  G10L19/12 ,  G10L19/008 ,  G10L19/20 ,  G10L19/22

CPC classification number: G10L19/12 ,  G10L19/008 ,  G10L19/02 ,  G10L19/20 ,  G10L19/22 ,  G11C2207/16

Abstract: An apparatus and a method for integrally encoding and decoding a speech signal and a audio signal. The encoding apparatus may include: an input signal analyzer to analyze a characteristic of an input signal; a first conversion encoder to convert the input signal to a frequency domain signal, and to encode the input signal when the input signal is a audio characteristic signal; a Linear Predictive Coding (LPC) encoder to perform LPC encoding of the input signal when the input signal is a speech characteristic signal; a frequency band expander with the spectral band replication (SBR) standard for expanding the frequency band of the input signal whose output is transmitted to either the first conversion encoder or the LPC encoder based on the input characteristic; and a bitstream generator to generate a bitstream using an output signal of the first conversion encoder and an output signal of the LPC encoder.

公开(公告)号：US09378749B2

公开(公告)日：2016-06-28

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: G10L21/00 ,  G10L19/125 ,  G10L19/22

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：US20150095023A1

公开(公告)日：2015-04-02

申请号：US14534781

申请日：2014-11-06

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 ,  G10L19/12

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

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.

Abstract translation: 提供了一种用于对语音信号和音频信号进行整体编码和解码的编码装置，并且可以包括：输入信号分析器，用于分析输入信号的特性; 立体声编码器，当输入信号是立体声信号时，将输入信号向下混合成单声道信号，并提取立体声声像信息; 用于扩展输入信号的频带的频带扩展器; 用于转换采样率的采样率转换器; 语音信号编码器，当所述输入信号是语音特征信号时，使用语音编码模块对所述输入信号进行编码; 音频信号编码器，当所述输入信号是音频特征信号时，使用音频编码模块对所述输入信号进行编码; 以及比特流发生器，用于生成比特流。

公开(公告)号：US11778376B2

公开(公告)日：2023-10-03

申请号：US17582209

申请日：2022-01-24

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

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

IPC: H04R5/02 ,  G10H1/20 ,  H04R3/04

CPC classification number: H04R3/04 ,  G10H1/20

Abstract: An apparatus and method for pitch-shifting an audio signal with low complexity are disclosed. The method includes identifying a distance between an audio object included in the audio signal and a listener, checking whether the distance between the audio object and the listener decreases, and performing stepwise stretching pitch-shifting of repeatedly using at least one of frequency components of the audio signal when the distance between the audio object and the listener decreases.

公开(公告)号：US11570571B2

公开(公告)日：2023-01-31

申请号：US17199757

申请日：2021-03-12

Applicant: Electronics and Telecommunications Research Institute

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

IPC: H04S7/00 ,  G10L19/008 ,  H04S3/00

Abstract: A method and apparatus for performing binaural rendering of an audio signal are provided. The method includes identifying an input signal that is based on an object, and metadata that includes distance information indicating a distance to the object, generating a binaural filter that is based on the metadata, using a binaural room impulse response, obtaining a binaural filter to which a low-pass filter (LPF) is applied, using a frequency response control that is based on the distance information, and generating a binaural-rendered output signal by performing a convolution of the input signal and the binaural filter to which the LPF is applied.

公开(公告)号：US11430457B2

公开(公告)日：2022-08-30

申请号：US16846272

申请日：2020-04-10

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 ,  G10L19/22 ,  G10L19/125 ,  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：US11222645B2

公开(公告)日：2022-01-11

申请号：US16562921

申请日：2019-09-06

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jeongil Seo ,  Seungkwon Beack ,  Kyeongok Kang ,  Jin Woo Hong ,  Jinwoong Kim ,  Chieteuk Ahn ,  Kwangki Kim ,  Minsoo Hahn

IPC: G10L19/20 ,  G10L19/008

Abstract: A multi-object audio encoding and decoding apparatus supporting a post downmix signal may be provided. The multi-object audio encoding apparatus may include: an object information extraction and downmix generation unit to generate object information and a downmix signal from input object signals; a parameter determination unit to determine a downmix information parameter using the extracted downmix signal and the post downmix signal; and a bitstream generation unit to combine the object information and the downmix information parameter, and to generate an object bitstream.

公开(公告)号：US10714103B2

公开(公告)日：2020-07-14

申请号：US16557238

申请日：2019-08-30

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: G10L19/20 ,  G10L19/008 ,  G10L19/02 ,  G10L19/04 ,  G10L19/12 ,  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：US10580417B2

公开(公告)日：2020-03-03

申请号：US15031275

申请日：2014-10-22

Applicant: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY ,  WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Taegyu Lee ,  Hyunoh Oh ,  Youngcheol Park ,  Daehee Youn ,  Jeongil Seo ,  Yongju Lee ,  Seungkwon Beack ,  Kyeongok Kang ,  Daeyoung Jang

IPC: G10L19/008 ,  H04S3/00 ,  H04R5/033 ,  H04R3/00

Abstract: The present invention relates to a method and an apparatus for binaural rendering an audio signal using variable order filtering in frequency domain. To this end, provided are a method for processing an audio signal including: receiving an input audio signal; receiving a set of truncated subband filter coefficients for filtering each subband signal of the input audio signal, the set of truncated subband filter coefficients being constituted by one or more FFT filter coefficients generated by performing FFT by a predetermined block size; generating at least one subframe for each subband; generating at least one filtered subframe for each subband; performing inverse FFT on the filtered subframe for each subband; and generating a filtered subband signal by overlap-adding the transformed subframe for each subband and an apparatus for processing an audio signal using the same.