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公开(公告)号：US09680999B2
公开(公告)日：2017-06-13
申请号：US14266616
申请日：2014-04-30
Inventor： Inseon Jang
CPC classification number: H04M3/568
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.
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Patent Agency Ranking
公开(公告)号：US12205605B2
公开(公告)日：2025-01-21
申请号：US17670172
申请日：2022-02-11
Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
Inventor： Inseon Jang , Seung Kwon Beack , Jongmo Sung , Tae Jin Lee , Woo-Taek Lim , Hong-Goo Kang , Jihyun Lee , Chanwoo Lee , Hyungseob Lim
IPC: G10L19/038 , G10L19/00 , G10L25/30
Abstract: An audio signal encoding and decoding method using a neural network model, and an encoder and decoder for performing the same are disclosed. A method of encoding an audio signal using a neural network model, the method may include identifying an input signal, generating a quantized latent vector by inputting the input signal into a neural network model encoding the input signal, and generating a bitstream corresponding to the quantized latent vector, wherein the neural network model may include i) a feature extraction layer generating a latent vector by extracting a feature of the input signal, ii) a plurality of downsampling blocks downsampling the latent vector, and iii) a plurality of quantization blocks performing quantization of a downsampled latent vector.
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公开(公告)号：US12159640B2
公开(公告)日：2024-12-03
申请号：US17884364
申请日：2022-08-09
Inventor： Jongmo Sung , Seung Kwon Beack , Tae Jin Lee , Woo-taek Lim , Inseon Jang
Abstract: Provided is an encoding method according to various example embodiments and an encoder performing the method. The encoding method includes outputting a linear prediction (LP) coefficients bitstream and a residual signal by performing a linear prediction analysis on an input signal, outputting a first latent signal obtained by encoding a periodic component of the residual signal, using a first neural network module, outputting a first bitstream obtained by quantizing the first latent signal, using a quantization module, outputting a second latent signal obtained by encoding an aperiodic component of the residual signal, using the first neural network module, and outputting a second bitstream obtained by quantizing the second latent signal, using the quantization module, wherein the aperiodic component of the residual signal is calculated based on a periodic component of the residual signal decoded from the quantized first latent signal output by de-quantizing the first bitstream.
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公开(公告)号：US11978465B2
公开(公告)日：2024-05-07
申请号：US17507746
申请日：2021-10-21
Inventor： Seung Kwon Beack , Jongmo Sung , Tae Jin Lee , Woo-taek Lim , Inseon Jang
IPC: G10L19/13 , G10L19/032 , G10L19/06
CPC classification number: G10L19/13 , G10L19/032 , G10L19/06
Abstract: A method of generating a residual signal performed by an encoder includes identifying an input signal including an audio sample, generating a first residual signal from the input signal using linear predictive coding (LPC), generating a second residual signal having a less information amount than the first residual signal by transforming the first residual signal, transforming the second residual signal into a frequency domain, and generating a third residual signal having a less information amount than the second residual signal from the transformed second residual signal using frequency-domain prediction (FDP) coding.
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15.发明授权公开(公告)号：US11804230B2
公开(公告)日：2023-10-31
申请号：US17711908
申请日：2022-04-01
Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , Gwangju Institute of Science and Technology
Inventor： Inseon Jang , Seung Kwon Beack , Jongmo Sung , Tae Jin Lee , Woo-taek Lim , Jongwon Shin , Youngju Cheon , Sangwook Han , Soojoong Hwang
IPC: G10L19/02 , G10L19/038 , G06N3/04
CPC classification number: G10L19/038 , G06N3/04 , G10L19/02
Abstract: An audio encoding/decoding apparatus and method using vector quantized residual error features are disclosed. An audio signal encoding method includes outputting a bitstream of a main codec by encoding an original signal, decoding the bitstream of the main codec, determining a residual error feature vector from a feature vector of a decoded signal and a feature vector of the original signal, and outputting a bitstream of additional information by encoding the residual error feature vector.
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16.发明申请公开(公告)号：US20220020385A1
公开(公告)日：2022-01-20
申请号：US17377157
申请日：2021-07-15
Inventor： Seung Kwon Beack , Jongmo Sung , Mi Suk Lee , Tae Jin Lee , Woo-taek Lim , Inseon Jang , Jin Soo Choi
IPC: G10L19/06 , G10L19/032
Abstract: An audio signal encoding method performed by an encoder includes identifying a time-domain audio signal in a unit of blocks, quantizing a linear prediction coefficient extracted from a combined block in which a current original block of the audio signal and a previous original block chronologically adjacent to the current original block using frequency-domain linear predictive coding (LPC), generating a temporal envelope by dequantizing the quantized linear prediction coefficient, extracting a residual signal from the combined block based on the temporal envelope, quantizing the residual signal by one of time-domain quantization and frequency-domain quantization, and transforming the quantized residual signal and the quantized linear prediction coefficient into a bitstream.
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