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公开(公告)号：US11862183B2
公开(公告)日：2024-01-02
申请号：US17368390
申请日：2021-07-06
Inventor： Jongmo Sung , Seung Kwon Beack , Mi Suk Lee , Tae Jin Lee , Woo-taek Lim , Inseon Jang
IPC: G10L19/032
CPC classification number: G10L19/032
Abstract: An audio signal encoding and decoding method using a neural network model, a method of training the neural network model, and an encoder and decoder performing the methods are disclosed. The encoding method includes computing the first feature information of an input signal using a recurrent encoding model, computing an output signal from the first feature information using a recurrent decoding model, calculating a residual signal by subtracting the output signal from the input signal, computing the second feature information of the residual signal using a nonrecurrent encoding model, and converting the first feature information and the second feature information to a bitstream.
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公开(公告)号：US11664037B2
公开(公告)日：2023-05-30
申请号：US17326035
申请日：2021-05-20
Applicant: Electronics and Telecommunications Research Institute , The Trustees of Indiana University
Inventor： Woo-taek Lim , Seung Kwon Beack , Jongmo Sung , Mi Suk Lee , Tae Jin Lee , Inseon Jang , Minje Kim , Haici Yang
IPC: G10L19/032 , G10L21/0272
CPC classification number: G10L19/032 , G10L21/0272
Abstract: Methods of encoding and decoding a speech signal using a neural network model that recognizes sound sources, and encoding and decoding apparatuses for performing the methods are provided. A method of encoding a speech signal includes identifying an input signal for a plurality of sound sources; generating a latent signal by encoding the input signal; obtaining a plurality of sound source signals by separating the latent signal for each of the plurality of sound sources; determining a number of bits used for quantization of each of the plurality of sound source signals according to a type of each of the plurality of sound sources; quantizing each of the plurality of sound source signals based on the determined number of bits; and generating a bitstream by combining the plurality of quantized sound source signals.
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3.发明授权公开(公告)号：US11205442B2
公开(公告)日：2021-12-21
申请号：US16562110
申请日：2019-09-05
Inventor： Young Ho Jeong , Sang Won Suh , Tae Jin Lee , Woo-taek Lim , Hui Yong Kim
Abstract: Provided is a sound event recognition method that may improve a sound event recognition performance using a correlation between difference sound signal feature parameters based on a neural network, in detail, that may extract a sound signal feature parameter from a sound signal including a sound event, and recognize the sound event included in the sound signal by applying a convolutional neural network (CNN) trained using the sound signal feature parameter.
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公开(公告)号：US11562757B2
公开(公告)日：2023-01-24
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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公开(公告)号：US11133015B2
公开(公告)日：2021-09-28
申请号：US16180298
申请日：2018-11-05
Inventor： Seung Kwon Beack , Woo-taek Lim , Jongmo Sung , Mi Suk Lee , Tae Jin Lee , Hui Yong Kim
IPC: G10L19/04 , G10L25/30 , G10L19/008
Abstract: A method of predicting a channel parameter of an original signal from a downmix signal is disclosed. The method may include generating an input feature map to be used to predict a channel parameter of the original signal based on a downmix signal of an original signal, determining an output feature map including a predicted parameter to be used to predict the channel parameter by applying the input feature map to a neural network, generating a label map including information associated with the channel parameter of the original signal, and predicting the channel parameter of the original signal by comparing the output feature map and the label map.
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Patent Agency Ranking
公开(公告)号：US10540988B2
公开(公告)日：2020-01-21
申请号：US16196356
申请日：2018-11-20
Inventor： Woo-taek Lim
Abstract: Disclosed is a sound event detecting method including receiving an audio signal, transforming the audio signal into a two-dimensional (2D) signal, extracting a feature map by training a convolutional neural network (CNN) using the 2D signal, pooling the feature map based on a frequency, and determining whether a sound event occurs with respect to each of at least one time interval based on a result of the pooling.
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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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9.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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10.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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