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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：US11823688B2
公开(公告)日：2023-11-21
申请号：US17390753
申请日：2021-07-30
Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , The Trustees of Indiana University
Inventor： Woo-taek Lim , Seung Kwon Beack , Jongmo Sung , Tae Jin Lee , Inseon Jang , Minje Kim
IPC: G10L19/008 , G06N3/04 , G10L19/032 , G10L19/24
CPC classification number: G10L19/008 , G06N3/04 , G10L19/032
Abstract: Disclosed are a method of encoding and decoding an audio signal and an encoder and a decoder performing the method. The method of encoding an audio signal includes identifying an input signal, and generating a bitstring of each encoding layer by applying, to the input signal, an encoding model including a plurality of successive encoding layers that encodes the input signal, in which a current encoding layer among the encoding layers is trained to generate a bitstring of the current encoding layer by encoding an encoded signal which is a signal encoded in a previous encoding layer and quantizing an encoded signal which is a signal encoded in the current encoding layer.
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公开(公告)号：US11783844B2
公开(公告)日：2023-10-10
申请号：US17527351
申请日：2021-11-16
Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , Gwangju Institute of Science and Technology
Inventor： Woo-taek Lim , Seung Kwon Beack , Jongmo Sung , Tae Jin Lee , Inseon Jang , Jong Won Shin , Soojoong Hwang , Youngju Cheon , Sangwook Han
Abstract: Disclosed are methods of encoding and decoding an audio signal using side information, and an encoder and a decoder for performing the methods. The method of encoding an audio signal using side information includes identifying an input signal, the input signal being an original audio signal, extracting side information from the input signal using a learning model trained to extract side information from a feature vector of the input signal, encoding the input signal, and generating a bitstream by combining the encoded input signal and the side information.
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公开(公告)号：US11580999B2
公开(公告)日：2023-02-14
申请号：US17331416
申请日：2021-05-26
Inventor： Seung Kwon Beack , Jongmo Sung , Mi Suk Lee , Tae Jin Lee , Woo-taek Lim , Inseon Jang
IPC: G10L19/022 , G10L19/06 , G10L19/16 , G10L19/035
Abstract: An audio signal encoding method performed by an encoder includes identifying an audio signal of a time domain in units of a block, generating a combined block by combining i) a current original block of the audio signal and ii) a previous original block chronologically adjacent to the current original block, extracting a first residual signal of a frequency domain from the combined block using linear predictive coding of a time domain, overlapping chronologically adjacent first residual signals among first residual signals converted into a time domain, and quantizing a second residual signal of a time domain extracted from the overlapped first residual signal by converting the second residual signal of the time domain into a frequency domain using linear predictive coding of a frequency domain.
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Patent Agency Ranking
公开(公告)号：US12223970B2
公开(公告)日：2025-02-11
申请号：US18103993
申请日：2023-01-31
Inventor： Jongmo Sung , Seung Kwon Beack , Tae Jin Lee , Woo-taek Lim , Inseon Jang , Byeongho Cho
IPC: G10L19/087 , G10L19/038 , G10L19/13 , G10L25/30 , G10L19/02
Abstract: An encoding method, a decoding method, an encoder for performing the encoding method, and a decoder for performing the decoding method are provided. The encoding method includes outputting LP coefficients bitstream and a residual signal by performing an LP analysis on an input signal, outputting a first latent signal obtained by encoding a periodic component of the residual signal, a second latent signal obtained by encoding a non-periodic component of the residual signal, and a weight vector for each of the first latent signal and the second latent signal, using a first neural network module, and outputting a first bitstream obtained by quantizing the first latent signal, a second bitstream obtained by quantizing the second latent signal, and a weight bitstream obtained by quantizing the weight vector, using a quantization module.
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公开(公告)号：US12223426B2
公开(公告)日：2025-02-11
申请号：US18166407
申请日：2023-02-08
Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , YONSEI UNIVERSITY WONJU INDUSTRY-ACADEMIC COOPERATION FOUNDATION
Inventor： Jongmo Sung , Seung Kwon Beack , Tae Jin Lee , Woo-taek Lim , Inseon Jang , Byeongho Cho , Young Cheol Park , Joon Byun , Seungmin Shin
IPC: G10L19/00 , G06N3/08 , G10L19/028 , G10L19/038 , G10L25/30 , G10L25/60 , G10L25/69 , G06N3/084 , G10L15/00 , G10L19/22
Abstract: Provided is a method and apparatus for designing and testing an audio codec using quantization based on white noise modeling. A neural network-based audio encoder design method includes generating a quantized latent vector and a reconstructed signal corresponding to an input signal by using a white noise modeling-based quantization process, computing a total loss for training a neural network-based audio codec, based on the input signal, the reconstruction signal, and the quantized latent vector, training the neural network-based audio codec by using the total loss, and validating the trained neural network-based audio codec to select the best neural network-based audio codec.
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公开(公告)号：US11694703B2
公开(公告)日：2023-07-04
申请号：US17672041
申请日：2022-02-15
Inventor： Woo-taek Lim , Seung Kwon Beack , Jongmo Sung , Tae Jin Lee , Inseon Jang
Abstract: An audio signal encoding and decoding method using a learning model, a training method of the learning model, and an encoder and decoder that perform the method, are disclosed. The audio signal decoding method may include extracting a first residual signal and a first linear prediction coefficient by decoding a bitstream received from an encoder, generating a first audio signal from the first residual signal using the first linear prediction coefficient, generating a second linear prediction coefficients and a second residual signal from the first audio signal, obtaining a third linear prediction coefficient by inputting the second linear prediction coefficient into a trained learning model, and generating a second audio signal from the second residual signal using the third linear prediction coefficient.
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9.发明授权公开(公告)号：US11651778B2
公开(公告)日：2023-05-16
申请号：US17520895
申请日：2021-11-08
Inventor： Woo-taek Lim , Seung Kwon Beack , Jongmo Sung , Tae Jin Lee , Inseon Jang , Jong-Won Seok , Yunsu Kim
IPC: G10L19/16 , G10L19/02 , G10L25/30 , G10L19/038
CPC classification number: G10L19/038 , G10L19/02 , G10L19/167 , G10L25/30
Abstract: Disclosed are methods of encoding and decoding an audio signal, and an encoder and a decoder for performing the methods. The method of encoding an audio signal includes identifying an input signal corresponding to a low frequency band of the audio signal, windowing the input signal, generating a first latent vector by inputting the windowed input signal to a first encoding model, transforming the windowed input signal into a frequency domain, generating a second latent vector by inputting the transformed input signal to a second encoding model, generating a final latent vector by combining the first latent vector and the second latent vector, and generating a bitstream corresponding to the final latent vector.
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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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