-
公开(公告)号：US20250104721A1
公开(公告)日：2025-03-27
申请号：US18686568
申请日：2022-12-15
Inventor： Seung Kwon BEACK , Jongmo SUNG , Tae Jin LEE , Woo-taek LIM , Inseon JANG , Byeongho CHO
IPC: G10L19/032 , G10L19/03
Abstract: Disclosed are a device and method for audio signal processing. The audio signal processing device according to an embodiment includes a receiver configured to receive a bitstream corresponding to a compressed audio signal and a processor. The processor may be configured to generate a real restoration signal or a complex restoration signal by performing inverse quantization on real data of the bitstream or complex data of the bitstream, generate a result of real Frequency Domain Noise Shaping (FDNS) synthesis or a result of complex FDNS synthesis by performing FDNS synthesis on the real restoration signal or the complex restoration signal, and generate a restored audio signal by performing frequency-to-time transform on the result of the real FDNS synthesis or the result of the complex FDNS synthesis.
-
公开(公告)号：US20240135941A1
公开(公告)日：2024-04-25
申请号：US18358646
申请日：2023-07-24
Applicant: Electronics and Telecommunications Research Institute , Gwangju Institute of Science and Technology
Inventor： Inseon JANG , Seung Kwon BEACK , Tae Jin LEE , Jongmo SUNG , Woo-taek LIM , Byeongho CHO , Jongwon SHIN
IPC: G10L19/02
CPC classification number: G10L19/02
Abstract: Provided is an encoding apparatus including a memory configured to store instructions and a processor electrically connected to the memory and configured to execute the instructions, wherein the processor may be configured to perform a plurality of operations, when the instructions are executed by the processor, wherein the plurality of operations may include obtaining an input audio signal, generating an embedded audio signal by embedding signal components of a second frequency band of the input audio signal in a first frequency band of the input audio signal, generating additional information associated with the first frequency band and the second frequency band, generating an encoded audio signal by encoding the embedded audio signal, and formatting the encoded audio signal and the additional information into a bitstream.
-
公开(公告)号：US20220005487A1
公开(公告)日：2022-01-06
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
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.
-
公开(公告)号：US20190180763A1
公开(公告)日：2019-06-13
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
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.
-
公开(公告)号：US20240420712A1
公开(公告)日：2024-12-19
申请号：US18732758
申请日：2024-06-04
Inventor： Byeongho CHO , Seung Kwon BEACK , Jung Won KANG , Soo Young PARK , Jongmo SUNG , Tae Jin LEE , Woo-taek LIM , Inseon JANG
IPC: G10L19/028 , G10L19/02 , G10L19/035 , G10L19/06
Abstract: A method of encoding/decoding an audio signal and a device for performing the same are provided. The method of encoding an audio signal includes generating, based on the audio signal, a linear prediction coding (LPC) bitstream and a frequency-domain signal of the audio signal, generating, based on the LPC bitstream and the frequency-domain signal, a first residual signal including information on a frequency envelope of the frequency-domain signal, and outputting a second residual signal by processing a first residual signal through one of a plurality of signal processing paths.
-
Patent Agency Ranking
6.发明公开公开(公告)号：US20230274141A1
公开(公告)日：2023-08-31
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: G06N3/08 , G10L19/038 , G10L25/30 , G10L19/028 , G10L25/69 , G10L25/60
CPC classification number: G06N3/08 , G10L19/038 , G10L25/30 , G10L19/028 , G10L25/69 , G10L25/60
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.
-
公开(公告)号：US20220262378A1
公开(公告)日：2022-08-18
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.
-
公开(公告)号：US20220238126A1
公开(公告)日：2022-07-28
申请号：US17570489
申请日：2022-01-07
Inventor： Jongmo SUNG , Seung Kwon BEACK , Tae Jin LEE , Woo-taek LIM , Inseon JANG
IPC: G10L19/032 , G10L19/008 , G10L25/90 , G10L25/30
Abstract: Methods of encoding and decoding an audio signal using a learning model and an encoder and a decoder for performing the methods are disclosed. A method of encoding an audio signal using a learning model may include extracting pitch information of the audio signal, determining a dilation factor of a receptive field of a first expandable neural network block to extract a feature map from the audio signal based on the pitch information, generating a first feature map of the audio signal using the first expandable neural network block in which the dilation factor is determined, determining a second feature map by inputting the first feature map into a second expandable neural network block to process the first feature map, and converting the second feature map and the pitch information into a bitstream.
-
公开(公告)号：US20220157326A1
公开(公告)日：2022-05-19
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
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.
-
公开(公告)号：US20210166701A1
公开(公告)日：2021-06-03
申请号：US17104400
申请日：2020-11-25
Inventor： Woo-taek LIM , Seung Kwon BEACK , Jongmo SUNG , Mi Suk LEE , Tae Jin LEE
IPC: G10L19/002
Abstract: An audio signal encoding/decoding device and method using a filter bank is disclosed. The audio signal encoding method includes generating a plurality of first audio signals by performing filtering on an input audio signal using an analysis filter bank, generating a plurality of second audio signals by performing downsampling on the first audio signals, and outputting a bitstream by encoding and quantizing the second audio signals.
-
-
-
-
-
-
-
-
-
Search Results
43
records
(took 0.019 seconds)
