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438 results on '"Lee, Jung Suk"'

1. FoVNet: Configurable Field-of-View Speech Enhancement with Low Computation and Distortion for Smart Glasses

Author

Xu, Zhongweiyang, Aroudi, Ali, Tan, Ke, Pandey, Ashutosh, Lee, Jung-Suk, Xu, Buye, and Nesta, Francesco

Subjects
Computer Science - Sound, Computer Science - Multimedia, Electrical Engineering and Systems Science - Audio and Speech Processing, Electrical Engineering and Systems Science - Signal Processing
Abstract

This paper presents a novel multi-channel speech enhancement approach, FoVNet, that enables highly efficient speech enhancement within a configurable field of view (FoV) of a smart-glasses user without needing specific target-talker(s) directions. It advances over prior works by enhancing all speakers within any given FoV, with a hybrid signal processing and deep learning approach designed with high computational efficiency. The neural network component is designed with ultra-low computation (about 50 MMACS). A multi-channel Wiener filter and a post-processing module are further used to improve perceptual quality. We evaluate our algorithm with a microphone array on smart glasses, providing a configurable, efficient solution for augmented hearing on energy-constrained devices. FoVNet excels in both computational efficiency and speech quality across multiple scenarios, making it a promising solution for smart glasses applications., Comment: Accepted by INTERSPEECH2024

Published
2024

2. EasyCom: An Augmented Reality Dataset to Support Algorithms for Easy Communication in Noisy Environments

Author

Donley, Jacob, Tourbabin, Vladimir, Lee, Jung-Suk, Broyles, Mark, Jiang, Hao, Shen, Jie, Pantic, Maja, Ithapu, Vamsi Krishna, and Mehra, Ravish

Subjects
Computer Science - Sound, Computer Science - Computer Vision and Pattern Recognition, Computer Science - Machine Learning, Electrical Engineering and Systems Science - Audio and Speech Processing, Electrical Engineering and Systems Science - Signal Processing
Abstract

Augmented Reality (AR) as a platform has the potential to facilitate the reduction of the cocktail party effect. Future AR headsets could potentially leverage information from an array of sensors spanning many different modalities. Training and testing signal processing and machine learning algorithms on tasks such as beam-forming and speech enhancement require high quality representative data. To the best of the author's knowledge, as of publication there are no available datasets that contain synchronized egocentric multi-channel audio and video with dynamic movement and conversations in a noisy environment. In this work, we describe, evaluate and release a dataset that contains over 5 hours of multi-modal data useful for training and testing algorithms for the application of improving conversations for an AR glasses wearer. We provide speech intelligibility, quality and signal-to-noise ratio improvement results for a baseline method and show improvements across all tested metrics. The dataset we are releasing contains AR glasses egocentric multi-channel microphone array audio, wide field-of-view RGB video, speech source pose, headset microphone audio, annotated voice activity, speech transcriptions, head bounding boxes, target of speech and source identification labels. We have created and are releasing this dataset to facilitate research in multi-modal AR solutions to the cocktail party problem., Comment: Dataset is available at: https://github.com/facebookresearch/EasyComDataset

Published
2021

41. Elucidating the Functional Roles of Helper and Cytotoxic T Cells in the Cell-Mediated Immune Responses of Olive Flounder (Paralichthys olivaceus)

Author

Lee Jung Suk, Jaesung Kim, Jae Wook Jung, Ae Rin Lee, Young Rim Kim, Kim D. Thompson, Tae Sung Jung, Hyeongsu Kim, and Jassy Mary S. Lazarte

Subjects
0301 basic medicine, lymphocytes, medicine.drug_class, olive flounder, Biology, Monoclonal antibody, Catalysis, Virus, Inorganic Chemistry, lcsh:Chemistry, 03 medical and health sciences, 0302 clinical medicine, Immune system, Antigen, medicine, Cytotoxic T cell, Physical and Theoretical Chemistry, Molecular Biology, lcsh:QH301-705.5, Spectroscopy, helper T cells, cytotoxic T cells, Organic Chemistry, General Medicine, Acquired immune system, biology.organism_classification, Molecular biology, Olive flounder, Computer Science Applications, 030104 developmental biology, lcsh:Biology (General), lcsh:QD1-999, monoclonal antibody, CD8, 030215 immunology
Abstract

In higher vertebrates, helper and cytotoxic T cells, referred to as CD4 and CD8 T lymphocytes, respectively, are mainly associated with adaptive immunity. The adaptive immune system in teleosts involves T cells equivalent to those found in mammals. We previously generated monoclonal antibodies (mAbs) against olive flounder (Paralichthys olivaceus) CD4 T cells, CD4-1 and CD4-2, and used these to describe the olive flounder&rsquo, s CD4 Tcell response during a viral infection. In the present study, we successfully produced mAbs against CD8 T lymphocytes and their specificities were confirmed using immuno-blotting, immunofluorescence staining, flow cytometry analysis andreverse transcription polymerase chain reaction (RT-PCR). The results showed that these mAbs are specific for CD8 T lymphocytes. We also investigated variations in CD4 and CD8 T cells populations, and analyzed the expression of immune-related genes expressed by these cells in fish infected with nervous necrosis virus or immunized with thymus dependent and independent antigens. We found that both CD4 and CD8 T lymphocyte populations significantly increased in these fish and Th1-related genes were up-regulated compared to the control group. Collectively, these findings suggest that the CD4 and CD8 T lymphocytes in olive flounder are similar to the helper and cytotoxic T cells found in mammals, and Th1 and cytotoxic immune responses are primarily involved in the early adaptive immune response against extracellular antigens.

Published
2021

50. Fatty Acid Derivatives Isolated from the Oil of Persea americana (Avocado) Protects against Neomycin-Induced Hair Cell Damage

Author

Park, SeonJu, primary, Jeong, Seo Yule, additional, Nam, Youn Hee, additional, Park, Jun Hyung, additional, Rodriguez, Isabel, additional, Shim, Ji Heon, additional, Yasmin, Tamanna, additional, Kwak, Hee Jae, additional, Oh, Youngse, additional, Oh, Mira, additional, Lee, Kye Wan, additional, Lee, Jung Suk, additional, Kim, Do Hoon, additional, Park, Yu Hwa, additional, Moon, In Seok, additional, Choung, Se-Young, additional, Jeong, Kwang Won, additional, Hong, Bin Na, additional, Kim, Seung Hyun, additional, and Kang, Tong Ho, additional

Published
2021
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