Hwanseok Chung
Director at ETRI, Director, optical access research section
Jung District, Daejeon, South Korea
Summary
👤
Senior🎓
Top SchoolHwanseok Chung is a director and seasoned optical communications researcher with a Ph.D. in electronics engineering from KAIST and over a decade leading optical access and mobile fronthaul research at ETRI. He progressed from postdoctoral work and industry R&D in Japan to directing ETRI’s optical access research section, blending deep academic rigor with applied system development. His work spans CWDM/DWDM systems, wavelength conversion, regenerators, and coherent communications, and he has been recognized with multiple best paper awards. Unusually for a director-level researcher, he also contributes practical code fixes and data-prep improvements to open-source projects like the widely used espnet speech toolkit, showing hands-on engagement with experimental reproducibility and tooling. Based in Daejeon, South Korea, he combines a strong publication record with operational leadership driving next-generation optical access solutions.
11 years of coding experience
10 years of employment as a software developer
Ph.D, EE, Ph.D, EE at KAIST
English
Github Skills (10)
data-preprocessing10
speech-recognition10
bash10
speech-synthesis10
dataprep10
python10
machine-translation9
deep-learning9
pytorch9
kaldi9
Programming languages (1)
Github contributions (5)
espnet/espnet
Jun 2020 - Dec 2020
End-to-End Speech Processing Toolkit
Role in this project:
Back-end Developer
Back-end DeveloperContributions:28 commits, 4 PRs, 36 comments in 6 months
Contributions summary:Hwanseok's commits primarily involve modifications to data preparation scripts and experimental results within the End-to-End Speech Processing Toolkit. These changes include fixing errors in data preparation scripts related to specific datasets (WSJ), updating experimental results by modifying scripts to show CER and WER scores, and merging updates from the upstream master branch. Additionally, there are changes made to the codebase, including the addition of a recipe using morfessor to compare with Kaldi and other updates.
speech-recognitionspeech-separationchainerspoken-language-understandingspeech-processing
hchung12/espnet-asr
Sep 2020 - Dec 2020
Contributions:26 commits, 23 pushes, 1 branch in 3 months
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