Xuanjun Chen

Xuanjun Chen (陳炫均)

Ph.D. Candidate, NTU EECS · Taipei, Taiwan

I am a Ph.D. student at National Taiwan University (NTU), advised by Hung-yi Lee and Jyh-Shing Roger Jang. Prior to this, I earned my M.S. and B.S. in Computer Science from NTU (2023) and Taiwan Tech (2020). Currently, my research focuses on speech tokenization, speech generation, and spoken language modeling.

Previously, my research spanned three threads: I led work on audio deepfakes (SingGraph, CodecFake+, SASTNet), contributed to large audio-language models and benchmarks (DeSTA 2.5-Audio, Dynamic-SUPERB Phase-2, Codec-SUPERB), and mentored research on LLMs for RAG efficiency and their inherent limits.

Feel free to reach out to me at d12942018 [at] ntu.edu.tw, or find me on LinkedIn, Scholar, GitHub, 𝕏.

Selected Publications (* equal contribution)

[1]
CodecFake+: Codec-Based Resynthesized Data as a Proxy for Detecting CodecFake Speech
Xuanjun Chen*, Jiawei Du*, Haibin Wu, Lin Zhang, I-Ming Lin, ..., Jyh-Shing Roger Jang, Hung-yi Lee
TASLP 2026 bib · arXiv · IEEE · Project · HF · Code
[2]
How Does Instrumental Music Help SingFake Detection?
Xuanjun Chen, Chia-Yu Hu, I-Ming Lin, Yi-Cheng Lin, I-Hsiang Chiu, ..., Hung-yi Lee, Jyh-Shing Roger Jang
ICASSP 2026 bib · arXiv
[3]
DeSTA2.5-Audio: Toward General-Purpose Large Audio Language Model with Self-Generated Cross-Modal Alignment
Ke-Han Lu, Zhehuai Chen, Szu-Wei Fu, ..., Xuanjun Chen, ..., Boris Ginsburg, Yu-Chiang Frank Wang, Hung-yi Lee
TASLP 2026 bib · arXiv · Code
[4]
Dynamic-SUPERB Phase-2: A Collaboratively Expanding Benchmark for Measuring the Capabilities of Spoken Language Models with 180 Tasks
Chien-yu Huang, Wei-Chih Chen, Shu-wen Yang, ..., Xuanjun Chen, ..., Shinji Watanabe, Hung-yi Lee
ICLR 2025 bib · arXiv · OpenReview · Code
[5]
A Preliminary Study of RAG for Taiwanese Historical Archives
Claire Lin*, Bo-Han Feng*, Xuanjun Chen*, Te-Lun Yang, Hung-yi Lee, Jyh-Shing Roger Jang
ROCLING 2025 Best Paper Award bib · arXiv · Anthology
[6]
Towards Generalized Source Tracing for Codec-Based Deepfake Speech
Xuanjun Chen*, I-Ming Lin*, Lin Zhang, Haibin Wu, Hung-yi Lee, Jyh-Shing Roger Jang
IEEE ASRU 2025 Best Student Paper nominee bib · arXiv · Code
[7]
Codec-Based Deepfake Source Tracing via Neural Audio Codec Taxonomy
Xuanjun Chen*, I-Ming Lin*, Lin Zhang, Jiawei Du, Haibin Wu, Hung-yi Lee, Jyh-Shing Roger Jang
INTERSPEECH 2025 bib · arXiv · ISCA · Code
[8]
Singing Voice Graph Modeling for SingFake Detection
Xuanjun Chen, Haibin Wu, Jyh-Shing Roger Jang, Hung-yi Lee
INTERSPEECH 2024 (Oral) bib · arXiv · ISCA · Code · Lightning Talk
[9]
Codec-SUPERB: An In-Depth Analysis of Sound Codec Models
Haibin Wu, Ho-Lam Chung, Yi-Cheng Lin, ..., Xuanjun Chen, ..., Kai-Wei Chang, Alexander H. Liu, Hung-yi Lee
Findings of ACL 2024 bib · arXiv · Anthology · Leaderboard · Code · HF
[10]
Codec-SUPERB @ SLT 2024: A lightweight benchmark for neural codec models
Haibin Wu, Xuanjun Chen, Yi-Cheng Lin, Jiawei Du, Kai-Wei Chang, ..., Shinji Watanabe, Hung-yi Lee
IEEE SLT 2024 bib · arXiv · IEEE Xplore
[11]
Towards audio language modeling-an overview
Haibin Wu, Xuanjun Chen, Yi-Cheng Lin, Kai-wei Chang, Ho-Lam Chung, Alexander Liu, Hung-yi Lee
Tech Report, Feb. 2024 bib · arXiv · Awesome

Experience

  • : Research Intern, Shanda AI Research Tokyo, Japan
  • : Ph.D. in Communication EngineeringCommunication Engineering, National Taiwan University
  • : M.S. in Computer ScienceComputer Science, National Taiwan University
  • : B.S. in Computer ScienceComputer Science, Taiwan Tech

Selected Honors & Services

Research and Academic Honors

  • : NTU Mr. Wen Tzu-Hsiang Memorial Scholarship, one of only 9 recipients in NTU
  • : Best Student Paper nominee, The IEEE Automatic Speech Recognition and Understanding Workshop
  • : Best Paper Award, The 37th Conference on Computational Linguistics and Speech Processing
  • : Student Travel Grants, Google APAC 2024 & ACLCLP in Taiwan 2025
  • : CTCI Foundation Bursary Award & Research Scholarship for Overseas Students
  • : Ranked 3rd/42 submissions worldwide on the LA track of ASVspoof 2021 challenge
  • : Kwong Tung Community Outstanding Student Scholarship, awarded six years.
  • : Certificate of Achievement, Taiwan Tech (Top 5% of students; three semesters)
  • : 3rd Prize of SZIIT Academic Award, awarded by SZIIT (Top 20% of students)
  • : National Encouragement Scholarship, awarded by the Ministry of Education

International Event Organizer & Reviewer