I am currently a Senior Researcher at Tencent Singapore under the ‘Project Up’ (青云计划) Talent Programme, specializing in Speech Synthesis (Speech GenAI). Previously, I obtained my Ph.D. from the National University of Singapore (NUS), where I was supervised by Prof. Li Haizhou and Prof.Mike Z. SHOU. Before joining Tencent, I worked as a Senior Research Engineer at the Agency for Science, Technology and Research (A*STAR), Singapore, focusing on Speech-LLM (MERaLiON Team), Speech Anti-Spoofing (Speech DeepFake Detection), and Speaker Recognition.

My research interests include text-to-speech, speaker recognition, anti-spoofing, speech-LLM, etc. I have published more than 10 papers in the top international AI conferences and journals such as NeurIPS, TASLP, SPL, ICASSP, INTERSPEECH.

🔍 Research Area

Speech Processing: Text-to-Speech (TTS), Speaker Recognition, Speech Foundation Model, Anti-spoofing / DeepFake Detection, Target Speaker Extraction

Multi-modal Processing: Speech-LLM, Audio-visual

Algorithm: Self-supervised Learning, Disentanglement Learning

🎓 Education

2021.01 - 2025.01, Ph.D. in Speech Processing, National University of Singapore (NUS), Singapore.
2018.07 - 2019.06, M.Sc. in Electronic and Computer Engineering (Specialization in Computer Engineering), National University of Singapore (NUS), Singapore.

💼 Work Experience

2025.02 - Now, Senior Researcher, ‘Project Up’ (青云计划) Talent Programme, Tencent, Singapore.
2020.09 - 2025.02, Senior Research Engineer, Agency for Science, Technology and Research (A*STAR), Singapore.
2019.06 - 2020.08, AI Scientist, PENSEES R&D Center, Singapore

📜 Publication

2025

⭐ Liumeng Xue, Ziya Zhou, …, Tianchi Liu, …, Audio-FLAN: A Preliminary Release, 2025. 🔗[arXiv, Dataset(🤗Hugging Face), Github]
Yi Ma, Shuai Wang, Tianchi Liu, Haizhou Li, ExPO: Explainable Phonetic Trait-Oriented Network for Speaker Verification, IEEE Signal Processing Letters (IEEE SPL), 2025. 🔗[IEEE, arXiv, code]
Ke Zhang, Marvin Borsdorf, Tianchi Liu, Shuai Wang, Yangjie Wei, Haizhou Li, Speaker Extraction with Verification of Present and Absent Target Speakers, Journal of Shanghai Jiaotong University (Science), 2025. 🔗[Link]

2024

⭐ [🌊MERaLiON🦁] Muhammad Huzaifah*, Geyu Lin*, Tianchi Liu*, Hardik B. Sailor*, Kye Min Tan*, Tarun K. Vangani*, Qiongqiong Wang*, Jeremy H. M. Wong*, Nancy F. Chen, Ai Ti Aw (MERaLiON Team), MERaLiON-SpeechEncoder: Towards a Speech Foundation Model for Singapore and Beyond, 2024. 🔗[arXiv, 🤗Hugging Face]
⭐Tianchi Liu, Kong Aik Lee, Qiongqiong Wang, Haizhou Li, Golden Gemini is All You Need: Finding the Sweet Spots for Speaker Verification, IEEE/ACM Transactions on Audio, Speech, and Language Processing (IEEE TASLP), 2024. 🔗[IEEE, arXiv, pre-trained models & simple inference, train & test code, ONNX]
Tianchi Liu, Lin Zhang, Rohan Kumar Das, Yi Ma, Ruijie Tao, Haizhou Li, How Do Neural Spoofing Countermeasures Detect Partially Spoofed Audio?, INTERSPEECH, oral, 2024. 🔗[ISCA, arXiv]
Zihan Pan, Tianchi Liu, Hardik B. Sailor, Qiongqiong Wang, Attentive Merging of Hidden Embeddings from Pre-trained Speech Model for Anti-spoofing Detection, INTERSPEECH, oral, 2024. 🔗[ISCA, arXiv, code]
Tianchi Liu, Ivan Kukanov, Zihan Pan, Qiongqiong Wang, Hardik Sailor, Kong Aik Lee, Towards Quantifying and Reducing Language Mismatch Effects in Cross-lingual Speech Anti-Spoofing, IEEE Spoken Language Technology Workshop (IEEE SLT), 2024.🔗[IEEE, arXiv]
Anmol Guragain*, Tianchi Liu*, Zihan Pan, Hardik Sailor, Qiongqiong Wang, Speech Foundation Model Ensembles for the Controlled Singing Voice Deepfake Detection (CtrSVDD) Challenge 2024, IEEE Spoken Language Technology Workshop (IEEE SLT), (co-first author*), 2024. 🔗[IEEE, arXiv, code]
Ruijie Tao, Zhan Shi, Yidi Jiang, Tianchi Liu, Haizhou Li, Voice Conversion Augmentation for Speaker Recognition on Defective Datasets, 2024. 🔗[arXiv]

2023

⭐Tianchi Liu, Kong Aik Lee, Qiongqiong Wang, Haizhou Li, Disentangling Voice and Content with Self-Supervision for Speaker Recognition, Advances in Neural Information Processing Systems (NeurIPS), 2023. 🔗[NeurIPS, arXiv]
Qiongqiong Wang, Kong Aik Lee, Tianchi Liu, Incorporating Uncertainty from Speaker Embedding Estimation to Speaker Verification, IEEE International Conference on Acoustics, Speech and Signal Processing (IEEE ICASSP), oral, 2023. 🔗[IEEE, arXiv]

2022

⭐Tianchi Liu, Rohan Kumar Das, Kong Aik Lee, Haizhou Li, MFA: TDNN with multi-scale frequency-channel attention for text-independent speaker verification with short utterances, IEEE International Conference on Acoustics, Speech and Signal Processing (IEEE ICASSP), oral, 2022. 🔗[IEEE, arXiv, code]
Tianchi Liu, Rohan Kumar Das, Kong Aik Lee, Haizhou Li, Neural acoustic-phonetic approach for speaker verification with phonetic attention mask, IEEE Signal Processing Letters (IEEE SPL), 2022. 🔗[IEEE]
Qiongqiong Wang, Kong Aik Lee, Tianchi Liu, Scoring of Large-Margin Embeddings for Speaker Verification: Cosine or PLDA?, INTERSPEECH, oral, 2022. 🔗[ISCA, arXiv]

2019 - 2020

Tianchi Liu, Rohan Kumar Das, Maulik Madhavi, Shengmei Shen, Haizhou Li, Speaker-Utterance Dual Attention for Speaker and Utterance Verification, INTERSPEECH, 2020. 🔗[ISCA, arXiv]
Tianchi Liu, Maulik C Madhavi, Rohan Kumar Das, Haizhou Li, A Unified Framework for Speaker and Utterance Verification, INTERSPEECH, 2019. 🔗[ISCA, code]

💻 Open Source Contributions

WeSpeaker
AudioLLM
MERaLiON [🤗Hugging Face]

🌟 Others

🥇 Awards🥈🥉🏅🎖️

Best Student Paper Award -🥇Gold Award (1 recipient annually), Pattern Recognition and Machine Intelligence Association (PREMIA), 2024
Best Student Paper Award - Long Paper Track (1 recipient annually), Nanyang Speech Technology Forum (NSTF), 2024
The 🥉3rd place winner out of 49 teams in the Controlled Singing Voice Deepfake Detection (CtrSVDD) Challenge 2024 @ IEEE SLT, 2024
Best Paper Award in 2023 International Doctoral Forum (CUHK & Microsoft), 2023
Travel Grant Award (Top Tier), Chinese and Oriental Languages Information Processing Society (COLIPS), 2023
The 🎖️5th place winner out of 128 teams in NIST Face Recognition Vendor Test (FRVT) - Face Mask Effects, 2020
Outstanding Achievement Award under the Research Domain, PENSEES Singapore, 2020

🏛️ Academic Service

Virtual Session Chair @ IEEE IALP, 2023
Program Committee @ IEEE ISCSLP, 2022
Volunteer @ IEEE ICASSP, 2022

📝 Reviewer

Journal/Transactions/Letters:

IEEE Transactions on Dependable and Secure Computing (TDSC) ‘25
Computer Speech & Language ‘24
IEEE Signal Processing Letters (SPL) - ‘23, ‘24

Conference: