I am an AI Scientist at Gaudio Lab, specializing in Music and Speech.
I hold an M.S. degree from POSTECH, where I was advised by Prof. Youngjoo Suh and focused on applying AI to acoustics and speech for various applications.
My core expertise lies in speech synthesis, emotional voice conversion, and automatic music mixing.
As a passionate hobbyist composer, I enjoy creating music inspired by J-POP bands and actively play keyboard and synthesizer — as well as vocals and bass.
My vision is to help build a world where anyone can express their inner universe through composition.
Started working at Gaudio Lab as a research scientist, focusing on Music & Speech AI
Jan 20, 2026
One paper, "AcouLetter: Enabling Fine-Grained Mid-Air Alphabetic Thumb Gesture Recognition on Smartphones with Acoustic and Inertial Sensing" has been accepted to IUI 2026
Aug 6, 2025
One paper, "Maestro-EVC: Controllable Emotional Voice Conversion Guided by References and Explicit Prosody" has been accepted to ASRU 2025
Jun 5, 2025
Selected as a recipient of the POSTECH Alchemist Fellowship
May 20, 2025
One paper, "QR-VC: Leveraging Quantization Residuals for Linear Disentanglement in Zero-Shot Voice Conversion" has been accepted to EUSIPCO 2025
🎧 Research Interests
My current research focuses on audio-related deep learning applications.
Recently, I have been particularly interested in automatic arrangement and information retrieval using acoustic data.
Automatic Music Mixing
Music Information Retrieval
Speech Synthesis
Emotional Voice Conversion
📚 Publications
Conferences & Workshops
AcouLetter: Enabling Fine-Grained Mid-Air Alphabetic Thumb Gesture Recognition on Smartphones with Acoustic and Inertial Sensing
Su Yeon Shim, Yunho Nam, Jinsung Yoon, Wooyeol Jeong, Youngjoo Suh Proceedings of the 31th International Conference on Intelligent User Interfaces (IUI), 2026
Maestro-EVC: Controllable Emotional Voice Conversion Guided by References and Explicit Prosody
🔗 Link
Jinsung Yoon*, Wooyeol Jeong*, Jio Gim, Youngjoo Suh (*: equal contribution) Proceedings of the IEEE Automatic Speech Recognition and Understanding Workshop (ASRU), 2025
QR-VC: Leveraging Quantization Residuals for Linear Disentanglement in Zero-Shot Voice Conversion
🔗 Link
Youngjun Sim*, Jinsung Yoon*, Wooyeol Jeong, Youngjoo Suh (*: equal contribution) Proceedings of the 33rd European Signal Processing Conference (EUSIPCO), 2025
Domestic
Automatic Music Mixing Using Music Source Separation Models and Wave-U-Net Jinsung Yoon, Youngjun Sim, Youngjoo Suh Proceedings of KIIT Conference, 2024
End-to-End One-Shot Voice Conversion Based on Vector Quantization
Youngjun Sim, Jinsung Yoon, Youngjoo Suh Proceedings of KICS Conference, 2024
🏫 Education
POSTECH, Pohang University of Science and Technology M.S. Student in Artificial Intelligence (Advisor: Youngjoo-Suh) Feb 2024 – Feb 2026 | Pohang, South Korea
Konkuk University B.S. in Biotechnology (Double Major in Computer Science) Feb 2019 – Aug 2023 | Seoul, South Korea
🔬 Research Experiences
Gaudio Lab AI Scientist (Music, Speech) Feb 2026 – Present | Seoul, South Korea
POSTECH, AIoT Lab Graduate Student Researcher (Advisor: Youngjoo Suh) Feb 2024 – Feb 2026 | Pohang, South Korea
Konkuk University, HIFI AI Lab Resarch Intern (Advisor: Sunghwan Kim) Jul 2022 – Feb 2023 | Seoul, South Korea
🖥️ Projects
Tech Frontier Program, UC Berkeley KIC Tech Frontier 25, University of California, Berkeley Jul 2025 – Aug 2025
EIAM: Emotion Intensity Analysis Module Square One Company Sep 2025 – Dec 2025
Design of a High-Intensity Emotional Speech Synthesis System incorporating Nonverbal Vocalizations Square One Company Feb 2025 – Aug 2025
AI-based Music Mixing and Mastering Using Text Prompts I-Corps Lab-based Startup Exploration Program Feb 2025 – Dec 2025
Oder Complaint Automation System Using STT and NER Government-funded project led by Pohang Techonopark Aug 2024 – Feb 2025
👨🏫 Teaching Experience
Research Participation (CSED399) Emotional Voice Conversion Research Mentorship Feb 2025 – Jun 2025
Programming and Problem Solving (CSED101) Teaching Assistant for the lab Aug 2025 – Dec 2025
🎹 Creating Music
As a hobbyist composer, I enjoy creating piano-based band music using Sonar DAW, often drawing inspiration from my favorite J-POP band, Yorushika.
I'm most comfortable with:
