Shoichi Koyama, Ph.D.

Associate Professor

National Institute of Informatics / SOKENDAI

Welcome to Audio Processing Research Group at National Institute of Informatics, Tokyo, Japan! This group led by Prof. Shoichi Koyama was created in 2023.

Our principal research interests are signal processing and machine learning in audio and acoustics. In particular, we develop methodologies for analysis and control of acoustic fields with their applications to virtual/augmented reality audio, noise control, acoustic imaging, and others.

Join our group if interested in our research!


Acoustic signal processing, machine learning for audio, microphone and loudspeaker array processing, spatial audio


May 30, 2023 Our paper “Multichannel Active Noise Control with Exterior Radiation Suppression Based on Riemannian Optimization “ has been accepted to EUSIPCO 2023!
May 29, 2023 Project Researcher (PostDoc) position opening 🔎
May 25, 2023 Three presentations from our team at IEEE ICASSP 2023 🇬🇷
May 6, 2023 Our website was launched 🚀