学生のWANG, Ruiさん（博士前期課程2年、ヒューマンライフデザイン領域、鵜木研究室）がRISP International Workshop on Nonlinear Circuits, Communications and Signal Processing 2021（NCSP'21）においてStudent Paper Awardを受賞しました。

　NCSP'21は、非線形回路、コミュニケーション、信号処理に関する国際ワークショップです。今回は3月1日から2日にかけてオンラインで開催されました。
　このワークショップは世界中の研究者が参加できます。特に、組織委員会は技術雑誌に掲載する準備ができていない予備的な結果を発表することを学生に推奨しています。

■受賞年月日
　令和3年3月2日

■研究題目、論文タイトル等
Method of Estimation 3D DOA Based on Monaural Modulation Spectrum

■研究者、著者
Rui Wang, Nguyen Khanh Bui, Daisuke Morikawa, and Masashi Unoki

■受賞対象となった研究の内容
Human has an amazing capability to monaurally locate sound source by using various acoustical cues. However, it has not yet cleared how human can perceive the direction of arrival (DOA) of a sound source in 3D space using monaural acoustic cues. Our previous study proposed a 3D monaural DOA estimation method based on monaural modulation spectrum (MMS) but has a large mean root-mean-square-error (RMSE) in estimation. In this paper, to improve our previously proposed method, we redesign the polynomial regression models for MMS features. We carried out 51,840 simulations with several signal types and multiple subjects to simultaneously estimate the azimuth and the elevation of an incoming sound source. Evaluation results indicate that the improved method could adequately estimate the DOA in 3D space with an overall RMSE of 5.59 degrees. Compared with the overall mean RMSE of 22.02 obtained by our previous method, the RMSE of estimation decreased by 74.6%

■受賞にあたって一言
It is a great honor for me to receive the student paper award at RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing 2021 (NCSP2021). NCSP is an excellent international academic conference, bringing together outstanding researchers from all over the world in the field of signal processing. To be able to attend such a meeting is a valuable opportunity for me to show my research. We made a research of single ear sound source localization, which can help us to further understand the human auditory mechanism, and can bring many practical applications, such as hearing aids for patients with single ear deafness.
As an excellent university, JAIST has beautiful environment and strong scientific research strength. Looking back on the precious time of two and a half years, there are many good memories. Here, I would like to thank Unoki Sensei for his patient guidance and help, which enabled me to obtain valuable knowledge and wonderful scientific research experience. At the same time, I would like to thank Akagi Sensei for his generous help. I would like to express my gratitude to my colleagues in the laboratory for their help. Finally, I would like to thank my family for their support and concern.

（右）WANGさん

令和3年3月23日