A new noise reduction system based on ALE and noise reconstruction filter. - Naoto Sasaoka; Keisuke Sumi; Yoshio Itoh; Kensaku Fujii (ISCAS (1), 2005)

A Noise Reduction System for Wideband and Sinusoidal Noise Based on Adaptive Line Enhancer and Inverse Filter. - Naoto Sasaoka; Keisuke Sumi; Yoshio Itoh; Kensaku Fujii; Arata Kawamura (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2006)

Proposal of communication robot with simple motions. - Keisuke Sumi; Eri Sato-Shimokawara; Toru Yamaguchi (ICIT, 2017)