Tetsuo Kogawa (粉川哲夫) is a Japanese performance artist, activist and media theorist who works extensively with radio art and microbroadcasting. Until 2012, he worked as a professor in Department of Communication Studies at Tokyo Keizai University, and has written extensively on media philosophy, information technology and film in both Japanese and English.
Source: “Tetsuo Kogawa”, English Wikipedia (CC BY-SA 4.0), excerpt