Nitto-denko Corporation

The School Corporation Kansai University

Yoshinobu Kajikawa

Saori Yamamoto

Yusuke Komoto

Kohei Oto

Ryohei Oban

Shun Hirose

A speaker () includes a radiation surface (). The radiation surface () has a first region (), a second region (), and a third region () between the first region () and the second region (). When an axis passing through the third region () and extending away from the radiation surface () is defined as a reference axis (X), the speaker () forms a first wavefront () propagating from the first region so as to approach the reference axis (X) and a second wavefront () propagating from the second region () so as to approach the reference axis (X).

Growing community of inventors

Osaka, Japan

Yoshinobu Kajikawa