Ikuo Oohira

Loudspeaker Systems by Linear Motion Type Piezoelectric Ultrasonic Actuators

Kazuaki Maeda, Kunio Oishi, Hirokazu Negishi, 2015 .

A Proposal for Low Frequency Loudspeaker Design Utilizing Ultrasonic Motor

Juro Ohga, Hirokazu Negishi, Ikuo Oohira, 2005 .

Loudspeaker for Low Frequency Signal Driven by Four Piezoelectric Ultrasonic Motors

Hajime Kubota, Kazuaki Maeda, Hirokazu Negishi, 2012 .

Diaphragm Parameters and Radiation Characteristics of Multilayer Piezoelectric Ceramic Loudspeakers

Jun Fujii, Juro Ohga, Ikuo Oohira, 2005 .

New direct-radiator loudspeaker driven by piezoelectric ultrasonic motors

Juro Ohga, Kazuaki Maeda, Kunio Oishi, 2013, 2013 IEEE 2nd Global Conference on Consumer Electronics (GCCE).