Hiroya Saito, Kunio Oishi, Juro Ohga, Hirokazu Negishi, Ikuo Oohira, Kazuaki Maeda. New direct-radiator loudspeaker driven by piezoelectric ultrasonic motors. In IEEE 2nd Global Conference on Consumer Electronics, GCCE 2013, Tokyo, Japan, 1-4 October 2013. pages 200-203, IEEE, 2013. [doi]
Abstract is missing.