オオイシ　クニオ   大石　邦夫    所属   コンピュータサイエンス学部 コンピュータサイエンス学科    職種   教授
言語種別	英語
発行・発表の年月	2015/05
形態種別	国際会議論文
査読	査読あり
標題	Loudspeaker systems by linear motion type piezoelectric ultrasonic actuators
執筆形態	共著
掲載誌名	Audio Engineering Society 138th Convention
巻・号・頁	9283,pp.1-6
著者・共著者	Daichi Nagaoka, Juro Ohga, Hirokazu Negishi, Ikuo Oohira, Kazuaki Maeda, and Kunio Oishi
概要	The research group of authors has been developing completely new loudspeaker constructions which are driven by piezoelectric ultrasonic motors. This paper proposes two sorts of applications of piezoelectric linear actuators to both direct radiator and horn loudspeakers. A direct-radiator loudspeaker with a cone radiator driver by piezoelectric actuators shows smooth frequency characteristics in low frequency region because its radiating motion includes no significant resonance in the working frequency region. Therefore, it is useful for radiation of the lowest frequency part of audio signal. A horn loudspeaker by the same actuators works in rather moderate frequency region which is higher than the cut-off frequency of horns of ordinary size.
論文（査読付）ファイル	DOWNLOAD