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D. Nagaoka, J. Ohga, H. Negishi, I. Oohira, K. Maeda, and K. Oishi, "Loudspeaker Systems by Linear Motion Type Piezoelectric Ultrasonic Actuators," Paper 9283, (2015 May.). doi: D. Nagaoka, J. Ohga, H. Negishi, I. Oohira, K. Maeda, and K. Oishi, "Loudspeaker Systems by Linear Motion Type Piezoelectric Ultrasonic Actuators," Paper 9283, (2015 May.). doi:
Abstract: The research group of authors have been developing completely new loudspeaker constructions that 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 that is higher than the cut-off frequency of hones of ordinary size.

@article{nagaoka2015loudspeaker,
author={nagaoka, daichi and ohga, juro and negishi, hirokazu and oohira, ikuo and maeda, kazuaki and oishi, kunio},
journal={journal of the audio engineering society},
title={loudspeaker systems by linear motion type piezoelectric ultrasonic actuators},
year={2015},
volume={},
number={},
pages={},
doi={},
month={may},} @article{nagaoka2015loudspeaker,
author={nagaoka, daichi and ohga, juro and negishi, hirokazu and oohira, ikuo and maeda, kazuaki and oishi, kunio},
journal={journal of the audio engineering society},
title={loudspeaker systems by linear motion type piezoelectric ultrasonic actuators},
year={2015},
volume={},
number={},
pages={},
doi={},
month={may},
abstract={the research group of authors have been developing completely new loudspeaker constructions that 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 that is higher than the cut-off frequency of hones of ordinary size.},}

TY - paper
TI - Loudspeaker Systems by Linear Motion Type Piezoelectric Ultrasonic Actuators
SP - EP -
AU - Nagaoka, Daichi
AU - Ohga, Juro
AU - Negishi, Hirokazu
AU - Oohira, Ikuo
AU - Maeda, Kazuaki
AU - Oishi, Kunio
PY - 2015
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - May 2015 TY - paper
TI - Loudspeaker Systems by Linear Motion Type Piezoelectric Ultrasonic Actuators
SP - EP -
AU - Nagaoka, Daichi
AU - Ohga, Juro
AU - Negishi, Hirokazu
AU - Oohira, Ikuo
AU - Maeda, Kazuaki
AU - Oishi, Kunio
PY - 2015
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - May 2015
AB - The research group of authors have been developing completely new loudspeaker constructions that 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 that is higher than the cut-off frequency of hones of ordinary size.