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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| EA | 2014-06-27 13:00 |
Mie | Mie Univ. | Loudspeaker systems for low frequency radiation by rotational type piezoelectric ultrasonic actuators Daichi Nagaoka (Tokyo Univ. of Tech.), Juro Ohga (Shibaura Inst. of Tech./MIX Corp.), Hirokazu Negishi (MIX Corp.), Ikuo Oohira, Kazuaki Maeda (TOA), Kunio Oishi (Tokyo Univ. of Tech.)  EA2014-5 |
Conventional electrodynamic loudspeakers actuated by a permanent magnet and a coil seem almighty．However，they include fu... [more] | EA2014-5 pp.1-6 |
| EA | 2010-10-22 13:25 |
Ishikawa | Kanazawa-city Omi-cho Koryu Plaza | Improvement of driving contractions for loudspeakers by ultrasonic motors Juro Ohga (Shibaura IT/MIX Lab.), Hirokazu Negishi (MIX Lab.), Ryousuke Suzuki, Gen Takeda, Hiroki Saito, Tatsuya Egawa (Chiba IT), Ikuo Oohira (I.B.), Kazuaki Maeda (TOA), Hajime Kubota (Chiba IT) EA2010-77 |
The project team of authors are studying direct-radiator-loudspeakers by using two sorts of piezoelectric ultrasonic mot... [more] | EA2010-77 pp.115-120 |
| EA | 2008-03-07 11:10 |
Tokyo | NTT Musashino R&D Center | Analysis of effect of physical parameters on human ear response of intraconcha and insert headphones Megumi Kobayashi, Yusuke Yanagida, Juro Ohga (Shibaura IT), Ikuo Oohira (Ashida Sound Co.) EA2007-116 |
Although a variety of headphones is increased, fundamentals of design method for them are still not established, and als... [more] | EA2007-116 pp.25-30 |
| EA | 2008-03-07 13:40 |
Tokyo | NTT Musashino R&D Center | Proposal of new measuring method for headphones and earphones Kiyofumi Inanaga, Takeshi Hara (SONY Corp.), Gunnar Rasmussen (GRAS), Yasuhiro Riko (Riko Associates), Juro Ohga (SIT), Ikuo Oohira (Ashida Sound) EA2007-118 |
Currently various types of acoustic coupler has been specified and employed in measuring headphones and earphones. Beca... [more] | EA2007-118 pp.37-42 |
| EA | 2006-10-26 11:00 |
Niigata | Nagaoka Univ. Tech. | A study on cylindrical wave field synthesis with ultrasmall loudspeaker array Takayuki Ohno, Haruhide Hokari, Shoji Shimada (Nagaoka Univ. of Tech.), Ikuo Oohira (Ashida Sound Co., Ltd.) |
Wave field synthesis (WFS) is attracting interest in Europe. WFS is a technology that allows a loudspeaker array at the... [more] |
EA2006-56 pp.7-12 |
| EA | 2006-03-13 10:00 |
Tokyo | Analysis of physical characteristics of supra-aural headphones by examination of acoustical parameters Chika Takahashi, Megumi Kobayashi, Juro Ohga (S.I.T.), Ikuo Oohira (Ashida Sound Co.,Ltd.) |
This paper describes analysis of headphones to clarify most important parameters for design. As the physical relationshi... [more] | EA2005-106 pp.11-16 |
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| EA, US (Joint) |
2006-01-26 13:00 |
Kyoto | Diaphragm parameters and radiation characteristics of small size piezoelectric ceramic loudspeakers Jun Fujii, Syun-ichirou Abe, Juro Ohga (SIT), Ikuo Oohira (Ashida Sound Co.,), Norikazu Sashida (Taiyo Yuden Co.,) |
This paper presents diaphragm parameters and analysis of radiation characteristics for small size loudspeaker by a multi... [more] | EA2005-88 pp.1-6 |
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| EA, SIP | 2005-05-20 11:30 |
Hyogo | Effect of acoustic load parameters for frequency response of headphones Chika Takahashi, Juro Ohga (S. I. Tech), Ikuo Oohira (Ashida Sound) |
This paper describes three sorts of measurements made on headphones to clarify most important parameters for design. Rec... [more] | EA2005-16 SIP2005-21 pp.19-24 |
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