Tadashi Tamura
Panasonic
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Publication
Featured researches published by Tadashi Tamura.
Journal of the Acoustical Society of America | 1992
Tsuneo Tanaka; Kazue Sato; Hiroyuki Takewa; Akira Kurozuka; Tadashi Tamura; Katsuji Hattori; Satoshi Takayama; Kosaku Murata; Katsuaki Satoh; Mituhiko Serikawa; Youichi Kimura; Shuichi Obata
A speaker system has an acoustic diaphragm and an image projection screen provided on a surface of the diaphragm integrally therewith so as to enable the user to enjoy both realistic image on the screen and powerful sound reproduced through the diaphragm. The rear surface of the diaphragm is closed at a peripheral portion thereof while the central portion of the rear surface of the diaphragm is opened to the exterior, so that the speaker system can provide a high level of reproduced sound pressure in low-pitched region, while the thickness of the speaker is reduced remarkably. The diaphgram can be driven by a plurality of driving units so that the speaker system can operate only with an ordinary stereophonic amplifier. The diaphragm can be composed of a pair of diaphragm elements capable of vibrating independently of each other and the screen may be integrally and commonly attached to the surfaces of these diaphragm elements in such a manner as to allow the diaphragm elements to vibrate independently of each other, whereby the speaker system can operate in stereophonic mode. Any variation in the acoustic characteristic attributable to variation in the condition of installation is compensated for by a change in the ratio of the opened area of the rear surface of the diaphragm to the whole effective vibration area or by a selective provision of a sound absorbing member on the rear side of the cabinet.
Journal of the Acoustical Society of America | 2004
Tadashi Tamura
A method and apparatus of blood flow imaging is disclosed. The method comprises receiving a beamformed signal indicative of an ultrasound signal reflected from a target within a body, based upon the beamformed signal, imaging tissue within the body, generating thereby a tissue signal, based upon the beamformed signal, detecting blood flow within the body, generating thereby a blood flow signal and combining the tissue signal and the blood flow signal generating thereby a composite image of tissue and blood flow.
Archive | 1988
Toshio Nakamura; Tadashi Tamura; Naomi Kimura; Susumu Urata
Archive | 1995
Michiko Ogawa; Akihisa Kawamura; Masaharu Matsumoto; Toshihiko Date; Tadashi Tamura; Yasutoshi Nakama
Archive | 2001
Takehito Hattori; Daisuke Inoue; Hiroki Kondo; Katsumi Kono; Kenji Matsuo; Tadashi Tamura; Koji Taniguchi; Yoshiaki Yamamoto; Hideki Yasue; 大輔 井上; 秀樹 安江; 良明 山本; 勇仁 服部; 賢治 松尾; 克己 河野; 忠司 田村; 浩司 谷口; 宏紀 近藤
Archive | 2001
Daisuke Inoue; Hiroki Kondo; Katsumi Kono; Kenji Matsuo; Tadashi Tamura; Koji Taniguchi; Yoshiaki Yamamoto; Hideki Yasue; 大輔 井上; 秀樹 安江; 良明 山本; 賢治 松尾; 克己 河野; 忠司 田村; 浩司 谷口; 宏紀 近藤
Archive | 2001
Ryoji Hanebuchi; Daisuke Inoue; Hiroki Kondo; Katsumi Kono; Kenji Matsuo; Koji Morioka; Tadashi Tamura; Koji Taniguchi; Yoshiaki Yamamoto; Hideki Yasue; 大輔 井上; 秀樹 安江; 良明 山本; 賢治 松尾; 浩司 森岡; 克己 河野; 忠司 田村; 良司 羽渕; 浩司 谷口; 宏紀 近藤
Archive | 1994
Tadashi Tamura; Kenichi Terai; Hiroyuki Hashimoto; Yasutoshi Nakama
Archive | 1994
Takashi Katayama; Akihisa Kawamura; Masaharu Matsumoto; Masako Ogawa; Tadashi Tamura; 理子 小川; 明久 川村; 正治 松本; 崇 片山; 忠司 田村
Archive | 1993
Hiroyuki Hashimoto; Masao Koba; Yasutoshi Nakama; Tadashi Tamura; Kenichi Terai; 保利 中間; 賢一 寺井; 政生 木場; 裕之 橋本; 忠司 田村