Sawako Usuki
Panasonic
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Publication
Featured researches published by Sawako Usuki.
Journal of the Acoustical Society of America | 2004
Kimihiro Andou; Mitsutaka Enomoto; Masaki Suzumura; Katsuhiko Minaga; Shuji Saiki; Sawako Usuki
The present invention relates to an electromagnetic electro-acoustic transducer to be used for generating an incoming indicator tone for mobile phones and the like. A resin magnet 11 is formed with a hard magnetic material and a soft magnetic material, the lowest resonant frequency can be easily set by changing the magnetic flux density in a magnetic gap by changing the compound ratio of the soft magnetic material, a high magnetic flux density is attained by increasing the magnetic permeability of the resin magnet 11 with the soft magnetic material, thus achieving a smaller size as well as a higher sound pressure through an increase in the driving force exerted to the diaphragm.
Journal of the Acoustical Society of America | 2009
Shuji Saiki; Sawako Usuki; Shuhei Konishi
Archive | 2002
Shuji Saiki; Sawako Usuki
Journal of the Acoustical Society of America | 1997
Shuji Saiki; Sawako Usuki; Mitsukazu Kuze
Archive | 2004
Shuji Saiki; Sawako Usuki
Archive | 1988
Mitsuhiko Serikawa; Sawako Usuki; Katsuaki Sato
Journal of the Acoustical Society of America | 2007
Sawako Usuki; Shuji Saiki
Archive | 1987
Hiroyuki Takewa; Mitsuhiko Serikawa; Seiichi Ishikawa; Sawako Usuki; Yoichi Kimura; Shuichi Obata
Archive | 1998
Shuji Saiki; Kazue Sato; Sawako Usuki; Mitsukazu Kuze
Archive | 2001
Sawako Usuki; Shuji Saiki
