The acoustical design of slim size piezoelectric speakers for mobile phones

Jun Kuroda, Yasuharu Onishi, Yukio Murara, Motoyoshi Komoda, Kazuyuki Tsunoda, Masatake Takahashi, Yasuhiro Oikawa, Yoshio Yamasaki

研究成果: Conference contribution

抄録

Recently, market demand for slim mobile phones has been increasing. Speakers are an important device in mobile phones because they create an interface with the phone user. However, due to the thickness of conventional electrodynamic speakers, designers have been restricted in how they design the mobile phone case. Piezoelectric speakers could solve this problem, because they are no more than 1.0 mm thick. We therefore developed an ultra-thin piezoelectric speaker with a thickness of less than 0.9 mm. Piezoelectric speakers, however, differ from electrodynamic speakers in certain ways, requiring the formulation of guidelines for optimum design. In this study, we examined the relationship between design factors such as the acoustic structure, damping of phone case vibration, and electrical pass design and the acoustic characteristics in order to achieve high-quality sound in a slim mobile phone that uses our piezoelectric speaker. Copyright

本文言語English
ホスト出版物のタイトル20th International Congress on Acoustics 2010, ICA 2010 - Incorporating Proceedings of the 2010 Annual Conference of the Australian Acoustical Society
ページ1170-1177
ページ数8
出版ステータスPublished - 2010 12 1
イベント20th International Congress on Acoustics 2010, ICA 2010 - Incorporating the 2010 Annual Conference of the Australian Acoustical Society - Sydney, NSW, Australia
継続期間: 2010 8 232010 8 27

出版物シリーズ

名前20th International Congress on Acoustics 2010, ICA 2010 - Incorporating Proceedings of the 2010 Annual Conference of the Australian Acoustical Society
2

Other

Other20th International Congress on Acoustics 2010, ICA 2010 - Incorporating the 2010 Annual Conference of the Australian Acoustical Society
国/地域Australia
CitySydney, NSW
Period10/8/2310/8/27

ASJC Scopus subject areas

  • 音響学および超音波学

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