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US Patent Application 20060165249 - Electroacoustic transducer

Application 20060165249 Filed on July 4, 2003. Published on July 27, 2006

Inventor

Assignee

US Classes

381/374, Particular support structure381/370, Headphone381/396Electromagnetic (e.g., dyynamic)

Attorney, Agent or Firm

Foreign Documents

  • 2002-195714 JP 07/04/2002

International Class

H04R 25/00

Issued Patent Number:

7324655


Abstract text


A small earphone or headphone which can produce a wide band acoustic output from a low-pitched tone to a high-pitched tone and can generate a body-sensitive vibration independent output or a body-sensitive vibration output synchronized with a music. The earphone or headphone is mounting a vibration actuator which is provided with a magnetic circuit including a permanent magnet, a yoke, and a plate for concentrating the flux of the permanent magnet, with a coil disposed in an air gap of the magnetic circuit, with a diaphragm fixed with the coil and being imparted with a driving force therefrom, and with a vibration transmitting section for supporting the magnetic circuit flexibly through a suspension comprising a flexible spring.

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