6,907,121 Impedance matched horn having impedance matched to impedance of an ear
  Issued: June 14, 2005
  Filed: June 16, 2000
  U.S. Class: 379/433.02
Abstract:  An acoustic horn has an acoustic impedance matched with impedances of an ear and a driver. The acoustic horn can be used in an electroacoustic transducer including the driver, and the acoustic horn. The electroacoustic transducer is particularly well-suited for use in portable device such as a radiotelephone, pager, or other device.

Posted by GEN-ERIC at 11:47:40 am into the following categories: Patents of the Day

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