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Communication device using bone conduction

  • US 6,885,753 B2
  • Filed: 07/09/2002
  • Issued: 04/26/2005
  • Est. Priority Date: 01/27/2000
  • Status: Expired due to Term
First Claim
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1. A communication device comprising:

  • a microphone, a conduction interface, an electromechanical force transducer mounted to the conduction interface to drive the interface to conduct sound to a user by bone conduction, wherein the transducer has an intended operative frequency range and comprises a resonant element having a frequency distribution of modes in the operative frequency range, and a coupler for mounting transducer to the interface, wherein the parameters of the resonant element are selected to enhance the distribution of modes in the resonant element in the operative frequency range, and wherein the distribution of modes in the resonant element has a density of modes which is sufficient for the resonant element to provide an effective mean average force which is substantially constant with frequency.

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