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Call signal volume- and/or hands-free function-controlled mobile radio device

  • US 20040253994A1
  • Filed: 08/06/2004
  • Published: 12/16/2004
  • Est. Priority Date: 08/27/2001
  • Status: Abandoned Application
First Claim
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1. Mobile radio device (MF) with a microphone (MK) and a loudspeaker (LP), the loudspeaker (LP) being used for sound reproduction for the hands-free function and/or for call signaling, characterized by means for acoustically measuring the distance between the loudspeaker (LP) and an obstacle.

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