Vehicle accessory microphone

  • US 7,443,988 B2
  • Filed: 10/09/2006
  • Issued: 10/28/2008
  • Est. Priority Date: 11/19/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. A vehicle accessory, comprising:

  • a housing;

    a mirror element;

    at least one first transducer positioned in the housing;

    at least one second transducer positioned in the housing, wherein the first and second transducers are positioned in spaced relation inside the housing;

    a circuit coupled to the first and second transducers for combining the output signal of the first and second transducers to produce a combined audio signal;

    a high pass filter for filtering the combined audio signal to produce an enhanced audio signal with a reduced noise component; and

    wherein a signal entering the second transducer is electronically delayed using a time delay circuit by an amount equal to the time period required for sound to travel a predetermined distance between the first transducer and the second transducer.

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