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Warning device programmable to be sensitive to preselected sound frequencies

  • US 5,651,070 A
  • Filed: 04/12/1995
  • Issued: 07/22/1997
  • Est. Priority Date: 04/12/1995
  • Status: Expired due to Fees
First Claim
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1. A combination listening and alerting device for providing an alerting signal to warn an individual unable to hear a selected warning sound of the occurrence of said selected warning sound, said device comparing a recorded warning signal corresponding to said selected warning sound to continuously received ambient sounds and providing an alerting signal when a match is determined between said recorded warning signal and said ambient sounds, said device comprising:

  • (a) means for receiving sounds;

    (b) means for converting said selected warning sound received by said sounds receiving means into corresponding digital information;

    (c) means for processing said corresponding digital information and storing said processed corresponding digital information;

    (d) comparison means for continuously comparing ambient digital information converted by said converting means from ambient sound received by said sounds receiving means to said corresponding digital information received from said processing and storing means, said comparison means providing an identification signal when said ambient digital information matches said corresponding digital information, said device further having a recording mode and a listening mode and further including a switch means for placing said processing and storing means in communication with said sounds receiving means in said recording mode and placing said comparison means in communication with said sounds receiving means and said processing and storing means in said listening mode; and

    (e) an alerting component in response to the occurrence of said identification signal for providing said alerting signal thereby warning said individual of the occurrence of said selected warning sound.

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