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Apparatus and method for initiating a transaction having acoustic data receiver that filters human voice

  • US 6,125,172 A
  • Filed: 04/18/1997
  • Issued: 09/26/2000
  • Est. Priority Date: 04/18/1997
  • Status: Expired due to Term
First Claim
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1. An acoustic data receiver comprising a microphone for receiving an audio signal having encoded data that is non-discernable by a listener and is transmitted as part of the audio signal,a filter, associated with the microphone, for removing a substantial portion of a human voice signal that may have been received within the microphone, anda signal receiver for receiving the filtered signal and performing work on the signal for further processing or data communication.

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