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Mapping of digital data symbols onto one or more formant frequencies for transmission over a coded voice channel

  • US 6,208,959 B1
  • Filed: 12/15/1997
  • Issued: 03/27/2001
  • Est. Priority Date: 12/15/1997
  • Status: Expired due to Term
First Claim
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1. A method of transmitting a digital input data symbol to a receiver, the method comprising the steps of:

  • mapping one or more formant frequencies that correspond to the digital input data symbol;

    generating a signal having the one or more formant frequencies; and

    supplying the signal for transmission over a voice channel.

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