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Using voice signal analysis to identify authorized users of a telephone system

  • US 5,623,539 A
  • Filed: 01/27/1994
  • Issued: 04/22/1997
  • Est. Priority Date: 01/27/1994
  • Status: Expired due to Term
First Claim
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1. An apparatus for determining whether at least one of a plurality of users of a telephone line is an authorized user of said telephone line, said apparatus comprising:

  • a memory for storing an authorized voice pattern for each of a plurality of authorized users of the telephone line;

    a voice segregator for receiving voice information obtained from the telephone line, said voice information corresponding to voice patterns of a plurality of users of the telephone line, said voice segregator segregating said received voice information into a plurality of segregated voice patterns, each said segregated voice pattern corresponding to one of said plurality of users of the telephone line; and

    a comparator for receiving said segregated voice patterns from said voice segregator and comparing each said segregated voice pattern to said authorized voice patterns stored in said memory to determine whether one of said plurality of users of the telephone line is an authorized user.

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