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Dynamic protection of personal information in audio recordings

  • US 10,468,026 B1
  • Filed: 08/17/2018
  • Issued: 11/05/2019
  • Est. Priority Date: 08/17/2018
  • Status: Active Grant
First Claim
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1. A method to protect personal identifiable information (PII) or sensitive personal information (SPI) in audio recordings, comprising:

  • obtaining a first audio file associated with a first channel of a voice call;

    obtaining a second audio file associated with a second channel of the voice call;

    partitioning, by one or more processors, the first audio file into one or more segments comprising spoken digits, each segment comprising a start time and an end time, by;

    detecting a spoken digit in the first audio file at a timepoint;

    determining whether a subsequent spoken digit occurred within a certain amount of time of a previous spoken digit; and

    setting the end time of the segment when the certain amount of time between subsequent digits is exceeded with no digits being detected;

    identifying in which of the one or more segments of the first audio file the number of spoken digits exceeds a certain number;

    partitioning, by the one or more processors, the second audio file into segments corresponding in time to the identified segments of the first audio file;

    determining whether to tag the voice call as containing PII or SPI in response to determining whether one or more trigger words are spoken in at least one of the corresponding segments of the second audio file;

    partitioning, by one or more processors, the second audio file into one or more segments comprising spoken digits, each segment comprising a start time and an end time, by;

    detecting a spoken digit in the second audio file at a timepoint;

    determining whether a subsequent spoken digit occurred within a certain amount of time of a previous spoken digit; and

    setting the end time of the segment when the certain amount of time between subsequent digits is exceeded with no digits being detected;

    identifying one or more segments of the second audio file in which the number of spoken digits exceeds a certain number;

    partitioning the first audio file into one or more segments corresponding in time to the one or more identified segments in the second audio file;

    determining whether to tag the voice call as containing PII or SPI in response to determining whether one or more trigger words are spoken in at least one of the one or more corresponding segments of the first audio file.

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