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Ear input sound pressure level monitoring system

  • US 8,992,437 B2
  • Filed: 10/10/2012
  • Issued: 03/31/2015
  • Est. Priority Date: 06/01/2006
  • Status: Active Grant
First Claim
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1. A system configured to monitor a sound pressure level dose at an ear comprising:

  • an audio transducer configured to receive sound at the ear and configured to output a sound signal;

    a sound level threshold detector configured to receive the sound signal and determine whether a sound pressure level of the sound signal is at a minimum threshold level and outputting a sound pressure level signal corresponding to a sound pressure level of the sound signal when the sound pressure level is not at the minimum threshold level;

    a clock calculating a time period during which the sound pressure level is not at the minimum threshold level; and

    a listening fatigue calculator configured to receive the sound pressure level and the time period, where the listening fatigue calculator determines whether a cumulative effect of exposure to the sound at the ear over a monitored time period will cause harm to the ear which includes accounting for restorative periods.

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