Patent ID: 8992437
Filing Date: 2015-03-31
Classification: A61B,G01H,H04R

Abstract:
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.