US 9,813,792 B2
Hearing damage limiting headphones
Frederick Charles Neumeyer, Austin, TX (US); Samir Ibrahim, Memphis, TN (US); and John Michael Page Knox, Austin, TX (US)
Assigned to III HOLDINGS 4, LLC, Wilmington, DE (US)
Filed by III Holdings 4, LLC, Wilmington, DE (US)
Filed on Sep. 14, 2015, as Appl. No. 14/853,904.
Application 14/853,904 is a continuation of application No. 13/176,738, filed on Jul. 5, 2011, granted, now 9,167,339.
Claims priority of provisional application 61/362,211, filed on Jul. 7, 2010.
Prior Publication US 2016/0007109 A1, Jan. 7, 2016
This patent is subject to a terminal disclaimer.
Int. Cl. H04R 29/00 (2006.01); H04R 1/10 (2006.01)
CPC H04R 1/10 (2013.01) [H04R 1/1091 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A device comprising:
a processor configured to receive a digital audio signal;
a memory storing instructions that, when executed by the processor, cause the processor to—
monitor a sound pressure level corresponding to an amplitude of the digital audio signal;
determine an estimated amount of hearing damage based on an amount of time that the sound pressure level exceeds a regeneration threshold;
determine an estimated amount of hearing regeneration based on an amount of time that the sound pressure level is less than or equal to the regeneration threshold;
update a damage counter based on the estimated amount of hearing damage and the estimated amount of hearing regeneration; and
generate an adjusted audio signal, wherein generating the adjusted audio signal comprises adjusting the amplitude of the digital audio signal by an amount corresponding to a difference between the damage counter and a predetermined damage threshold; and
a transducer coupled to the processor, wherein the transducer is configured to output the adjusted audio signal.