ALEXANDRIA, Va., March 12 -- United States Patent no. 12,250,512, issued on March 11.
"Acoustic reflex detection" was invented by David Patrick Warner (Overland Park, Kan.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A system and method for automatically and dynamically controlling the output (e.g., volume) of an audio headphone device is disclosed, which includes detecting the invocation of the acoustic reflex with an audio headphone device. The disclosed system can measure the response of the tympanic membrane and middle ear to various SPL and frequencies. That information may be used for automated or customized warning or limiting levels either within the headphone, or at the audio playback device."
Th...