Apple Inc.
Acoustic in ear detection for a hearable device

Abstract:

A method for determining a current usage state of an earphone that includes a speaker and an air pressure sensor. The method obtains a pressure signal from the air pressure sensor that indicates air pressure proximate to the earphone, the air pressure sensor produces the pressure signal in response to the earphone being inserted into an ear of a user. The method processes the obtained pressure signal to determine that the earphone is in a state of use, and in response, performs at least one of (1) outputting an audio signal through the speaker signifying that the earphone is in use (2) establishing a wireless connection with a media playback device to exchange data between the earphone and the media playback device, or combination thereof.