Method of checking earphone wearing state

摘要

An information processing apparatus that detects an output from a 3-axis acceleration sensor included in an earphone unit worn by a user while the user is in a still state; monitors the output of the 3-axis acceleration sensor while a nodding gesture is performed by the user; detects a time when an angle of the nodding gesture reaches a maximum; and determines an earphone wearing state based on the output from the 3-axis acceleration sensor in the still state and the output from the 3-axis acceleration sensor at the time of detecting the maximum nodding angle.