Patent ID: 8843101

Claim:
An apparatus wearable by a user for detecting a user state, comprising: an accelerometer for measuring an acceleration of the user; a magnetometer for measuring a magnetic field associated with the user and calculation of an orientation of the user based on a measured magnetic field; a microphone for receiving audio; a memory for storing the audio; and at least one processor communicatively connected to the accelerometer, the magnetometer, the microphone, and the memory, and configured to: identify a measured acceleration and a change of orientation of the user as a suspected user state; extract at least one feature from the stored audio and at least one of the measured acceleration and the change of orientation, where the at least one feature is an inter-signal dynamic property that is based on relationships between audio energy and physical movement, and the inter-signal dynamic property is one of elapsed time between acceleration and audio peaks and acceleration and rotation rate peaks; categorize the suspected user state based on the at least one feature as one of an activity of daily life (ADL), a confirmed user state indicating that a fall has occurred, and an inconclusive event; transmit the stored audio and at least one of the measured acceleration and the change of orientation to the cloud computing system; and receive a re-confirmation or change of classification from the cloud computing system based on the stored audio and at least one of the measured acceleration and the change of orientation.