US Patent 10044448 Sonic signaling communication for user devices

A system, methods, and apparatus for sonic signaling communication are disclosed. In an example embodiment, a broadcast device transmits a sonic signal including an audible signal component including primary information and an inaudible signal component including secondary information. The primary information is audibly transmitted from the broadcast device for reception by a user. The inaudible signal component is received by a user device configured to take an action responsive to the receipt of the secondary information.