US Patent 9584653 Smartphone with user interface to externally localize telephone calls

A user interface of an electronic device includes icons that enable a user to answer a telephone call in monophonic sound or binaural sound. When the telephone call is answered in binaural sound, the electronic device convolves a voice in the call with head related transfer functions (HRTFs) of a person so the voice localizes to an external location that is away from but proximate to the person.