LibAAVE demonstration GUI: the movements of the virtual source (loudspeaker) and listener (face) within the room are controlled using the mouse; head orientation can be controlled using the mouse or a head-tracking device (Intersense InertiaCube BT). The lines between represent the sound paths from 'visible' sources up to the reflection order specified by the user. The binaural output at the listener position is played in real time on headphones.