1. The directional information is perceived due to the stereo sound. If you manage to give the location information to the receiver somehow it can generate the

1. The directional information is perceived due to the stereo sound. If you manage to give the location information to the receiver somehow it can generate the stereo sound appropriately. Maybe by using an ultrasound sender and receivers that are located near one's ears. 2. Beeping was just an example. Just "encode" the information as motor noise and it will sound more "natural".