Simulation of Directional Cues

Directional cues may be provided by

1. using several loudspeakers;
2. creating an illusion.
   • a listener positioned equidistant from two loudspeakers L and R receives equal signal in each ear;
   • the illusion is of a source centered at I1.

     Figure 5: Listener positioned equidistant from two loudspeakers.

     
     
     
   • delaying the signal applied to loudspeaker R (equivalent to moving R farther to the right) causes the sound to reach the left ear first;
   • the illusion is of a source location shifted to I2.

Simulating ITD cues requires very contrived conditions (e.g. headphones or a fixed position).