Binaural Filter   

The Binaural Filter function in SoundHack allows for   the imitation of sound movement in a 3-D field. 
As hearing is binaural, localization is achieved via slight time delays, frequency differences and amplitude changes between the two ears.  The binaural filter approximates these differences and allows for the control of sound movement. 
The window shows an image of a small head around which the sound may be placed.  By damping certain high frequencies the sound is given the impression it is behind the head and by changing amplitude in each ear it is given the impression of moving from side to side. 

Dynamic sound movement may be imitated by selecting "moving angle" and editing the "moving angle" function. 

In addition, the illusion of vertical movement may be implemented by selecting "lowered," "elevated" or "ear level" (no vertical movement).