Head Occlusion Study

BEM Modelling of Head Occlusion

Model Setup

Simulation to illustrate the effect of head occlusion on the sound recieved at the ears.

This information may form the basis of a head related transfer function (HRTF).

Source emitting 3kHz tone is positioned at ear height and rotated at 10 degree intervals in an arc beginning in front of the head and extending around to 90 degrees.  The source tracks an arc at 2 distances, 0.25m to model the effect when the source is close to the head and at 3m to model a more distant source.  The sound waves arriving at the head can be viewed with a plane of acoustic display elements.  Frequency responses are presented to show the normalised sound pressure levels at each ear as the source moves around the head.

 

Source Close to Head (0.25m)

 

Source Distant from Head (3m)