Hi,

I made some attempts at spatial audio a while ago.  I think it is in
mikelson.zip in the directory space available from:

ftp://ftp.maths.bath.ac.uk/pub/dream/documentation/orchestras+scores/

The file is pretty big but there may be some other useful items in it.  It
implements 2D spatial audio not 3D, height is not included in my orc but you
may be able to add some cues using pareq to boost a peak corresponding to
the pinna notch (~10 kHz)  Then notch out according to the graphs available
from:

http://www-engr.sjsu.edu/~knapp/HCIROD3D/3D_home.htm

Bye,
Hans Mikelson