2D_HP_decoder_example.pd

is best used with Pd vanilla
requires having the Pd externals installed:
iemlib, 
iemmatrix,
zexy.

The demo is based on KU100 Dummy head HRIRs (360CIRC) 
taken by Benjamin Bernschütz at TH Cologne.

Coded by Franz Zotter 2020 
for Grundlagen der immersiven 3D Audiotechnik VO
to show the fundamental difference of using
only a sparse set of HRIRs for decoding to headphones,
which entails slight direction-dependent comb filtering 
and slight directional inconcistency but reasonable timbre overall, 
or otherwise a dense set of HRIRs that suffers severly from loss
of high frequencies frontally and in the back.
Currently the best solution is MagLS and listening
to it makes this quite obvious...
It discards the precise direction dependency of HRTF
phase values above kr=N.
