/usr/share/jconvolver/config-files/xtalk-cancel/EYCv2-48.conf is in jconvolver-config-files 0.9.2-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#
# Copyright (C) 2006-2011 Fons Adriaensen <fons@linuxaudio.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
# -----------------------------------------------------------------------------
#
#
# jconvolver configuration
# ------------------------
#
# This configuration implements a stereo crosstalk cancellation
# processor using the filters created by Prof. Edgar Choueiri
# of Princeton University. These filters are the best available
# to my knowledge. They are included here with permission of
# the author.
#
# To use this, your speakers should be placed close together
# so you see an angle of about 20 degrees between them when
# seated at 2 meters distance in front. The 'sweet area' is
# not very large, but if you are within it the results can
# be quite striking.
#
# This file is for use at 48 kHz.
#
#
# Replace by whatever required...
#
/cd /home/fons/acoustics/impresp/xtc
#
# in out partition maxsize density
# -------------------------------------------------------
/convolver/new 2 2 256 4096 1.0
#
# in out gain delay offset length chan file
# --------------------------------------------------------------------------
/impulse/read 1 1 1 0 0 0 1 EYCv2L48.wav
/impulse/read 1 2 1 0 0 0 1 EYCv2R48.wav
/impulse/copy 2 1 1 2
/impulse/copy 2 2 1 1
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