This file is indexed.

/usr/share/jconvolver/config-files/spacenet/hamilton-amb.conf is in jconvolver-config-files 0.9.2-1.

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) 2007-2009 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 -- Hamilton Mausoleum, Scotland.
# ---------------------------------------------------------
#
# Origin of IR files: http://space-net.org.uk/node/52
#
# Description on the space-net site:
#
# Construction on the Hamilton Mausoleum, Hamilton, Scotland, built
# for the 10th Duke of Hamilton, started in 1842 and was completed
# in 1858. It is constructed of marble and sandstone and is surmounted
# by a dome 36m in height, with two main spaces, a crypt in the lower
# section, and a chapel that was supposed to be used for worship.
# However the construction materials, size, shape and dimensions of the
# latter result in a complex, dense and very long reverberation, and
# hence render it almost useless for speech presentation. In fact the
# Guinness Book of World Records claims that the Hamilton Mausoleum has
# the longest “echo” of any building, recorded on 27 May 1994 as taking
# 15s for the sound of the reverberation caused by slamming one of the
# main doors to die away to nothing. The space is now often used by
# recording musicians for its unique acoustic properties. The interior
# of Hamilton Mausoleum is approximately octagonal in plan, with a
# diameter of 18 m. Each side of the octagon is either a plane wall or
# a further semicircular alcove. The results presented below having the
# microphone assembly in the centre and the source placed to one side,
# just outside one of the alcoves, giving a source-receiver distance
# of 4.8 m.
#
# Location: Hamilton, Scotland, UK
# Size (Approx): 9000m3
# 
# Source: Log. Swept Sine; 20-22k Hz; 15s long
# Input: Genelec S30D
# Source Location: Centre of mausoleum main chamber
# Mic Location: Edge of chamber at entrance to alcove
# Source-Microphone Distance: 4.8m
# Microphone: Soundfield SPS-422B
#
# ISO 3382 - T30:
# Freq (Hz) 	31.5 	63 	125 	250 	500 	1k 	2k 	4k 	8k 	16k
# T30 (s) 	24.3 	20.5 	18.7 	15.3 	12.4 	9.32 	6.06 	3.50 	1.49 	0.62
#
#  -----------------------------------------------------------------------------
#
# Comments (FA):
#
# The two original WAV files have been combined into a single 4-ch
# WAVEX file using makemulti, without any further changes. You can
# also use the originals.
#
# Measuring and viewing the responses revealed what are probably gain
# errors in the equipment used to capture the responses. These are 
# approximately corrected by the gain factors used below.
#
# The offset of 786 samples cuts off the direct sound and the first
# 5 ms of the response.
#
#  -----------------------------------------------------------------------------
#
# Replace by whatever required...
#
/cd /audio/reverbs/spacenet
#
#
#                in  out   partition    maxsize
# -----------------------------------------------
/convolver/new    1    4         256     721000
#
#
/input/name   1   Input
#
/output/name  1   Out.W
/output/name  2   Out.X
/output/name  3   Out.Y
/output/name  4   Out.Z
#
#
#               in out  gain  delay  offset  length  chan      file  
# ---------------------------------------------------------------------
#
/impulse/read    1   1   0.20   0     786       0      1   HM2_000_WXYZ_48k.amb
/impulse/read    1   2   0.36   0     786       0      2   HM2_000_WXYZ_48k.amb
/impulse/read    1   3   0.36   0     786       0      3   HM2_000_WXYZ_48k.amb
/impulse/read    1   4   0.36   0     786       0      4   HM2_000_WXYZ_48k.amb
#
#
# Or using the original files:
#
#
#/impulse/read    1   1   0.20   0     786       0      1   HM2_000_WX_48k.wav
#/impulse/read    1   2   0.36   0     786       0      2   HM2_000_WX_48k.wav
#/impulse/read    1   3   0.36   0     786       0      1   HM2_000_YZ_48k.wav
#/impulse/read    1   4   0.36   0     786       0      2   HM2_000_YZ_48k.wav
#