/usr/share/ambdec/presets/cube.ambdec is in ambdec 0.5.1-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 | # AmbDec configuration
# Written by Makedec-0.8.0 at Sun Sep 4 22:17:16 2011
/description cube, max rV at LF, max rE at HF
/version 3
/dec/chan_mask f
/dec/freq_bands 2
/dec/speakers 8
/dec/coeff_scale fuma
/opt/input_scale fuma
/opt/nfeff_comp input
/opt/delay_comp off
/opt/level_comp off
/opt/xover_freq 400
/opt/xover_ratio 0.0
/speakers/{
add_spkr LFU 2.000 45.0 35.3 system:playback_1
add_spkr RFU 2.000 -45.0 35.3 system:playback_2
add_spkr RBU 2.000 -135.0 35.3 system:playback_3
add_spkr LBU 2.000 135.0 35.3 system:playback_4
add_spkr LFD 2.000 45.0 -35.3 system:playback_5
add_spkr RFD 2.000 -45.0 -35.3 system:playback_6
add_spkr RBD 2.000 -135.0 -35.3 system:playback_7
add_spkr LBD 2.000 135.0 -35.3 system:playback_8
/}
/lfmatrix/{
order_gain 1.00000 1.00000 1.00000 1.00000
add_row 0.176780 0.216600 0.216320 0.216600
add_row 0.176780 -0.216600 0.216320 0.216600
add_row 0.176780 -0.216600 0.216320 -0.216600
add_row 0.176780 0.216600 0.216320 -0.216600
add_row 0.176780 0.216600 -0.216320 0.216600
add_row 0.176780 -0.216600 -0.216320 0.216600
add_row 0.176780 -0.216600 -0.216320 -0.216600
add_row 0.176780 0.216600 -0.216320 -0.216600
/}
/hfmatrix/{
order_gain 2.00000 1.15400 1.00000 1.00000
add_row 0.176780 0.216600 0.216320 0.216600
add_row 0.176780 -0.216600 0.216320 0.216600
add_row 0.176780 -0.216600 0.216320 -0.216600
add_row 0.176780 0.216600 0.216320 -0.216600
add_row 0.176780 0.216600 -0.216320 0.216600
add_row 0.176780 -0.216600 -0.216320 0.216600
add_row 0.176780 -0.216600 -0.216320 -0.216600
add_row 0.176780 0.216600 -0.216320 -0.216600
/}
/end
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