/usr/share/ambdec/presets/itu5.1-ord2-optim.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 | # AmbDec configuration
# Written by Makedec-0.8.0 at Sun Sep 4 22:31:12 2011
/description Optimised ITU 5.1 decoder found by genetic search.
/version 3
/dec/chan_mask 11b
/dec/freq_bands 2
/dec/speakers 5
/dec/coeff_scale fuma
/opt/input_scale fuma
/opt/nfeff_comp input
/opt/delay_comp off
/opt/level_comp off
/opt/xover_freq 600
/opt/xover_ratio 0.0
/speakers/{
add_spkr LS 1.500 110.0 0.0 system:playback_1
add_spkr LF 1.500 30.0 0.0 system:playback_2
add_spkr CE 1.500 0.0 0.0 system:playback_3
add_spkr RF 1.500 -30.0 0.0 system:playback_4
add_spkr RS 1.500 -110.0 0.0 system:playback_5
/}
/lfmatrix/{
order_gain 1.00000 1.00000 1.00000 1.00000
add_row 0.420330 0.330200 -0.312250 0.019350 -0.027010
add_row 0.197700 0.288820 0.287820 0.049110 0.007420
add_row 0.058030 0.000000 0.205970 0.000000 0.050790
add_row 0.197700 -0.288820 0.287820 -0.049110 0.007420
add_row 0.420330 -0.330200 -0.312250 -0.019350 -0.027010
/}
/hfmatrix/{
order_gain 1.00000 1.00000 1.00000 1.00000
add_row 0.562520 0.273150 -0.216490 0.087300 -0.072220
add_row 0.327620 0.278030 0.287910 0.194760 0.041400
add_row 0.193300 0.000000 0.289720 0.000000 0.219660
add_row 0.327620 -0.278030 0.287910 -0.194760 0.041400
add_row 0.562520 -0.273150 -0.216490 -0.087300 -0.072220
/}
/end
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