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annotate src/lsp_lsf.tab @ 2:c511bfb36c2a

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beginning of EFR2 decoder, using AMR version of AGC module
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 03 Apr 2024 05:47:51 +0000
parents 56410792419a
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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56410792419a src: original EFR source from ETSI
Mychaela Falconia <falcon@freecalypso.org>
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1 /*-----------------------------------------------------*
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2 | Tables for function Lsf_lsp() and Lsp_lsf() |
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3 -----------------------------------------------------*/
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4
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5 /* table of cos(x) */
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6
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7 static const Word16 table[65] =
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Mychaela Falconia <falcon@freecalypso.org>
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8 {
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9 32767, 32729, 32610, 32413, 32138, 31786, 31357, 30853,
56410792419a src: original EFR source from ETSI
Mychaela Falconia <falcon@freecalypso.org>
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10 30274, 29622, 28899, 28106, 27246, 26320, 25330, 24279,
56410792419a src: original EFR source from ETSI
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11 23170, 22006, 20788, 19520, 18205, 16846, 15447, 14010,
56410792419a src: original EFR source from ETSI
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12 12540, 11039, 9512, 7962, 6393, 4808, 3212, 1608,
56410792419a src: original EFR source from ETSI
Mychaela Falconia <falcon@freecalypso.org>
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13 0, -1608, -3212, -4808, -6393, -7962, -9512, -11039,
56410792419a src: original EFR source from ETSI
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14 -12540, -14010, -15447, -16846, -18205, -19520, -20788, -22006,
56410792419a src: original EFR source from ETSI
Mychaela Falconia <falcon@freecalypso.org>
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15 -23170, -24279, -25330, -26320, -27246, -28106, -28899, -29622,
56410792419a src: original EFR source from ETSI
Mychaela Falconia <falcon@freecalypso.org>
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16 -30274, -30853, -31357, -31786, -32138, -32413, -32610, -32729,
56410792419a src: original EFR source from ETSI
Mychaela Falconia <falcon@freecalypso.org>
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17 (Word16) 0x8000
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18 };
56410792419a src: original EFR source from ETSI
Mychaela Falconia <falcon@freecalypso.org>
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19
56410792419a src: original EFR source from ETSI
Mychaela Falconia <falcon@freecalypso.org>
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20 /* 0x8000 = -32768 (used to silence the compiler) */
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21
56410792419a src: original EFR source from ETSI
Mychaela Falconia <falcon@freecalypso.org>
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22 /* slope used to compute y = acos(x) */
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23
56410792419a src: original EFR source from ETSI
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24 static const Word16 slope[64] =
56410792419a src: original EFR source from ETSI
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25 {
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26 -26887, -8812, -5323, -3813, -2979, -2444, -2081, -1811,
56410792419a src: original EFR source from ETSI
Mychaela Falconia <falcon@freecalypso.org>
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27 -1608, -1450, -1322, -1219, -1132, -1059, -998, -946,
56410792419a src: original EFR source from ETSI
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28 -901, -861, -827, -797, -772, -750, -730, -713,
56410792419a src: original EFR source from ETSI
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29 -699, -687, -677, -668, -662, -657, -654, -652,
56410792419a src: original EFR source from ETSI
Mychaela Falconia <falcon@freecalypso.org>
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30 -652, -654, -657, -662, -668, -677, -687, -699,
56410792419a src: original EFR source from ETSI
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31 -713, -730, -750, -772, -797, -827, -861, -901,
56410792419a src: original EFR source from ETSI
Mychaela Falconia <falcon@freecalypso.org>
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32 -946, -998, -1059, -1132, -1219, -1322, -1450, -1608,
56410792419a src: original EFR source from ETSI
Mychaela Falconia <falcon@freecalypso.org>
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33 -1811, -2081, -2444, -2979, -3813, -5323, -8812, -26887
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34 };