tab_lbc.c

一个非常好用的国际标准G。726算法

   -856,   -422,   -411,  -1059,
   -747,   -355,   -582,  -1644,
   -837,    210,   -916,  -1144,
  -1800,     32,   -878,  -1687,
    -48,    -23,  -1146,     52,
   -350,   -409,  -1656,   -364,
    265,   -728,   -858,   -577,
    458,   -247,  -1141,   -997,
    691,   -407,  -1988,  -1161,
    -66,   -104,   -705,  -1249,
   -431,    -93,  -1191,  -1844,
    203,   -732,  -1000,  -1693,
     10,   -832,  -1846,  -1819,
    493,   -128,  -1436,  -1768,
    488,   -311,  -1730,  -2540,
   -653,   -532,  -1150,  -1172,
  -1086,   -289,  -1706,  -1533,
   -699,  -1205,  -1216,  -1766,
  -1032,  -1481,  -2074,  -1523,
   -721,  -1220,  -2277,  -2600,
     12,   -539,  -1484,  -1131,
    -40,   -911,  -2106,   -441,
   -471,   -484,  -2267,  -1549,
   -141,   -988,  -3006,  -1721,
  -1545,  -2102,   -583,    342,
  -1383,  -2772,   -386,    -13,
  -2118,  -2589,  -1205,     72,
  -2147,  -3231,   -965,    390,
  -2949,  -3300,   -621,    637,
  -3907,  -4138,   -865,    803,
  -1287,   -845,   -375,   -548,
  -1416,  -1169,   -487,  -1277,
  -1400,  -1690,  -1027,   -418,
  -2018,  -1909,  -1188,  -1260,
  -1418,  -2222,  -2029,   -128,
  -2067,  -2998,  -2693,   -310,
   -950,  -1028,  -1538,    185,
  -1616,   -915,  -2205,   -549,
     19,   -821,  -1145,    352,
    184,  -1175,  -1356,   -627,
   -547,  -1088,  -1661,   -911,
   -216,  -1502,  -2197,   -948,
   -795,  -1306,  -2374,   -451,
   -924,  -1889,  -2796,   -680,
   -600,  -1614,  -3609,   -885,
  -2392,  -2528,    319,    303,
  -2908,  -2095,   -310,    573,
  -3460,  -2141,     49,   -113,
  -2231,   -448,    675,   -146,
  -2805,   -532,   1231,    479,
  -2684,   -486,   -200,    611,
  -3525,   -971,   -198,    704,
  -3707,    173,    349,    254,
  -4734,  -1447,    -34,    880,
    777,   -512,    114,    -10,
   1250,    -66,    442,     -5,
    604,    613,    452,   -352,
   1224,    777,    675,  -1014,
  -1372,    -79,  -1208,   -238,
  -2389,    -17,  -1157,   -818,
  -1504,   -673,  -1133,  -1060,
  -1984,   -799,  -2005,  -1973,
  -2037,   -798,  -1068,   -105,
  -3190,   -899,  -1817,   -194,
   -156,   -886,    394,   -318,
   -258,  -1283,    551,    202,
   -536,  -1729,    910,    331,
   -847,  -1109,    795,   -163,
  -1171,  -1128,    715,    519,
  -1080,  -1319,   1685,    668,
  -1000,  -1921,     96,    211,
  -1487,  -2148,    831,    174,
  -1139,   -374,    414,     -4,
  -1517,  -1383,    396,   -352,
  -1012,    439,    -59,   -967,
  -1812,    706,   -440,  -1030,
  -1971,   -329,    -34,   -827,
  -2472,  -1588,   -151,   -606,
  -2161,    374,   -281,     76,
  -3012,    231,    -15,   -690,
   1104,    566,    721,    209,
   1685,    564,    383,     98,
   1898,    750,    792,    -97,
    556,    -64,    561,    -93,
    876,    162,    913,    -22,
    961,    675,   1296,    140,
    756,   -396,    851,    544,
    360,   -303,   1341,    396,
    878,    -22,   1464,    863,
   -309,   -273,    642,   -129,
   -686,    -82,    842,    454,
     -5,    -47,   1069,    998,
    -94,    967,   1277,    298,
   -489,    385,   1473,    746,
   -369,   -717,   1333,    242,
    281,   -993,   1726,    924,
    464,    601,   1575,   1376,
   -250,    206,   2339,   1175,
   -438,    377,   -597,   -285,
  -1020,    787,   -790,   -287,
   -458,   -410,    215,    295,
   -589,   -860,   -121,    797,
  -1175,    122,   -437,    466,
  -1480,   -121,    367,    924,
    234,    323,    770,   -555,
    145,     30,    996,     26,
     66,    849,     93,   -145,
   -117,   1261,    474,   -399,
  -1495,   1051,    218,   -506,
  -1390,    694,    994,     88,
    616,      7,     78,    304,
   1060,     52,    -62,    835,
    833,    454,    649,   1359,
   -770,    464,     47,     93,
   -574,   1199,    -39,    379,
    114,    -98,    488,    485,
    727,    244,    606,    696,
    -76,    455,    671,    546,
   -565,    -13,    145,    819,
   -376,    569,    448,   1128,
    218,    122,    265,   1167,
    230,    738,    932,   1003,
    138,    477,     36,    450,
    404,    787,    -73,   1000,
    497,   1259,    387,   1231,
     17,    207,    195,    -79,
    562,    358,     53,   -158,
    493,    387,    478,    189,
    678,    831,    640,    558,
   -197,    523,    613,     57,
    429,    894,    769,    111,
     67,   1174,    568,    511,
   1242,    824,    251,    840,
   1419,   1074,    864,    481,
    924,   1474,    669,    724,
   1539,   1879,    654,   1590,
    445,    337,   1111,    541,
    472,   1421,   1264,   1094,
    794,    735,   1103,    668,
   1055,    863,   1192,   1020,
    778,   1105,    806,   1798,
   1052,   1527,   1587,   2151,
    881,   1552,   1265,    391,
    726,    872,   1812,    601,
   1469,    280,   1008,    616,
   1403,    577,   1803,   1244,
   1650,   1314,   1148,   1072,
   1297,   1669,   1911,   1026,
   2093,   1044,   2115,   1189,
   1644,   1961,   2587,   1512,
     25,   -315,     -9,   -106,
    290,   -339,    428,   -444,
    -68,   -783,    735,    772,
    245,   -555,    468,     47,
    334,   -895,    814,    146,
    235,    368,   -964,   -959,
   -203,    315,  -1566,  -1217,
    801,     17,   -276,   -354,
    894,   -495,   -789,   -635,
    716,    291,  -1189,   -357,
    560,   -260,   -733,     -2,
    679,   -508,  -1429,    211,
    -51,    -62,   -428,    557,
    322,   -638,   -211,    614,
   -878,  -1057,    -84,    -71,
   -388,  -1415,   -167,   -318,
   -754,  -1574,    214,   -539,
  -1419,  -2004,    -92,   -787,
    -47,   -856,   -347,   -255,
     23,  -1211,   -173,    320,
   -658,   -487,   -893,    353,
   -783,  -1587,   -584,    507,
  -1420,   -859,   -378,    441,
  -2095,  -1491,   -137,    439,
   -321,  -1450,  -1288,    -12,
   -359,  -2113,   -553,     -8,
   -831,  -1918,  -1561,     32,
  -1014,  -2487,  -1359,   -939,
   -475,   -311,   -169,   -236,
   -907,   -426,    276,   -611,
    -96,   -400,     50,   -710,
   -426,  -1022,    -10,   -985,
   -197,   -258,   -744,   -575,
   -611,   -930,   -771,   -394,
   -267,   -776,   -612,   -939,
   -256,  -1346,   -802,  -1122,
   -796,  -1570,   -825,   -754,
    712,    876,    141,    227,
    981,   1509,     85,    124,
   1462,   1228,    979,    -39,
   1734,    999,   1481,    440,
   2293,   1116,    769,    440,
   2504,   1480,   1241,    356,
   2474,   1909,   1558,    810,
    917,   1134,    607,   -134,
    509,   1809,    781,   -123,
   1712,   1506,    559,   -423,
   2037,   2317,    726,   -155,
   3031,   2676,   1203,    331,
   3664,   3274,   1768,    531,
   1610,   1839,    867,    183,
   1774,   1972,   1538,     97,
   1822,   2158,   1282,    659,
   2222,   2758,   1818,    900,
   3251,   2124,   1723,    996,
   3633,   2336,   2408,   1453,
   2923,   3517,   2567,   1318,
   } ;

/*
**  BandQntTable:
**
**  Purpose:
**      collects the three subvector tables.
*/


Word16  *BandQntTable[LspQntBands] = {
   Band0Tb8 ,
   Band1Tb8 ,
   Band2Tb8 ,
   } ;

/*
**  PerFiltZeroTable:
**
**  Purpose:
**     Creates the FIR part of the formant perceptual weighting filter. 
**     Corresponds to gamma1 in section 2.8.
**
**  Table Structure:
**     (0.9) to the x power, where x = [1,..,10]
**     These values are scaled by 32768.
*/

Word16   PerFiltZeroTable[LpcOrder] = {
   29491 ,
   26542 ,
   23888 ,
   21499 ,
   19349 ,
   17414 ,
   15673 ,
   14106 ,
   12695 ,
   11425 ,
   } ;

/*
**  PerFiltPoleTable:
**
**  Purpose:
**     Creates the IIR part of the formant perceptual weighting filter. 
**     Corresponds to gamma2 in section 2.8.
**
**  Table Structure:
**     (0.5) to the x power, where x = [1,..,10]
**     These values are scaled by 32768
*/

Word16   PerFiltPoleTable[LpcOrder] = {
   16384 ,
    8192 ,
    4096 ,
    2048 ,
    1024 ,
     512 ,
     256 ,
     128 ,
      64 ,
      32 ,
   } ;

/*
**  PostFiltZeroTable:
**
**  Purpose:
**     Creates the FIR part of the formant postfilter.  Corresponds to
**     lambda1 in section 3.8.
**
**  Table Structure:
**     (0.65) to the x power, where x = [1,..,10]
**     These values are scaled by 32768
*/

Word16   PostFiltZeroTable[LpcOrder] = {
  21299 ,
  13844 ,
   8999 ,
   5849 ,
   3802 ,
   2471 ,
   1606 ,
   1044 ,
    679 ,
    441 ,
   } ;

/*
**  PostFiltPoleTable:
**
**  Purpose:
**     Creates the IIR part of the formant postfilter.  Corresponds to
**     lambda2 in section 3.8.
**
**  Table Structure:
**     (0.75) to the x power, where x = [1,..,10]
**     These values are scaled by 32768
*/

Word16   PostFiltPoleTable[LpcOrder] = {
 24576 ,
 18432 ,
 13824 ,
 10368 ,
  7776 ,
  5832 ,
  4374 ,
  3281 ,
  2460 ,
  1845 ,
   } ;

/*
**  Nb_puls:
**
**  Purpose:
**      Indexing
**
**  Table Structure:
**      Table values are the number of non-zero pulses in the high-rate
**      excitation (MP-MLQ), indexed by subframe number (0,..,3).
*/

Word16   Nb_puls[4] = { 6,5,6,5};

/*
**  FcbkGainTable:
**
**  Purpose:
**      Logarithmic scalar quantizer in 24 steps of 3.2 dB each
**
**  Table Structure:
**      Contains x where 20*log10(x) = 3.2*i,  i = 1,..,24
*/

Word16   FcbkGainTable[NumOfGainLev] = {
    1 ,
    2 ,
    3 ,
    4 ,
    6 ,
    9 ,
   13 ,
   18 ,
   26 ,
   38 ,
   55 ,
   80 ,
  115 ,
  166 ,
  240 ,
  348 ,
  502 ,
  726 ,
 1050 ,
 1517 ,
 2193 ,
 3170 ,
 4582 ,
 6623 ,
   } ;

/*
**  MaxPosTable:
**
**  Purpose:
**      size of the high rate fixed excitation codebooks (MP-MLQ)
**
**  Table Structure:
**      Table values are the number of codewords in the high rate fixed
**      excitation codebook (MP-MLQ), indexed by subframe number (0,..,3).
**      MaxPosTable[i] is the number of combinations of i elements among 30
**      non-zero pulses in the high-rate
*/

Word32   MaxPosTable[4] = {
 0x00090f6fL ,
 0x00022caaL ,
 0x00090f6fL ,
 0x00022caaL ,
   } ;

/*
**  CombinatorialTable:
**
**  Purpose:
**      used for the coding and the decoding of the pulses positions
**      for the high-rate fixed excitation codebook
**
**  Table Structure:
**      CombinatorialTable[i][j] is the number of combinations of
**      (MaxPulsNum-1-i) elements among (SubFrLen-2-j)
*/

Word32   CombinatorialTable[MaxPulseNum][SubFrLen/Sgrid] = {
 { 118755L ,
  98280L ,
  80730L ,
  65780L ,
  53130L ,
  42504L ,
  33649L ,
  26334 ,
  20349 ,
  15504 ,
  11628 ,
   8568 ,
   6188 ,
   4368 ,
   3003 ,
   2002 ,
   1287 ,
    792 ,
    462 ,
    252 ,
    126 ,
     56 ,
     21 ,
      6 ,
      1 ,
      0 ,
      0 ,
      0 ,
      0 ,
     0 },

 { 23751 ,
  20475 ,
  17550 ,
  14950 ,
  12650 ,
  10626 ,
   8855 ,
   7315 ,
   5985 ,
   4845 ,
   3876 ,
   3060 ,
   2380 ,
   1820 ,
   1365 ,
   1001 ,
    715 ,
    495 ,
    330 ,
    210 ,
    126 ,
     70 ,
     35 ,
     15 ,
      5 ,
      1 ,
      0 ,
      0 ,
      0 ,
    0 } ,

  { 3654 ,
   3276 ,
   2925 ,
   2600 ,
   2300 ,
   2024 ,
   1771 ,
   1540 ,
   1330 ,
   1140 ,
    969 ,
    816 ,
    680 ,
    560 ,
    455 ,
    364 ,
    286 ,
    220 ,
    165 ,
    120 ,
     84 ,
     56 ,
     35 ,
     20 ,
     10 ,
      4 ,
      1 ,
      0 ,
      0 ,
    0 } ,