lpc.c

AMR-NB 的编码实现,纯C, VC下建立工程即可用.

    421, 314, 449, 342,
    329, 126, 673, 292,
    571, 388, 243, 193,
    653, 320, 621, 280,
    194, 380, 517, 581,
    45, 323, 111, 422,
    489, 395, 734, 534,
    622, 546, 486, 502,
    318, 572, 189, 550,
    385, 422, -157, 153,
    -125, 382, -197, 386,
    -263, 334, 228, 697,
    -188, 1, 51, 297,
    -507, 213, -376, 397,
    -24, 255, -547, 89,
    -502, -94, 387, 179,
    -620, 68, -684, 112,
    -642, -350, -260, 172,
    -438, -324, 264, 648,
    -964, -4, -1121, 7,
    -134, 134, -1133, -306,
    143, 96, -420, -497,
    -1221, -350, -1527, -685,
    -161, 72, 873, 691,
    732, 283, 921, 353,
    334, 475, 1095, 821,
    864, 524, 843, 497,
    714, 711, 788, 750,
    1076, 714, 1204, 753
};


#define PAST_RQ_INIT_SIZE 8
 
/* initalization table for MA predictor in dtx mode */
static Word16 past_rq_init[80] = {
  -258, -318, -439, -634, -656, -773, -711, -502, -268, -193,
    -2,  125,  122,  -39,   -9,  105,  129,  283,  372,  575,
  -277, -324, -197, -487, -445, -362, -292,  -27,  177,  543,
   342,  517,  516,  130,   27, -104, -120, -140,  -74,  -56,
  -564, -943,-1520, -965, -814, -526, -322,   -2,  159,  657,
  -312, -284, -386, -597, -493, -526, -418, -229,  105,  449,
  -557, -870,-1075, -919, -950, -752, -709, -316,   62,  486,
  -314, -191, -203, -330, -160, -103,  -51,  131,  338,  515
};


static Word16 mean_lsf[10] = {
     1546,
     2272,
     3778,
     5488,
     6972,
     8382,
    10047,
    11229,
    12766,
    13714 
};


static Word16 pred_fac[10] = {
     9556,
    10769,
    12571,
    13292,
    14381,
    11651,
    10588,
     9767,
     8593,
     6484 
};


#define DICO1_SIZE  256
#define DICO2_SIZE  512
#define DICO3_SIZE  512

/* first codebook from IS641 */

static Word16 dico1_lsf[] = {
  6, 82, -131,
  154, -56, -735,
  183, -65, -265,
  9, -210, -361,
  113, 718, 1817,
  1010, 1214, 1573,
  857, 1333, 2276,
  827, 1568, 1933,
  717, 1989, 2206,
  838, 1172, 1823,
  721, 1000, 2154,
  286, 476, 1509,
  -247, -531, 230,
  147, -82, 569,
  26, -177, -944,
  -27, -273, 692,
  -164, -264, -183,
  224, 790, 1039,
  899, 946, 601,
  485, 771, 1150,
  524, 677, 903,
  -140, 375, 778,
  410, 676, 429,
  301, 530, 1009,
  719, 646, 38,
  226, 367, 40,
  145, -45, -505,
  290, 121, -121,
  302, 127, 166,
  -124, -383, -956,
  -358, -455, -977,
  715, 878, 894,
  978, 923, 211,
  477, 272, 64,
  188, -78, 17,
  -143, -65, 38,
  643, 586, 621,
  -134, -426, -651,
  347, 545, 2820,
  1188, 2726, 2442,
  142, -80, 1735,
  283, 130, 461,
  -262, -399, -1145,
  -411, 155, 430,
  329, 375, 779,
  53, -226, -139,
  -129, -236, 1682,
  285, 744, 1327,
  738, 697, 1664,
  312, 409, 266,
  325, 720, 135,
  1, 221, 453,
  8, 203, 145,
  299, 640, 760,
  29, 468, 638,
  103, 429, 379,
  420, 954, 932,
  1326, 1210, 1258,
  704, 1012, 1152,
  -166, -444, -266,
  -316, -130, -376,
  191, 1151, 1904,
  -240, -543, -1260,
  -112, 268, 1207,
  70, 1062, 1583,
  278, 1360, 1574,
  -258, -272, -768,
  19, 563, 2240,
  -3, -265, 135,
  -295, -591, -388,
  140, 354, -206,
  -260, -504, -795,
  -433, -718, -1319,
  109, 331, 962,
  -429, -87, 652,
  -296, 426, 1019,
  -239, 775, 851,
  489, 1334, 1073,
  -334, -332, 25,
  543, 1206, 1807,
  326, 61, 727,
  578, 849, 1405,
  -208, -277, 329,
  -152, 64, 669,
  -434, -678, -727,
  -454, -71, 251,
  605, 480, 254,
  -482, 11, 996,
  -289, 395, 486,
  722, 1049, 1440,
  -30, -316, -786,
  -106, -115, -619,
  861, 1474, 1412,
  1055, 1366, 1184,
  812, 1237, 925,
  42, -251, -576,
  342, 141, -454,
  -168, -80, 1359,
  -342, -656, -1763,
  100, 821, 725,
  990, 747, 800,
  332, 440, 568,
  663, 379, 852,
  112, 165, -369,
  597, 910, 282,
  -8, 834, 1281,
  -352, 572, 695,
  462, 2246, 1806,
  345, 190, 1374,
  416, 915, 2166,
  168, -82, 280,
  -516, -446, 840,
  47, 533, 44,
  -362, -711, -1143,
  22, 193, 1472,
  -85, 233, 1813,
  -62, 579, 1504,
  550, 944, 1749,
  723, 650, 1148,
  972, 884, 1395,
  -425, 643, 0,
  1000, 952, 1098,
  249, 1446, 672,
  -334, -87, 2172,
  -554, 1882, 2672,
  140, 1826, 1853,
  920, 1749, 2590,
  1076, 1933, 2038,
  -137, -443, -1555,
  1269, 1174, 468,
  -493, -122, 1521,
  -451, 1033, 1214,
  482, 1695, 1118,
  815, 649, 384,
  -446, -692, 107,
  -319, -605, -118,
  -207, -505, 525,
  -468, -12, 2736,
  75, 1934, 1305,
  880, 2358, 2267,
  1285, 1575, 2004,
  -48, -304, -1186,
  -435, -461, -251,
  -366, -404, -547,
  -289, -605, -597,
  -538, -810, -165,
  -120, 3, 356,
  639, 1241, 1502,
  96, 177, 750,
  -435, -585, -1174,
  -356, 109, -79,
  -485, 288, 2005,
  9, 1116, 731,
  880, 2134, 946,
  -265, 1585, 1065,
  1157, 1210, 843,
  -498, -668, 431,
  374, 321, -229,
  1440, 2101, 1381,
  449, 461, 1155,
  -105, 39, -384,
  -263, 367, 182,
  -371, -660, 773,
  -188, 1151, 971,
  1333, 1632, 1435,
  774, 1267, 1221,
  -482, -832, -1489,
  -237, -210, 860,
  890, 1615, 1064,
  472, 1062, 1192,
  185, 1077, 989,
  -568, -992, -1704,
  -449, -902, -2043,
  -142, -377, -458,
  -210, -554, -1029,
  -11, 1133, 2265,
  -329, -675, -893,
  -250, 657, 1187,
  519, 1510, 1779,
  520, 539, 1403,
  527, 1421, 1302,
  -563, -871, -1248,
  -147, -463, 879,
  -76, 2334, 2840,
  563, 2573, 2385,
  632, 1926, 2920,
  719, 2023, 1840,
  -545, -723, 1108,
  129, -125, 884,
  1417, 1632, 925,
  -94, 1566, 1751,
  -341, 1533, 1551,
  591, 395, -274,
  -76, 981, 2831,
  153, 2985, 1844,
  1032, 2565, 2749,
  1508, 2832, 1879,
  791, 1199, 538,
  -190, -453, 1489,
  -278, -548, 1158,
  -245, 1941, 2044,
  1024, 1560, 1650,
  512, 253, 466,
  -62, -323, 1151,
  -473, -376, 507,
  -433, 1380, 2162,
  899, 1943, 1445,
  134, 704, 440,
  460, 525, -28,
  -450, 279, 1338,
  0, 971, 252,
  -445, -627, -991,
  -348, -602, -1424,
  398, 712, 1656,
  -107, 314, -178,
  93, 2226, 2238,
  518, 849, 656,
  -462, -711, -447,
  174, -34, 1191,
  -119, 42, 1005,
  -372, 274, 758,
  1036, 2352, 1838,
  675, 1724, 1498,
  430, 1286, 2133,
  -129, -439, 0,
  -373, 800, 2144,
  6, 1587, 2478,
  478, 596, 2128,
  -428, -736, 1505,
  385, 178, 980,
  139, 449, 1225,
  -526, -842, -982,
  145, 1554, 1242,
  623, 1448, 656,
  349, 1016, 1482,
  31, -280, 415,
  -316, 724, 1641,
  360, 1058, 556,
  -436, -358, 1201,
  -355, 1123, 1939,
  401, 1584, 2248,
  -527, -1012, 355,
  233, 238, 2233,
  -550, -897, -639,
  -365, -501, 1957,
  389, 1860, 1621,
  162, 1132, 1264,
  -237, 1174, 1390,
  -640, -411, 116,
  -228, 1694, 2298,
  1639, 2186, 2267,
  562, 1273, 2658,
  323, 338, 1774,
  578, 1107, 852,
  22, 594, 934,
  -143, 718, 446
};


/* second codebook from IS641 */

static Word16 dico2_lsf[] = {
  50, 71, -9,
  -338, -698, -1407,
  102, -138, -820,
  -310, -469, -1147,
  414, 67, -267,
  1060, 814, 1441,
  1548, 1360, 1272,
  1754, 1895, 1661,
  2019, 2133, 1820,
  1808, 2318, 1845,
  644, -93, 454,
  858, 329, -136,
  489, -258, -128,
  -198, -745, -41,
  -52, -265, -985,
  346, 137, 479,
  -1741, -748, -684,
  -1163, -1725, -367,
  -895, -1145, -784,
  -488, -946, -968,
  -85, -390, -725,
  215, -340, -171,
  1020, 916, 1969,
  564, 179, 746,
  662, 977, 1734,
  887, 622, 914,
  939, 856, 1165,
  309, 688, 803,
  917, 161, 570,
  118, -20, -283,
  -816, -42, 204,
  -1228, -325, -462,
  -963, -202, -143,
  -988, -484, -361,
  -702, -978, -477,
  -302, -790, -1188,
  -100, -786, -1088,
  -1054, -947, -1684,
  -202, -843, -782,
  -1039, -1378, -901,
  -624, -110, -85,
  356, 213, -10,
  -493, 364, 774,
  425, 822, 479,
  -83, 557, 520,
  -992, -1560, -572,
  -603, -741, -26,
  -502, -638, -903,
  209, 306, 147,
  -316, -593, -596,
  -85, -211, -225,
  -918, -529, 117,
  233, -439, -738,
  1101, 751, 633,
  1457, 1716, 1511,
  1765, 1457, 910,
  1122, 1156, 849,
  1354, 868, 470,
  -871, -1150, -1796,
  -871, -861, -992,
  -118, 155, 212,
  -1051, -849, -606,
  -1117, -1849, -2750,
  -1019, -1427, -1869,
  370, -184, -414,
  959, 493, 104,
  958, 1039, 543,
  154, 653, 201,
  1249, 507, 150,
  663, 503, 230,
  623, 777, 675,
  659, 88, -110,
  843, 244, 224,
  382, 541, 302,
  724, 433, 666,
  1166, 734, 341,
  -138, 20, -397,
  -1183, -424, -46,
  -321, -352, -124,
  1333, 1021, 1080,
  262, 366, 723,
  922, 283, -551,
  31, -636, -611,
  -689, -697, -415,
  -952, -779, -201,
  -1329, -598, -359,
  -953, -1285, 166,
  493, 305, 221,
  846, 703, 610,
  840, 936, 774,
  -723, -1324, -1261,
  -357, -1025, -1388,
  -1096, -1376, -365,
  -1416, -1881, -608,
  -1798, -1727, -674,
  -545, -1173, -703,
  678, 786, 148,
  -123, 696, 1288,
  644, 350, -10,
  414, 614, 15,
  137, 344, -211,
  -814, -1512, -819,
  -391, -930, -588,
  47, -591, -898,
  -909, -1097, -163,
  -1272, -1167, -157,
  -1464, -1525, -389,
  -1274, -1188, -624,
  671, 213, 454,
  124, -274, -525,
  -729, -496, -152,
  -1344, 122, 135,
  -2905, -589, -394,
  -1728, 441, -50,
  1476, 904, 787,
  316, 236, -440,
  -347, 217, 413,
  -911, -917, 121,
  -455, -932, 202,
  -92, -465, -375,
  488, 390, 474,
  876, 729, 316,
  -1815, -1312, -669,
  87, 962, 432,
  563, -249, -1058,
  250, 285, 1105,
  1141, 427, 696,
  -1038, -1664, -1582,
  -948, 346, 160,
  -309, -272, -858,
  670, 624, 1250,
  -944, -408, -666,
  -606, -320, -384,
  -492, 230, 65,
  334, -50, -16,
  -16, -690, -1397,
  1791, 1716, 1399,
  2478, 2063, 1404,
  1245, 1471, 1426,
  -382, -1037, -2,
  173, -398, 1145,
  1491, 2024, 1801,
  772, 1274, 1506,
  1429, 1735, 2001,
  1079, 1218, 1273,
  -1154, -1851, -1329,
  -808, -1133, -1096,
  -451, -1033, -1722,
  65, 578, -84,
  -1476, -2434, -1778,
  -765, -1366, -494,
  -218, -594, -931,
  337, -236, 562,
  2357, 2662, 1938,
  1489, 1276, 874,
  189, 358, 374,
  -1519, -2281, -2346,
  -967, -1271, -2095,
  -628, -1188, -1542,
  1661, 1043, 546,
  565, 1061, 732,
  -64, -836, -434,
  -436, -96, 203,
  1078, 1216, 1636,
  907, 1534, 986,
  326, 965, 845,
  142, -84, 197,
  470, 2379, 1570,
  1133, 470, 1214,
  395, 1376, 1200,
  1125, 1042, 348,
  -543, -1234, -376,
  -215, -181, 481,
  -1947, -1621, -210,
  -750, -1185, 390,
  29, -399, 27,
  820, 1236, 755,
  695, 979, 409,
  -174, 1197, 1035,
  912, 1356, 1846,
  -992, -1437, 484,
  -1485, -1700, 208,
  -412, 1204, 1432,
  -271, 896, 1144,
  -416, 1777, 1434,
  -1696, -2644, -204,
  -1789, -1551, 1033,
  -1656, -1559, 1303,