alaw.h

speech signal process tools

#ifndef _ALAW_H_
#define _ALAW_H_

static short int alaw2linear_10_sbf_lut[256] = 
{
   -5504,  -5248,  -6016,  -5760,  -4480,  -4224,  -4992,  -4736,
   -7552,  -7296,  -8064,  -7808,  -6528,  -6272,  -7040,  -6784,
   -2752,  -2624,  -3008,  -2880,  -2240,  -2112,  -2496,  -2368,
   -3776,  -3648,  -4032,  -3904,  -3264,  -3136,  -3520,  -3392,
  -22016, -20992, -24064, -23040, -17920, -16896, -19968, -18944,
  -30208, -29184, -32256, -31232, -26112, -25088, -28160, -27136,
  -11008, -10496, -12032, -11520,  -8960,  -8448,  -9984,  -9472,
  -15104, -14592, -16128, -15616, -13056, -12544, -14080, -13568,
    -344,   -328,   -376,   -360,   -280,   -264,   -312,   -296,
    -472,   -456,   -504,   -488,   -408,   -392,   -440,   -424,
     -88,    -72,   -120,   -104,    -24,     -8,    -56,    -40,
    -216,   -200,   -248,   -232,   -152,   -136,   -184,   -168,
   -1376,  -1312,  -1504,  -1440,  -1120,  -1056,  -1248,  -1184,
   -1888,  -1824,  -2016,  -1952,  -1632,  -1568,  -1760,  -1696,
    -688,   -656,   -752,   -720,   -560,   -528,   -624,   -592,
    -944,   -912,  -1008,   -976,   -816,   -784,   -880,   -848,
    5504,   5248,   6016,   5760,   4480,   4224,   4992,   4736,
    7552,   7296,   8064,   7808,   6528,   6272,   7040,   6784,
    2752,   2624,   3008,   2880,   2240,   2112,   2496,   2368,
    3776,   3648,   4032,   3904,   3264,   3136,   3520,   3392,
   22016,  20992,  24064,  23040,  17920,  16896,  19968,  18944,
   30208,  29184,  32256,  31232,  26112,  25088,  28160,  27136,
   11008,  10496,  12032,  11520,   8960,   8448,   9984,   9472,
   15104,  14592,  16128,  15616,  13056,  12544,  14080,  13568,
     344,    328,    376,    360,    280,    264,    312,    296,
     472,    456,    504,    488,    408,    392,    440,    424,
      88,     72,    120,    104,     24,      8,     56,     40,
     216,    200,    248,    232,    152,    136,    184,    168,
    1376,   1312,   1504,   1440,   1120,   1056,   1248,   1184,
    1888,   1824,   2016,   1952,   1632,   1568,   1760,   1696,
     688,    656,    752,    720,    560,    528,    624,    592,
     944,    912,   1008,    976,    816,    784,    880,    848
};

static short int alaw2linear_01_sbf_lut[256] = 
{
  -32534, -32533, -32536, -32535, -32530, -32529, -32532, -32531,
  -32542, -32541, -32544, -32543, -32538, -32537, -32540, -32539,
   16629, -16139,  16628, -16140,  16631, -16137,  16630, -16138,
   16625, -16143,  16624, -16144,  16627, -16141,  16626, -16142,
     170,    174,    162,    166,    186,    190,    178,    182,
     138,    142,    130,    134,    154,    158,    146,    150,
     213,    215,    209,    211,    221,    223,    217,    219,
     197,    199,    193,    195,    205,    207,    201,    203,
  -22274, -18178, -30466, -26370,  -5890,  -1794, -14082,  -9986,
   10494,  14590,   2302,   6398,  26878,  30974,  18686,  22782,
  -22273, -18177, -30465, -26369,  -5889,  -1793, -14081,  -9985,
   10495,  14591,   2303,   6399,  26879,  30975,  18687,  22783,
  -24326,  -7942,   8442,  24826, -24325,  -7941,   8443,  24827,
  -24328,  -7944,   8440,  24824, -24327,  -7943,   8441,  24825,
   20733,  28925,   4349,  12541, -12035,  -3843, -28419, -20227,
   20732,  28924,   4348,  12540, -12036,  -3844, -28420, -20228,
  -32747, -32748, -32745, -32746, -32751, -32752, -32749, -32750,
  -32739, -32740, -32737, -32738, -32743, -32744, -32741, -32742,
  -16374,  16394, -16373,  16395, -16376,  16392, -16375,  16393,
  -16370,  16398, -16369,  16399, -16372,  16396, -16371,  16397,
      86,     82,     94,     90,     70,     66,     78,     74,
     118,    114,    126,    122,    102,     98,    110,    106,
      43,     41,     47,     45,     35,     33,     39,     37,
      59,     57,     63,     61,     51,     49,     55,     53,
   22529,  18433,  30721,  26625,   6145,   2049,  14337,  10241,
  -10239, -14335,  -2047,  -6143, -26623, -30719, -18431, -22527,
   22528,  18432,  30720,  26624,   6144,   2048,  14336,  10240,
  -10240, -14336,  -2048,  -6144, -26624, -30720, -18432, -22528,
   24581,   8197,  -8187, -24571,  24580,   8196,  -8188, -24572,
   24583,   8199,  -8185, -24569,  24582,   8198,  -8186, -24570,
  -20478, -28670,  -4094, -12286,  12290,   4098,  28674,  20482,
  -20477, -28669,  -4093, -12285,  12291,   4099,  28675,  20483
};

#endif