lag_wind.tab

arm音频编解码库

/*
********************************************************************************
*
*      GSM AMR-NB speech codec   R98   Version 7.6.0   December 12, 2001
*                                R99   Version 3.3.0                
*                                REL-4 Version 4.1.0                
*
********************************************************************************
*
*      File             : lag_wind.tab
*      Purpose          : Table of lag_window for autocorrelation.
*      $Id $
*
********************************************************************************
*/
/*-----------------------------------------------------*
 | Table of lag_window for autocorrelation.            |
 |                                                     |
 | noise floor = 1.0001   = (0.9999  on r[1] ..r[10])  |
 | Bandwitdh expansion = 60 Hz                         |
 |                                                     |
 |                                                     |
 | lag_wind[0] =  1.00000000    (not stored)           |
 | lag_wind[1] =  0.99879038                           |
 | lag_wind[2] =  0.99546897                           |
 | lag_wind[3] =  0.98995781                           |
 | lag_wind[4] =  0.98229337                           |
 | lag_wind[5] =  0.97252619                           |
 | lag_wind[6] =  0.96072036                           |
 | lag_wind[7] =  0.94695264                           |
 | lag_wind[8] =  0.93131179                           |
 | lag_wind[9] =  0.91389757                           |
 | lag_wind[10]=  0.89481968                           |
 -----------------------------------------------------*/

static const Word16 lag_h[10] =
{
    32728,
    32619,
    32438,
    32187,
    31867,
    31480,
    31029,
    30517,
    29946,
    29321
};

static const Word16 lag_l[10] =
{
    11904,
    17280,
    30720,
    25856,
    24192,
    28992,
    24384,
    7360,
    19520,
    14784
};