opencore/codecs_v2/audio/gsm_amr/amr_nb/enc/src/lag_wind_tab.cpp

   1 /* ------------------------------------------------------------------
   2  * Copyright (C) 1998-2009 PacketVideo
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
  13  * express or implied.
  14  * See the License for the specific language governing permissions
  15  * and limitations under the License.
  16  * -------------------------------------------------------------------
  17  */
  18 /****************************************************************************************
  19 Portions of this file are derived from the following 3GPP standard:
  20
  21     3GPP TS 26.073
  22     ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
  23     Available from http://www.3gpp.org
  24
  25 (C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
  26 Permission to distribute, modify and use this file under the standard license
  27 terms listed above has been obtained from the copyright holder.
  28 ****************************************************************************************/
  29 /*
  30 ------------------------------------------------------------------------------
  31
  32  Filename: lag_wind_tab.cpp
  33
  34 ------------------------------------------------------------------------------
  35  INPUT AND OUTPUT DEFINITIONS
  36
  37  Inputs:
  38     None
  39
  40  Local Stores/Buffers/Pointers Needed:
  41     None
  42
  43  Global Stores/Buffers/Pointers Needed:
  44     None
  45
  46  Outputs:
  47     None
  48
  49  Pointers and Buffers Modified:
  50     None
  51
  52  Local Stores Modified:
  53     None
  54
  55  Global Stores Modified:
  56     None
  57
  58 ------------------------------------------------------------------------------
  59  FUNCTION DESCRIPTION
  60
  61       File             : lag_wind.tab
  62       Purpose          : Table of lag_window for autocorrelation.
  63
  64  *-----------------------------------------------------*
  65  | Table of lag_window for autocorrelation.            |
  66  |                                                     |
  67  | noise floor = 1.0001   = (0.9999  on r[1] ..r[10])  |
  68  | Bandwitdh expansion = 60 Hz                         |
  69  |                                                     |
  70  |                                                     |
  71  | lag_wind[0] =  1.00000000    (not stored)           |
  72  | lag_wind[1] =  0.99879038                           |
  73  | lag_wind[2] =  0.99546897                           |
  74  | lag_wind[3] =  0.98995781                           |
  75  | lag_wind[4] =  0.98229337                           |
  76  | lag_wind[5] =  0.97252619                           |
  77  | lag_wind[6] =  0.96072036                           |
  78  | lag_wind[7] =  0.94695264                           |
  79  | lag_wind[8] =  0.93131179                           |
  80  | lag_wind[9] =  0.91389757                           |
  81  | lag_wind[10]=  0.89481968                           |
  82  -------------------------------------------------------
  83
  84 ------------------------------------------------------------------------------
  85  REQUIREMENTS
  86
  87  None
  88
  89 ------------------------------------------------------------------------------
  90  REFERENCES
  91
  92  None
  93
  94 ------------------------------------------------------------------------------
  95  PSEUDO-CODE
  96
  97
  98 ------------------------------------------------------------------------------
  99 */
 100
 101
 102 /*----------------------------------------------------------------------------
 103 ; INCLUDES
 104 ----------------------------------------------------------------------------*/
 105 #include "lag_wind_tab.h"
 106
 107 /*--------------------------------------------------------------------------*/
 108 #ifdef __cplusplus
 109 extern "C"
 110 {
 111 #endif
 112
 113     /*----------------------------------------------------------------------------
 114     ; MACROS
 115     ; Define module specific macros here
 116     ----------------------------------------------------------------------------*/
 117
 118
 119     /*----------------------------------------------------------------------------
 120     ; DEFINES
 121     ; Include all pre-processor statements here. Include conditional
 122     ; compile variables also.
 123     ----------------------------------------------------------------------------*/
 124
 125     /*----------------------------------------------------------------------------
 126     ; LOCAL FUNCTION DEFINITIONS
 127     ; Function Prototype declaration
 128     ----------------------------------------------------------------------------*/
 129
 130
 131     /*----------------------------------------------------------------------------
 132     ; LOCAL STORE/BUFFER/POINTER DEFINITIONS
 133     ; Variable declaration - defined here and used outside this module
 134     ----------------------------------------------------------------------------*/
 135     const Word16 lag_h[10] =
 136     {
 137         32728,
 138         32619,
 139         32438,
 140         32187,
 141         31867,
 142         31480,
 143         31029,
 144         30517,
 145         29946,
 146         29321
 147     };
 148
 149     const Word16 lag_l[10] =
 150     {
 151         11904,
 152         17280,
 153         30720,
 154         25856,
 155         24192,
 156         28992,
 157         24384,
 158         7360,
 159         19520,
 160         14784
 161     };
 162
 163     /*----------------------------------------------------------------------------
 164     ; EXTERNAL FUNCTION REFERENCES
 165     ; Declare functions defined elsewhere and referenced in this module
 166     ----------------------------------------------------------------------------*/
 167
 168
 169     /*----------------------------------------------------------------------------
 170     ; EXTERNAL GLOBAL STORE/BUFFER/POINTER REFERENCES
 171     ; Declare variables used in this module but defined elsewhere
 172     ----------------------------------------------------------------------------*/
 173
 174
 175     /*--------------------------------------------------------------------------*/
 176 #ifdef __cplusplus
 177 }
 178 #endif
 179
 180 /*----------------------------------------------------------------------------
 181 ; FUNCTION CODE
 182 ----------------------------------------------------------------------------*/
 183
 184 /*----------------------------------------------------------------------------
 185 ; Define all local variables
 186 ----------------------------------------------------------------------------*/
 187
 188
 189 /*----------------------------------------------------------------------------
 190 ; Function body here
 191 ----------------------------------------------------------------------------*/
 192
 193
 194 /*----------------------------------------------------------------------------
 195 ; Return nothing or data or data pointer
 196 ----------------------------------------------------------------------------*/
 197