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 Pathname: .audio/gsm-amr/c/src/lag_wind_tab.c 33 34 Date: 01/29/2002 35 36 ------------------------------------------------------------------------------ 37 REVISION HISTORY 38 39 Description: Added #ifdef __cplusplus and removed "extern" from table 40 definition. Removed corresponding header file from Include 41 section. 42 43 Description: Put "extern" back. 44 45 Description: 46 47 ------------------------------------------------------------------------------ 48 INPUT AND OUTPUT DEFINITIONS 49 50 Inputs: 51 None 52 53 Local Stores/Buffers/Pointers Needed: 54 None 55 56 Global Stores/Buffers/Pointers Needed: 57 None 58 59 Outputs: 60 None 61 62 Pointers and Buffers Modified: 63 None 64 65 Local Stores Modified: 66 None 67 68 Global Stores Modified: 69 None 70 71 ------------------------------------------------------------------------------ 72 FUNCTION DESCRIPTION 73 74 File : lag_wind.tab 75 Purpose : Table of lag_window for autocorrelation. 76 77 *-----------------------------------------------------* 78 | Table of lag_window for autocorrelation. | 79 | | 80 | noise floor = 1.0001 = (0.9999 on r[1] ..r[10]) | 81 | Bandwitdh expansion = 60 Hz | 82 | | 83 | | 84 | lag_wind[0] = 1.00000000 (not stored) | 85 | lag_wind[1] = 0.99879038 | 86 | lag_wind[2] = 0.99546897 | 87 | lag_wind[3] = 0.98995781 | 88 | lag_wind[4] = 0.98229337 | 89 | lag_wind[5] = 0.97252619 | 90 | lag_wind[6] = 0.96072036 | 91 | lag_wind[7] = 0.94695264 | 92 | lag_wind[8] = 0.93131179 | 93 | lag_wind[9] = 0.91389757 | 94 | lag_wind[10]= 0.89481968 | 95 ------------------------------------------------------- 96 97 ------------------------------------------------------------------------------ 98 REQUIREMENTS 99 100 None 101 102 ------------------------------------------------------------------------------ 103 REFERENCES 104 105 None 106 107 ------------------------------------------------------------------------------ 108 PSEUDO-CODE 109 110 111 ------------------------------------------------------------------------------ 112 RESOURCES USED 113 When the code is written for a specific target processor the 114 the resources used should be documented below. 115 116 STACK USAGE: [stack count for this module] + [variable to represent 117 stack usage for each subroutine called] 118 119 where: [stack usage variable] = stack usage for [subroutine 120 name] (see [filename].ext) 121 122 DATA MEMORY USED: x words 123 124 PROGRAM MEMORY USED: x words 125 126 CLOCK CYCLES: [cycle count equation for this module] + [variable 127 used to represent cycle count for each subroutine 128 called] 129 130 where: [cycle count variable] = cycle count for [subroutine 131 name] (see [filename].ext) 132 133 ------------------------------------------------------------------------------ 134 */ 135 136 137 /*---------------------------------------------------------------------------- 138 ; INCLUDES 139 ----------------------------------------------------------------------------*/ 140 #include "typedef.h" 141 #include "lag_wind_tab.h" 142 143 /*--------------------------------------------------------------------------*/ 144 #ifdef __cplusplus 145 extern "C" 146 { 147 #endif 148 149 /*---------------------------------------------------------------------------- 150 ; MACROS 151 ; Define module specific macros here 152 ----------------------------------------------------------------------------*/ 153 154 155 /*---------------------------------------------------------------------------- 156 ; DEFINES 157 ; Include all pre-processor statements here. Include conditional 158 ; compile variables also. 159 ----------------------------------------------------------------------------*/ 160 161 /*---------------------------------------------------------------------------- 162 ; LOCAL FUNCTION DEFINITIONS 163 ; Function Prototype declaration 164 ----------------------------------------------------------------------------*/ 165 166 167 /*---------------------------------------------------------------------------- 168 ; LOCAL STORE/BUFFER/POINTER DEFINITIONS 169 ; Variable declaration - defined here and used outside this module 170 ----------------------------------------------------------------------------*/ 171 const Word16 lag_h[10] = 172 { 173 32728, 174 32619, 175 32438, 176 32187, 177 31867, 178 31480, 179 31029, 180 30517, 181 29946, 182 29321 183 }; 184 185 const Word16 lag_l[10] = 186 { 187 11904, 188 17280, 189 30720, 190 25856, 191 24192, 192 28992, 193 24384, 194 7360, 195 19520, 196 14784 197 }; 198 199 /*---------------------------------------------------------------------------- 200 ; EXTERNAL FUNCTION REFERENCES 201 ; Declare functions defined elsewhere and referenced in this module 202 ----------------------------------------------------------------------------*/ 203 204 205 /*---------------------------------------------------------------------------- 206 ; EXTERNAL GLOBAL STORE/BUFFER/POINTER REFERENCES 207 ; Declare variables used in this module but defined elsewhere 208 ----------------------------------------------------------------------------*/ 209 210 211 /*--------------------------------------------------------------------------*/ 212 #ifdef __cplusplus 213 } 214 #endif 215 216 /*---------------------------------------------------------------------------- 217 ; FUNCTION CODE 218 ----------------------------------------------------------------------------*/ 219 220 /*---------------------------------------------------------------------------- 221 ; Define all local variables 222 ----------------------------------------------------------------------------*/ 223 224 225 /*---------------------------------------------------------------------------- 226 ; Function body here 227 ----------------------------------------------------------------------------*/ 228 229 230 /*---------------------------------------------------------------------------- 231 ; Return nothing or data or data pointer 232 ----------------------------------------------------------------------------*/ 233 234
