1 /* 2 ** Copyright 2003-2010, VisualOn, Inc. 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 express or implied. 13 ** See the License for the specific language governing permissions and 14 ** limitations under the License. 15 */ 16 17 18 /*-----------------------------------------------------* 19 | Table of lag_window for autocorrelation. | 20 | noise floor = 1.0001 = (0.9999 on r[1] ..r[16]) | 21 | Bandwidth expansion = 60 Hz | 22 | Sampling frequency = 12800 Hz | 23 | | 24 | Special double precision format. See "math_op.c" | 25 | | 26 | lag_wind[0] = 1.00000000 (not stored) | 27 | lag_wind[1] = 0.99946642 | 28 | lag_wind[2] = 0.99816680 | 29 | lag_wind[3] = 0.99600452 | 30 | lag_wind[4] = 0.99298513 | 31 | lag_wind[5] = 0.98911655 | 32 | lag_wind[6] = 0.98440880 | 33 | lag_wind[7] = 0.97887397 | 34 | lag_wind[8] = 0.97252619 | 35 | lag_wind[9] = 0.96538186 | 36 | lag_wind[10]= 0.95745903 | 37 | lag_wind[11]= 0.94877797 | 38 | lag_wind[12]= 0.93936038 | 39 | lag_wind[13]= 0.92922986 | 40 | lag_wind[14]= 0.91841155 | 41 | lag_wind[15]= 0.90693212 | 42 | lag_wind[16]= 0.89481968 | 43 ------------------------------------------------------*/ 44 45 #define M 16 46 47 static Word16 volag_h[M] = { 48 32750, 49 32707, 50 32637, 51 32538, 52 32411, 53 32257, 54 32075, 55 31867, 56 31633, 57 31374, 58 31089, 59 30780, 60 30449, 61 30094, 62 29718, 63 29321}; 64 65 static Word16 volag_l[M] = { 66 16896, 67 30464, 68 2496, 69 4480, 70 12160, 71 3520, 72 24320, 73 24192, 74 20736, 75 576, 76 18240, 77 31488, 78 128, 79 16704, 80 11520, 81 14784}; 82
