1/* 2 * alias_1k.dat -- Anti-alias filter 1000 Hz bandwidth 3 * 4 * Copyright (C) 1999-2004 Pawel Jalocha, SP9VRC 5 * 6 * This file is part of fldigi. 7 * 8 * Fldigi is free software: you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation, either version 3 of the License, or 11 * (at your option) any later version. 12 * 13 * Fldigi is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with fldigi. If not, see <http://www.gnu.org/licenses/>. 20 * 21 */ 22 23// Filter coefficiants made by ALIAS.C for the following parameters: 24// FilterLen=64 SampleRate=8000.0 FreqLow=500.0 FreqUpp=1500.0 25// PassBandLow=375.0 PassBandUpp=1625.0 StopBandLow=0.0 StopBandUpp=2000.0 26// => PeakInStopBand=-90.99 dB 27// Programmers's scale factor: 2.000000 28// Programmers's comments: Anti-alias filter 1000 Hz bandwidth, decimation by 4 29 30const int Alias_1k_Len=64; 31 32double Alias_1k_I[Alias_1k_Len] = { 33 +0.00003605 , // 0 34 +0.00001835 , // 1 35 -0.00022227 , // 2 36 -0.00079785 , // 3 37 -0.00099442 , // 4 38 +0.00032296 , // 5 39 +0.00276603 , // 6 40 +0.00365685 , // 7 41 +0.00128973 , // 8 42 -0.00107943 , // 9 43 +0.00195568 , // 10 44 +0.00914871 , // 11 45 +0.01100689 , // 12 46 +0.00254789 , // 13 47 -0.00580382 , // 14 48 -0.00014844 , // 15 49 +0.01341757 , // 16 50 +0.01123057 , // 17 51 -0.01328109 , // 18 52 -0.03176715 , // 19 53 -0.01791993 , // 20 54 +0.00579429 , // 21 55 -0.00986091 , // 22 56 -0.06425601 , // 23 57 -0.08967807 , // 24 58 -0.04429128 , // 25 59 +0.00513920 , // 26 60 -0.04459511 , // 27 61 -0.16886923 , // 28 62 -0.19065374 , // 29 63 +0.01930718 , // 30 64 +0.34486939 , // 31 65 +0.50345887 , // 32 66 +0.34486939 , // 33 67 +0.01930718 , // 34 68 -0.19065374 , // 35 69 -0.16886923 , // 36 70 -0.04459511 , // 37 71 +0.00513920 , // 38 72 -0.04429128 , // 39 73 -0.08967807 , // 40 74 -0.06425601 , // 41 75 -0.00986091 , // 42 76 +0.00579429 , // 43 77 -0.01791993 , // 44 78 -0.03176715 , // 45 79 -0.01328109 , // 46 80 +0.01123057 , // 47 81 +0.01341757 , // 48 82 -0.00014844 , // 49 83 -0.00580382 , // 50 84 +0.00254789 , // 51 85 +0.01100689 , // 52 86 +0.00914871 , // 53 87 +0.00195568 , // 54 88 -0.00107943 , // 55 89 +0.00128973 , // 56 90 +0.00365685 , // 57 91 +0.00276603 , // 58 92 +0.00032296 , // 59 93 -0.00099442 , // 60 94 -0.00079785 , // 61 95 -0.00022227 , // 62 96 +0.00001835 // 63 97} ; 98 99double Alias_1k_Q[Alias_1k_Len] = { 100 -0.00000000 , // 0 101 -0.00009527 , // 1 102 -0.00023082 , // 2 103 +0.00005162 , // 3 104 +0.00123007 , // 4 105 +0.00255193 , // 5 106 +0.00207549 , // 6 107 -0.00064302 , // 7 108 -0.00244045 , // 8 109 +0.00005205 , // 9 110 +0.00410793 , // 10 111 +0.00211830 , // 11 112 -0.00729235 , // 12 113 -0.01359800 , // 13 114 -0.00757272 , // 14 115 +0.00172023 , // 15 116 -0.00460378 , // 16 117 -0.02559228 , // 17 118 -0.03408530 , // 18 119 -0.01416468 , // 19 120 +0.00731461 , // 20 121 -0.00712536 , // 21 122 -0.04328548 , // 22 123 -0.04099291 , // 23 124 +0.01821691 , // 24 125 +0.06428190 , // 25 126 +0.02790538 , // 26 127 -0.03602086 , // 27 128 +0.01583703 , // 28 129 +0.22015579 , // 29 130 +0.40003327 , // 30 131 +0.32856209 , // 31 132 -0.00000000 , // 32 133 -0.32856209 , // 33 134 -0.40003327 , // 34 135 -0.22015579 , // 35 136 -0.01583703 , // 36 137 +0.03602086 , // 37 138 -0.02790538 , // 38 139 -0.06428190 , // 39 140 -0.01821691 , // 40 141 +0.04099291 , // 41 142 +0.04328548 , // 42 143 +0.00712536 , // 43 144 -0.00731461 , // 44 145 +0.01416468 , // 45 146 +0.03408530 , // 46 147 +0.02559228 , // 47 148 +0.00460378 , // 48 149 -0.00172023 , // 49 150 +0.00757272 , // 50 151 +0.01359800 , // 51 152 +0.00729235 , // 52 153 -0.00211830 , // 53 154 -0.00410793 , // 54 155 -0.00005205 , // 55 156 +0.00244045 , // 56 157 +0.00064302 , // 57 158 -0.00207549 , // 58 159 -0.00255193 , // 59 160 -0.00123007 , // 60 161 -0.00005162 , // 61 162 +0.00023082 , // 62 163 +0.00009527 // 63 164} ; 165 166