1 /* Copyright (C) 2006 Jean-Marc Valin 2 File: window.c 3 4 Redistribution and use in source and binary forms, with or without 5 modification, are permitted provided that the following conditions 6 are met: 7 8 - Redistributions of source code must retain the above copyright 9 notice, this list of conditions and the following disclaimer. 10 11 - Redistributions in binary form must reproduce the above copyright 12 notice, this list of conditions and the following disclaimer in the 13 documentation and/or other materials provided with the distribution. 14 15 - Neither the name of the Xiph.org Foundation nor the names of its 16 contributors may be used to endorse or promote products derived from 17 this software without specific prior written permission. 18 19 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR 23 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 24 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 25 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 26 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 27 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 28 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 29 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifdef HAVE_CONFIG_H 33 #include "config.h" 34 #endif 35 36 #include "arch.h" 37 38 #ifdef FIXED_POINT 39 const spx_word16_t lag_window[11] = { 40 16384, 16337, 16199, 15970, 15656, 15260, 14790, 14254, 13659, 13015, 12330 41 }; 42 43 const spx_word16_t lpc_window[200] = { 44 1310, 1313, 1321, 1333, 1352, 1375, 1403, 1436, 45 1475, 1518, 1567, 1621, 1679, 1743, 1811, 1884, 46 1962, 2044, 2132, 2224, 2320, 2421, 2526, 2636, 47 2750, 2868, 2990, 3116, 3246, 3380, 3518, 3659, 48 3804, 3952, 4104, 4259, 4417, 4578, 4742, 4909, 49 5079, 5251, 5425, 5602, 5781, 5963, 6146, 6331, 50 6518, 6706, 6896, 7087, 7280, 7473, 7668, 7863, 51 8059, 8256, 8452, 8650, 8847, 9044, 9241, 9438, 52 9635, 9831, 10026, 10220, 10414, 10606, 10797, 10987, 53 11176, 11363, 11548, 11731, 11912, 12091, 12268, 12443, 54 12615, 12785, 12952, 13116, 13277, 13435, 13590, 13742, 55 13890, 14035, 14176, 14314, 14448, 14578, 14704, 14826, 56 14944, 15058, 15168, 15273, 15374, 15470, 15562, 15649, 57 15732, 15810, 15883, 15951, 16015, 16073, 16127, 16175, 58 16219, 16257, 16291, 16319, 16342, 16360, 16373, 16381, 59 16384, 16384, 16384, 16384, 16384, 16384, 16384, 16384, 60 16384, 16384, 16384, 16384, 16384, 16384, 16384, 16384, 61 16384, 16384, 16384, 16384, 16384, 16384, 16384, 16384, 62 16384, 16384, 16384, 16384, 16384, 16384, 16384, 16384, 63 16384, 16384, 16384, 16384, 16384, 16384, 16384, 16384, 64 16384, 16384, 16384, 16384, 16384, 16384, 16384, 16384, 65 16384, 16384, 16384, 16361, 16294, 16183, 16028, 15830, 66 15588, 15304, 14979, 14613, 14207, 13763, 13282, 12766, 67 12215, 11631, 11016, 10373, 9702, 9007, 8289, 7551, 68 6797, 6028, 5251, 4470, 3695, 2943, 2248, 1696 69 }; 70 #else 71 const spx_word16_t lag_window[11] = { 72 1.00000, 0.99716, 0.98869, 0.97474, 0.95554, 0.93140, 0.90273, 0.86998, 0.83367, 0.79434, 0.75258 73 }; 74 75 const spx_word16_t lpc_window[200] = { 76 0.080000f, 0.080158f, 0.080630f, 0.081418f, 0.082520f, 0.083935f, 0.085663f, 0.087703f, 77 0.090052f, 0.092710f, 0.095674f, 0.098943f, 0.102514f, 0.106385f, 0.110553f, 0.115015f, 78 0.119769f, 0.124811f, 0.130137f, 0.135744f, 0.141628f, 0.147786f, 0.154212f, 0.160902f, 79 0.167852f, 0.175057f, 0.182513f, 0.190213f, 0.198153f, 0.206328f, 0.214731f, 0.223357f, 80 0.232200f, 0.241254f, 0.250513f, 0.259970f, 0.269619f, 0.279453f, 0.289466f, 0.299651f, 81 0.310000f, 0.320507f, 0.331164f, 0.341965f, 0.352901f, 0.363966f, 0.375151f, 0.386449f, 82 0.397852f, 0.409353f, 0.420943f, 0.432615f, 0.444361f, 0.456172f, 0.468040f, 0.479958f, 83 0.491917f, 0.503909f, 0.515925f, 0.527959f, 0.540000f, 0.552041f, 0.564075f, 0.576091f, 84 0.588083f, 0.600042f, 0.611960f, 0.623828f, 0.635639f, 0.647385f, 0.659057f, 0.670647f, 85 0.682148f, 0.693551f, 0.704849f, 0.716034f, 0.727099f, 0.738035f, 0.748836f, 0.759493f, 86 0.770000f, 0.780349f, 0.790534f, 0.800547f, 0.810381f, 0.820030f, 0.829487f, 0.838746f, 87 0.847800f, 0.856643f, 0.865269f, 0.873672f, 0.881847f, 0.889787f, 0.897487f, 0.904943f, 88 0.912148f, 0.919098f, 0.925788f, 0.932214f, 0.938372f, 0.944256f, 0.949863f, 0.955189f, 89 0.960231f, 0.964985f, 0.969447f, 0.973615f, 0.977486f, 0.981057f, 0.984326f, 0.987290f, 90 0.989948f, 0.992297f, 0.994337f, 0.996065f, 0.997480f, 0.998582f, 0.999370f, 0.999842f, 91 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 92 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 93 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 94 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 95 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 96 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 97 1.000000f, 1.000000f, 1.000000f, 0.998640f, 0.994566f, 0.987787f, 0.978324f, 0.966203f, 98 0.951458f, 0.934131f, 0.914270f, 0.891931f, 0.867179f, 0.840084f, 0.810723f, 0.779182f, 99 0.745551f, 0.709930f, 0.672424f, 0.633148f, 0.592223f, 0.549781f, 0.505964f, 0.460932f, 100 0.414863f, 0.367968f, 0.320511f, 0.272858f, 0.225569f, 0.179655f, 0.137254f, 0.103524f 101 }; 102 #endif 103