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| 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, 0.833
67, 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 |
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