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