1 /*
2  *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
3  *
4  *  Use of this source code is governed by a BSD-style license
5  *  that can be found in the LICENSE file in the root of the source
6  *  tree. An additional intellectual property rights grant can be found
7  *  in the file PATENTS.  All contributing project authors may
8  *  be found in the AUTHORS file in the root of the source tree.
9  */
10 
11 /* filterbank_tables.c*/
12 /* This file contains variables that are used in filterbanks.c*/
13 
14 #include "filterbank_tables.h"
15 #include "settings.h"
16 
17 /* The composite all-pass filter factors */
18 const float WebRtcIsac_kCompositeApFactorsFloat[4] = {
19  0.03470000000000f,  0.15440000000000f,  0.38260000000000f,  0.74400000000000f};
20 
21 /* The upper channel all-pass filter factors */
22 const float WebRtcIsac_kUpperApFactorsFloat[2] = {
23  0.03470000000000f,  0.38260000000000f};
24 
25 /* The lower channel all-pass filter factors */
26 const float WebRtcIsac_kLowerApFactorsFloat[2] = {
27  0.15440000000000f,  0.74400000000000f};
28 
29 /* The matrix for transforming the backward composite state to upper channel state */
30 const float WebRtcIsac_kTransform1Float[8] = {
31   -0.00158678506084f,  0.00127157815343f, -0.00104805672709f,  0.00084837248079f,
32   0.00134467983258f, -0.00107756549387f,  0.00088814793277f, -0.00071893072525f};
33 
34 /* The matrix for transforming the backward composite state to lower channel state */
35 const float WebRtcIsac_kTransform2Float[8] = {
36  -0.00170686041697f,  0.00136780109829f, -0.00112736532350f,  0.00091257055385f,
37   0.00103094281812f, -0.00082615076557f,  0.00068092756088f, -0.00055119165484f};
38