1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
/*
* This file includes the constant values used internally in VAD.
*/
#include "vad_const.h"
// Spectrum Weighting
const WebRtc_Word16 kSpectrumWeight[6] = {6, 8, 10, 12, 14, 16};
const WebRtc_Word16 kCompVar = 22005;
// Constant 160*log10(2) in Q9
const WebRtc_Word16 kLogConst = 24660;
// Constant log2(exp(1)) in Q12
const WebRtc_Word16 kLog10Const = 5909;
// Q15
const WebRtc_Word16 kNoiseUpdateConst = 655;
const WebRtc_Word16 kSpeechUpdateConst = 6554;
// Q8
const WebRtc_Word16 kBackEta = 154;
// Coefficients used by WebRtcVad_HpOutput, Q14
const WebRtc_Word16 kHpZeroCoefs[3] = {6631, -13262, 6631};
const WebRtc_Word16 kHpPoleCoefs[3] = {16384, -7756, 5620};
// Allpass filter coefficients, upper and lower, in Q15
// Upper: 0.64, Lower: 0.17
const WebRtc_Word16 kAllPassCoefsQ15[2] = {20972, 5571};
const WebRtc_Word16 kAllPassCoefsQ13[2] = {5243, 1392}; // Q13
// Minimum difference between the two models, Q5
const WebRtc_Word16 kMinimumDifference[6] = {544, 544, 576, 576, 576, 576};
// Upper limit of mean value for speech model, Q7
const WebRtc_Word16 kMaximumSpeech[6] = {11392, 11392, 11520, 11520, 11520, 11520};
// Minimum value for mean value
const WebRtc_Word16 kMinimumMean[2] = {640, 768};
// Upper limit of mean value for noise model, Q7
const WebRtc_Word16 kMaximumNoise[6] = {9216, 9088, 8960, 8832, 8704, 8576};
// Adjustment for division with two in WebRtcVad_SplitFilter
const WebRtc_Word16 kOffsetVector[6] = {368, 368, 272, 176, 176, 176};
// Start values for the Gaussian models, Q7
// Weights for the two Gaussians for the six channels (noise)
const WebRtc_Word16 kNoiseDataWeights[12] = {34, 62, 72, 66, 53, 25, 94, 66, 56, 62, 75, 103};
// Weights for the two Gaussians for the six channels (speech)
const WebRtc_Word16 kSpeechDataWeights[12] = {48, 82, 45, 87, 50, 47, 80, 46, 83, 41, 78, 81};
// Means for the two Gaussians for the six channels (noise)
const WebRtc_Word16 kNoiseDataMeans[12] = {6738, 4892, 7065, 6715, 6771, 3369, 7646, 3863,
7820, 7266, 5020, 4362};
// Means for the two Gaussians for the six channels (speech)
const WebRtc_Word16 kSpeechDataMeans[12] = {8306, 10085, 10078, 11823, 11843, 6309, 9473,
9571, 10879, 7581, 8180, 7483};
// Stds for the two Gaussians for the six channels (noise)
const WebRtc_Word16 kNoiseDataStds[12] = {378, 1064, 493, 582, 688, 593, 474, 697, 475, 688,
421, 455};
// Stds for the two Gaussians for the six channels (speech)
const WebRtc_Word16 kSpeechDataStds[12] = {555, 505, 567, 524, 585, 1231, 509, 828, 492, 1540,
1079, 850};
|
