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
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
/*---------------------------------------------------------------------------*\
FILE........: quantise.h
AUTHOR......: David Rowe
DATE CREATED: 31/5/92
Quantisation functions for the sinusoidal coder.
\*---------------------------------------------------------------------------*/
/*
All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License version 2.1, as
published by the Free Software Foundation. This program is
distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __QUANTISE__
#define __QUANTISE__
#include "codec2_fft.h"
#include "comp.h"
#define WO_BITS 7
#define WO_LEVELS (1<<WO_BITS)
#define WO_DT_BITS 3
#define E_BITS 5
#define E_LEVELS (1<<E_BITS)
#define E_MIN_DB -10.0
#define E_MAX_DB 40.0
#define LSP_SCALAR_INDEXES 10
#define LSPD_SCALAR_INDEXES 10
#define LSP_PRED_VQ_INDEXES 3
#define LSP_DIFF_FREQ_INDEXES 5
#define LSP_DIFF_TIME_BITS 7
#define LSPDT_ALL 0
#define LSPDT_LOW 1
#define LSPDT_HIGH 2
#define WO_E_BITS 8
#define LPCPF_GAMMA 0.5
#define LPCPF_BETA 0.2
void quantise_init();
float lpc_model_amplitudes(float Sn[], float w[], MODEL *model, int order,
int lsp,float ak[]);
void aks_to_M2(codec2_fftr_cfg fftr_fwd_cfg, float ak[], int order, MODEL *model,
float E, float *snr, int dump, int sim_pf,
int pf, int bass_boost, float beta, float gamma, COMP Aw[]);
int encode_Wo(C2CONST *c2const, float Wo, int bits);
float decode_Wo(C2CONST *c2const, int index, int bits);
int encode_log_Wo(C2CONST *c2const, float Wo, int bits);
float decode_log_Wo(C2CONST *c2const, int index, int bits);
#if 0
int encode_Wo_dt(C2CONST *c2const, float Wo, float prev_Wo);
float decode_Wo_dt(C2CONST *c2const, int index, float prev_Wo);
#endif
void encode_lsps_scalar(int indexes[], float lsp[], int order);
void decode_lsps_scalar(float lsp[], int indexes[], int order);
void encode_lspds_scalar(int indexes[], float lsp[], int order);
void decode_lspds_scalar(float lsp[], int indexes[], int order);
void encode_lsps_diff_freq_vq(int indexes[], float lsp[], int order);
void decode_lsps_diff_freq_vq(float lsp_[], int indexes[], int order);
void encode_lsps_diff_time(int indexes[],
float lsp[],
float lsp__prev[],
int order);
void decode_lsps_diff_time(float lsp_[],
int indexes[],
float lsp__prev[],
int order);
void encode_lsps_vq(int *indexes, float *x, float *xq, int order);
void decode_lsps_vq(int *indexes, float *xq, int order, int stages);
long quantise(const float * cb, float vec[], float w[], int k, int m, float *se);
void lspvq_quantise(float lsp[], float lsp_[], int order);
void lspjnd_quantise(float lsp[], float lsp_[], int order);
void lspdt_quantise(float lsps[], float lsps_[], float lsps__prev[], int mode);
void lspjvm_quantise(float lsps[], float lsps_[], int order);
void lspanssi_quantise(float lsps[], float lsps_[], int order, int mbest_entries);
float lspmelvq_quantise(float *x, float *xq, int order);
float lspmelvq_mbest_encode(int *indexes, float *x, float *xq, int ndim, int mbest_entries);
void lspmelvq_decode(int *indexes, float *xq, int ndim);
void encode_mels_scalar(int mel_indexes[], float mels[], int order);
void decode_mels_scalar(float mels[], int mel_indexes[], int order);
void quantise_WoE(C2CONST *c2const, MODEL *model, float *e, float xq[]);
int encode_WoE(MODEL *model, float e, float xq[]);
void decode_WoE(C2CONST *c2const, MODEL *model, float *e, float xq[], int n1);
int encode_energy(float e, int bits);
float decode_energy(int index, int bits);
void pack(unsigned char * bits, unsigned int *nbit, int index, unsigned int index_bits);
void pack_natural_or_gray(unsigned char * bits, unsigned int *nbit, int index, unsigned int index_bits, unsigned int gray);
int unpack(const unsigned char * bits, unsigned int *nbit, unsigned int index_bits);
int unpack_natural_or_gray(const unsigned char * bits, unsigned int *nbit, unsigned int index_bits, unsigned int gray);
int lsp_bits(int i);
int lspd_bits(int i);
int lspdt_bits(int i);
int lsp_pred_vq_bits(int i);
int mel_bits(int i);
int lspmelvq_cb_bits(int i);
void apply_lpc_correction(MODEL *model);
float speech_to_uq_lsps(float lsp[],
float ak[],
float Sn[],
float w[],
int m_pitch,
int order
);
int check_lsp_order(float lsp[], int lpc_order);
void bw_expand_lsps(float lsp[], int order, float min_sep_low, float min_sep_high);
void bw_expand_lsps2(float lsp[], int order);
void locate_lsps_jnd_steps(float lsp[], int order);
float decode_amplitudes(MODEL *model,
float ak[],
int lsp_indexes[],
int energy_index,
float lsps[],
float *e);
#endif
|
