?? baseunit.c
字號:
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include"baseunit.h"
#include"encoder.h"
#include"decoder.h"
/*
* g7231.c
* 2006-5-11
*/
Flag Overflow =0;
Flag Carry =0;
CODCNGDEF CodCng;
CODSTATDEF CodStat;
DECCNGDEF DecCng;
DECSTATDEF DecStat;
Flag UsePf;
VADSTATDEF VadStat;
Flag UseHp;
Flag UseVx;
enum Crate WrkRate;
enum Wmode WrkMode;
/*
**
**文件: tab_lbc.c
**
** 描述: G.723 編碼和解碼中使用的數組
**
** 數組: HammingWindowTable[180]
**
** 線性預測編碼計算和濾波
**
** BinomialWindowTable[10]
** BandExpTable[10]
**
** 行頻譜對計算和量化
**
** CosineTable[512]
** LspDcTable[10]
** BandInfoTable[3][2]
** Band0Tb8[256*3]
** Band1Tb8[256*3]
** Band2Tb8[256*4]
** BandQntTable[3]
**
** 感觀式濾波器和后級濾波器
**
** PerFiltZeroTable[10]
** PerFiltPoleTable[10]
** PostFiltZeroTable[10]
** PostFiltPoleTable[10]
** LpfConstTable[2] (pitch postfilter)
**
** 代數編碼激發或多脈沖最大擬真量化
**
** Nb_puls[4] (MP-MLQ)
** FcbkGainTable[24] (ACELP and MP-MLQ)
** MaxPosTable[4] (MP-MLQ), Word32
** CombinatorialTable[6][30](MP-MLQ),Word32
** epsi170[170] (ACELP)
** gain170[170] (ACELP)
**
** 基頻預測
**
** AcbkGainTable085[85*20]
** AcbkGainTable170[170*20]
** AcbkGainTablePtr[2]
**
** Taming程序
**
** tabgain170[170]
** tabgain85[85]
**
** 減緩噪聲的產生
**
** fact[4]
** L_bseg[3], Word32
** base[3]
**
**
** 所有的數組均為16位的，除非特殊說明
*/
/*
** HammingWindowTable:
**
** Hamming Window coefficients scaled by 32768 (Q15).
**
*/
Word16 HammingWindowTable[LpcFrame] = {
2621 ,
2631 ,
2659 ,
2705 ,
2770 ,
2853 ,
2955 ,
3074 ,
3212 ,
3367 ,
3541 ,
3731 ,
3939 ,
4164 ,
4405 ,
4663 ,
4937 ,
5226 ,
5531 ,
5851 ,
6186 ,
6534 ,
6897 ,
7273 ,
7661 ,
8062 ,
8475 ,
8899 ,
9334 ,
9780 ,
10235 ,
10699 ,
11172 ,
11653 ,
12141 ,
12636 ,
13138 ,
13645 ,
14157 ,
14673 ,
15193 ,
15716 ,
16242 ,
16769 ,
17298 ,
17827 ,
18356 ,
18884 ,
19411 ,
19935 ,
20457 ,
20975 ,
21489 ,
21999 ,
22503 ,
23002 ,
23494 ,
23978 ,
24455 ,
24924 ,
25384 ,
25834 ,
26274 ,
26704 ,
27122 ,
27529 ,
27924 ,
28306 ,
28675 ,
29031 ,
29373 ,
29700 ,
30012 ,
30310 ,
30592 ,
30857 ,
31107 ,
31340 ,
31557 ,
31756 ,
31938 ,
32102 ,
32249 ,
32377 ,
32488 ,
32580 ,
32654 ,
32710 ,
32747 ,
32766 ,
32766 ,
32747 ,
32710 ,
32654 ,
32580 ,
32488 ,
32377 ,
32249 ,
32102 ,
31938 ,
31756 ,
31557 ,
31340 ,
31107 ,
30857 ,
30592 ,
30310 ,
30012 ,
29700 ,
29373 ,
29031 ,
28675 ,
28306 ,
27924 ,
27529 ,
27122 ,
26704 ,
26274 ,
25834 ,
25384 ,
24924 ,
24455 ,
23978 ,
23494 ,
23002 ,
22503 ,
21999 ,
21489 ,
20975 ,
20457 ,
19935 ,
19411 ,
18884 ,
18356 ,
17827 ,
17298 ,
16769 ,
16242 ,
15716 ,
15193 ,
14673 ,
14157 ,
13645 ,
13138 ,
12636 ,
12141 ,
11653 ,
11172 ,
10699 ,
10235 ,
9780 ,
9334 ,
8899 ,
8475 ,
8062 ,
7661 ,
7273 ,
6897 ,
6534 ,
6186 ,
5851 ,
5531 ,
5226 ,
4937 ,
4663 ,
4405 ,
4164 ,
3939 ,
3731 ,
3541 ,
3367 ,
3212 ,
3074 ,
2955 ,
2853 ,
2770 ,
2705 ,
2659 ,
2631 ,
2621 ,
} ;
/*
** BinomialWindowTable:
**
** Purpose:
** Binomial Window coefficients used to weight the autocorrelation before
** Levinson-Durbin in the LPC coefficient calculation.
**
** Table Structure:
** Coefficients are scaled by 32768 (Q15).
**
*/
Word16 BinomialWindowTable[LpcOrder] = {
32749 ,
32695 ,
32604 ,
32477 ,
32315 ,
32118 ,
31887 ,
31622 ,
31324 ,
30995 ,
} ;
/*
** BandExpTable:
**
** Purpose:
** Do bandwidth expansion on the LPC coefficients by scaling the
** poles of the LPC synthesis filter by a factor of 0.994
**
** Table Structure:
** Table values correspond to (0.994) to the power of x,
** where x = [0,..,10].
** These values are scaled by 32768 (Q15).
**
*/
Word16 BandExpTable[LpcOrder] = {
32571 ,
32376 ,
32182 ,
31989 ,
31797 ,
31606 ,
31416 ,
31228 ,
31040 ,
30854 ,
} ;
/*
** CosineTable:
**
** Purpose:
** Used to evaluate polynomial for LSP-LPC conversion
**
** Table Structure:
** Contains one period of a cosine wave. Amplitude has been
** scaled to go between 0 and 16384 instead of 0 and 1.
**
*/
Word16 CosineTable[CosineTableSize] = {
16384 ,
16383 ,
16379 ,
16373 ,
16364 ,
16353 ,
16340 ,
16324 ,
16305 ,
16284 ,
16261 ,
16235 ,
16207 ,
16176 ,
16143 ,
16107 ,
16069 ,
16029 ,
15986 ,
15941 ,
15893 ,
15843 ,
15791 ,
15736 ,
15679 ,
15619 ,
15557 ,
15493 ,
15426 ,
15357 ,
15286 ,
15213 ,
15137 ,
15059 ,
14978 ,
14896 ,
14811 ,
14724 ,
14635 ,
14543 ,
14449 ,
14354 ,
14256 ,
14155 ,
14053 ,
13949 ,
13842 ,
13733 ,
13623 ,
13510 ,
13395 ,
13279 ,
13160 ,
13039 ,
12916 ,
12792 ,
12665 ,
12537 ,
12406 ,
12274 ,
12140 ,
12004 ,
11866 ,
11727 ,
11585 ,
11442 ,
11297 ,
11151 ,
11003 ,
10853 ,
10702 ,
10549 ,
10394 ,
10238 ,
10080 ,
9921 ,
9760 ,
9598 ,
9434 ,
9269 ,
9102 ,
8935 ,
8765 ,
8595 ,
8423 ,
8250 ,
8076 ,
7900 ,
7723 ,
7545 ,
7366 ,
7186 ,
7005 ,
6823 ,
6639 ,
6455 ,
6270 ,
6084 ,
5897 ,
5708 ,
5520 ,
5330 ,
5139 ,
4948 ,
4756 ,
4563 ,
4370 ,
4176 ,
3981 ,
3786 ,
3590 ,
3393 ,
3196 ,
2999 ,
2801 ,
2603 ,
2404 ,
2205 ,
2006 ,
1806 ,
1606 ,
1406 ,
1205 ,
1005 ,
804 ,
603 ,
402 ,
201 ,
0 ,
-201 ,
-402 ,
-603 ,
-804 ,
-1005 ,
-1205 ,
-1406 ,
-1606 ,
-1806 ,
-2006 ,
-2205 ,
-2404 ,
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