📄 mu.h
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/* u-law and inverse mu-law conversion tables */
int mutab[256] = {
-8031, -7775, -7519, -7263, -7007, -6751, -6495, -6239,
-5983, -5727, -5471, -5215, -4959, -4703, -4447, -4191,
-3999, -3871, -3743, -3615, -3487, -3359, -3231, -3103,
-2975, -2847, -2719, -2591, -2463, -2335, -2207, -2079,
-1983, -1919, -1855, -1791, -1727, -1663, -1599, -1535,
-1471, -1407, -1343, -1279, -1215, -1151, -1087, -1023,
-975, -943, -911, -879, -847, -815, -783, -751,
-719, -687, -655, -623, -591, -559, -527, -495,
-471, -455, -439, -423, -407, -391, -375, -359,
-343, -327, -311, -295, -279, -263, -247, -231,
-219, -211, -203, -195, -187, -179, -171, -163,
-155, -147, -139, -131, -123, -115, -107, -99,
-93, -89, -85, -81, -77, -73, -69, -65,
-61, -57, -53, -49, -45, -41, -37, -33,
-30, -28, -26, -24, -22, -20, -18, -16,
-14, -12, -10, -8, -6, -4, -2, 0,
8031, 7775, 7519, 7263, 7007, 6751, 6495, 6239,
5983, 5727, 5471, 5215, 4959, 4703, 4447, 4191,
3999, 3871, 3743, 3615, 3487, 3359, 3231, 3103,
2975, 2847, 2719, 2591, 2463, 2335, 2207, 2079,
1983, 1919, 1855, 1791, 1727, 1663, 1599, 1535,
1471, 1407, 1343, 1279, 1215, 1151, 1087, 1023,
975, 943, 911, 879, 847, 815, 783, 751,
719, 687, 655, 623, 591, 559, 527, 495,
471, 455, 439, 423, 407, 391, 375, 359,
343, 327, 311, 295, 279, 263, 247, 231,
219, 211, 203, 195, 187, 179, 171, 163,
155, 147, 139, 131, 123, 115, 107, 99,
93, 89, 85, 81, 77, 73, 69, 65,
61, 57, 53, 49, 45, 41, 37, 33,
30, 28, 26, 24, 22, 20, 18, 16,
14, 12, 10, 8, 6, 4, 2, 0
};
/* inverse table works on the absolute value of linear input */
int invmutab[4096] = {
127, 126, 125, 124, 123, 122, 121, 120,
119, 118, 117, 116, 115, 114, 113, 112,
111, 111, 110, 110, 109, 109, 108, 108,
107, 107, 106, 106, 105, 105, 104, 104,
103, 103, 102, 102, 101, 101, 100, 100,
99, 99, 98, 98, 97, 97, 96, 96,
96, 95, 95, 95, 94, 94, 94, 94,
93, 93, 93, 93, 92, 92, 92, 92,
91, 91, 91, 91, 90, 90, 90, 90,
89, 89, 89, 89, 88, 88, 88, 88,
87, 87, 87, 87, 86, 86, 86, 86,
85, 85, 85, 85, 84, 84, 84, 84,
83, 83, 83, 83, 82, 82, 82, 82,
81, 81, 81, 81, 80, 80, 80, 80,
80, 79, 79, 79, 79, 79, 79, 79,
78, 78, 78, 78, 78, 78, 78, 78,
77, 77, 77, 77, 77, 77, 77, 77,
76, 76, 76, 76, 76, 76, 76, 76,
75, 75, 75, 75, 75, 75, 75, 75,
74, 74, 74, 74, 74, 74, 74, 74,
73, 73, 73, 73, 73, 73, 73, 73,
72, 72, 72, 72, 72, 72, 72, 72,
71, 71, 71, 71, 71, 71, 71, 71,
70, 70, 70, 70, 70, 70, 70, 70,
69, 69, 69, 69, 69, 69, 69, 69,
68, 68, 68, 68, 68, 68, 68, 68,
67, 67, 67, 67, 67, 67, 67, 67,
66, 66, 66, 66, 66, 66, 66, 66,
65, 65, 65, 65, 65, 65, 65, 65,
64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 63, 63, 63, 63, 63, 63,
63, 63, 63, 63, 63, 63, 63, 63,
62, 62, 62, 62, 62, 62, 62, 62,
62, 62, 62, 62, 62, 62, 62, 62,
61, 61, 61, 61, 61, 61, 61, 61,
61, 61, 61, 61, 61, 61, 61, 61,
60, 60, 60, 60, 60, 60, 60, 60,
60, 60, 60, 60, 60, 60, 60, 60,
59, 59, 59, 59, 59, 59, 59, 59,
59, 59, 59, 59, 59, 59, 59, 59,
58, 58, 58, 58, 58, 58, 58, 58,
58, 58, 58, 58, 58, 58, 58, 58,
57, 57, 57, 57, 57, 57, 57, 57,
57, 57, 57, 57, 57, 57, 57, 57,
56, 56, 56, 56, 56, 56, 56, 56,
56, 56, 56, 56, 56, 56, 56, 56,
55, 55, 55, 55, 55, 55, 55, 55,
55, 55, 55, 55, 55, 55, 55, 55,
54, 54, 54, 54, 54, 54, 54, 54,
54, 54, 54, 54, 54, 54, 54, 54,
53, 53, 53, 53, 53, 53, 53, 53,
53, 53, 53, 53, 53, 53, 53, 53,
52, 52, 52, 52, 52, 52, 52, 52,
52, 52, 52, 52, 52, 52, 52, 52,
51, 51, 51, 51, 51, 51, 51, 51,
51, 51, 51, 51, 51, 51, 51, 51,
50, 50, 50, 50, 50, 50, 50, 50,
50, 50, 50, 50, 50, 50, 50, 50,
49, 49, 49, 49, 49, 49, 49, 49,
49, 49, 49, 49, 49, 49, 49, 49,
48, 48, 48, 48, 48, 48, 48, 48,
48, 48, 48, 48, 48, 48, 48, 48,
48, 48, 48, 48, 47, 47, 47, 47,
47, 47, 47, 47, 47, 47, 47, 47,
47, 47, 47, 47, 47, 47, 47, 47,
47, 47, 47, 47, 47, 47, 47, 47,
46, 46, 46, 46, 46, 46, 46, 46,
46, 46, 46, 46, 46, 46, 46, 46,
46, 46, 46, 46, 46, 46, 46, 46,
46, 46, 46, 46, 46, 46, 46, 46,
45, 45, 45, 45, 45, 45, 45, 45,
45, 45, 45, 45, 45, 45, 45, 45,
45, 45, 45, 45, 45, 45, 45, 45,
45, 45, 45, 45, 45, 45, 45, 45,
44, 44, 44, 44, 44, 44, 44, 44,
44, 44, 44, 44, 44, 44, 44, 44,
44, 44, 44, 44, 44, 44, 44, 44,
44, 44, 44, 44, 44, 44, 44, 44,
43, 43, 43, 43, 43, 43, 43, 43,
43, 43, 43, 43, 43, 43, 43, 43,
43, 43, 43, 43, 43, 43, 43, 43,
43, 43, 43, 43, 43, 43, 43, 43,
42, 42, 42, 42, 42, 42, 42, 42,
42, 42, 42, 42, 42, 42, 42, 42,
42, 42, 42, 42, 42, 42, 42, 42,
42, 42, 42, 42, 42, 42, 42, 42,
41, 41, 41, 41, 41, 41, 41, 41,
41, 41, 41, 41, 41, 41, 41, 41,
41, 41, 41, 41, 41, 41, 41, 41,
41, 41, 41, 41, 41, 41, 41, 41,
40, 40, 40, 40, 40, 40, 40, 40,
40, 40, 40, 40, 40, 40, 40, 40,
40, 40, 40, 40, 40, 40, 40, 40,
40, 40, 40, 40, 40, 40, 40, 40,
39, 39, 39, 39, 39, 39, 39, 39,
39, 39, 39, 39, 39, 39, 39, 39,
39, 39, 39, 39, 39, 39, 39, 39,
39, 39, 39, 39, 39, 39, 39, 39,
38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38,
37, 37, 37, 37, 37, 37, 37, 37,
37, 37, 37, 37, 37, 37, 37, 37,
37, 37, 37, 37, 37, 37, 37, 37,
37, 37, 37, 37, 37, 37, 37, 37,
36, 36, 36, 36, 36, 36, 36, 36,
36, 36, 36, 36, 36, 36, 36, 36,
36, 36, 36, 36, 36, 36, 36, 36,
36, 36, 36, 36, 36, 36, 36, 36,
35, 35, 35, 35, 35, 35, 35, 35,
35, 35, 35, 35, 35, 35, 35, 35,
35, 35, 35, 35, 35, 35, 35, 35,
35, 35, 35, 35, 35, 35, 35, 35,
34, 34, 34, 34, 34, 34, 34, 34,
34, 34, 34, 34, 34, 34, 34, 34,
34, 34, 34, 34, 34, 34, 34, 34,
34, 34, 34, 34, 34, 34, 34, 34,
33, 33, 33, 33, 33, 33, 33, 33,
33, 33, 33, 33, 33, 33, 33, 33,
33, 33, 33, 33, 33, 33, 33, 33,
33, 33, 33, 33, 33, 33, 33, 33,
32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32,
31, 31, 31, 31, 31, 31, 31, 31,
31, 31, 31, 31, 31, 31, 31, 31,
31, 31, 31, 31, 31, 31, 31, 31,
31, 31, 31, 31, 31, 31, 31, 31,
31, 31, 31, 31, 31, 31, 31, 31,
31, 31, 31, 31, 31, 31, 31, 31,
31, 31, 31, 31, 31, 31, 31, 31,
30, 30, 30, 30, 30, 30, 30, 30,
30, 30, 30, 30, 30, 30, 30, 30,
30, 30, 30, 30, 30, 30, 30, 30,
30, 30, 30, 30, 30, 30, 30, 30,
30, 30, 30, 30, 30, 30, 30, 30,
30, 30, 30, 30, 30, 30, 30, 30,
30, 30, 30, 30, 30, 30, 30, 30,
30, 30, 30, 30, 30, 30, 30, 30,
29, 29, 29, 29, 29, 29, 29, 29,
29, 29, 29, 29, 29, 29, 29, 29,
29, 29, 29, 29, 29, 29, 29, 29,
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