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rescaled lookup table

This commit is contained in:
Gordon JC Pearce 2026-01-09 00:44:19 +00:00
parent 6a8e0686a6
commit d0a259a960
2 changed files with 24 additions and 18 deletions
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12
plugin/module.cpp
View File

@ -173,15 +173,21 @@ void Module::run(Voice* voices, uint32_t blockSize) {
int8_t semi = pitch >> 8;
semi -= 36;
float frac = (pitch & 0xff) / 256.0;
if (semi<0) { semi=0; frac = 0; }
if (semi>=103) { semi=103; frac = 0; };
if (semi < 0) {
semi = 0;
frac = 0;
}
if (semi >= 103) {
semi = 103;
frac = 0;
};
float p1 = pitchTable[semi], p2 = pitchTable[semi + 1];
int16_t px = ((p2 - p1) * frac + p1); // interpolated pitch from table
// octave divider
px *= (patchRam.switch1 & 0x07);
v->omega = px / (sampleRate * 4.0f); // FIXME recalculate table using proper scaler
v->omega = px / sampleRate; // FIXME recalculate table using proper scaler
// per voice we need to calculate the key follow amount and envelope amount
v->vcfCut = vcfBase + (((v->env * patchRam.vcfEnv) >> 7) * ((patchRam.switch2 & 0x02) ? -1 : 1));

26
plugin/tables.cpp
View File

@ -89,19 +89,19 @@ uint16_t lfoDelayTable[8] = {
0xffff, 0x0419, 0x020c, 0x015e, 0x0100, 0x0100, 0x0100, 0x0100};
float pitchTable[104] = {
32.494, 34.430, 36.486, 38.658, 40.962, 43.399, 45.990, 48.731,
51.633, 54.711, 57.969, 61.419, 65.072, 68.944, 73.059, 77.405,
82.014, 86.892, 92.077, 97.556, 103.365, 109.529, 116.043, 122.933,
130.242, 137.988, 146.220, 154.919, 164.136, 173.898, 184.264, 195.217,
206.847, 219.178, 232.207, 245.972, 260.586, 276.091, 292.569, 309.981,
328.407, 347.947, 368.664, 390.549, 413.822, 438.500, 464.576, 492.005,
521.241, 552.334, 585.309, 620.155, 657.030, 696.136, 737.463, 781.250,
827.815, 877.193, 929.368, 984.252, 1042.753, 1104.972, 1170.960, 1240.695,
1314.060, 1392.758, 1474.926, 1562.500, 1655.629, 1754.386, 1858.736, 1968.504,
2085.506, 2209.945, 2341.920, 2481.390, 2628.121, 2785.515, 2949.853, 3125.000,
3311.258, 3508.772, 3717.472, 3937.008, 4175.365, 4424.779, 4683.841, 4962.779,
5263.158, 5571.031, 5899.705, 6250.000, 6622.517, 7017.544, 7434.944, 7874.016,
8333.333, 8849.558, 9389.671, 9950.249, 10526.316, 11173.184, 11834.320, 12500.000
8.123, 8.607, 9.122, 9.664, 10.240, 10.850, 11.497, 12.183,
12.908, 13.678, 14.492, 15.355, 16.268, 17.236, 18.265, 19.351,
20.504, 21.723, 23.019, 24.389, 25.841, 27.382, 29.011, 30.733,
32.561, 34.497, 36.555, 38.730, 41.034, 43.474, 46.066, 48.804,
51.712, 54.795, 58.052, 61.493, 65.147, 69.023, 73.142, 77.495,
82.102, 86.987, 92.166, 97.637, 103.455, 109.625, 116.144, 123.001,
130.310, 138.083, 146.327, 155.039, 164.258, 174.034, 184.366, 195.312,
206.954, 219.298, 232.342, 246.063, 260.688, 276.243, 292.740, 310.174,
328.515, 348.189, 368.732, 390.625, 413.907, 438.596, 464.684, 492.126,
521.376, 552.486, 585.480, 620.347, 657.030, 696.379, 737.463, 781.250,
827.815, 877.193, 929.368, 984.252, 1043.841, 1106.195, 1170.960, 1240.695,
1315.789, 1392.758, 1474.926, 1562.500, 1655.629, 1754.386, 1858.736, 1968.504,
2083.333, 2212.389, 2347.418, 2487.562, 2631.579, 2793.296, 2958.580, 3125.000,
};
#endif