1 files changed, 24 insertions, 15 deletions

diff --git a/apps/plugins/midi/guspat.c b/apps/plugins/midi/guspat.c
index c5b5832ddb..f650555520 100644
--- a/apps/plugins/midi/guspat.c
+++ b/apps/plugins/midi/guspat.c
@@ -22,21 +22,30 @@
 #include "guspat.h"
 #include "midiutil.h"
 
-/* This came from one of the Gravis documents */
-const uint32_t gustable[]=
+/* Note frequencies in milliHz, base A = 440000
+ * Calculated using:
+ *  double base_a=440000;
+ *  double offset;
+ *  for(offset=-69;offset<=58;offset++)
+ *  {
+ *      int value = (int)round(base_a*pow(2,offset/12));
+ *      printf("%d, ",value);
+ *  }
+ */
+const uint32_t freqtable[]=
 {
-  8175, 8661, 9177, 9722, 10300, 10913, 11562, 12249, 12978, 13750, 14567, 15433,
-  16351, 17323, 18354, 19445, 20601, 21826, 23124, 24499, 25956, 27500, 29135, 30867,
-  32703, 34647, 36708, 38890, 41203, 43653, 46249, 48999, 51913, 54999, 58270, 61735,
-  65406, 69295, 73416, 77781, 82406, 87306, 92498, 97998, 103826, 109999, 116540, 123470,
-  130812, 138591, 146832, 155563, 164813, 174614, 184997, 195997, 207652, 219999, 233081, 246941,
-  261625, 277182, 293664, 311126, 329627, 349228, 369994, 391995, 415304, 440000, 466163, 493883,
-  523251, 554365, 587329, 622254, 659255, 698456, 739989, 783991, 830609, 880000, 932328, 987767,
-  1046503, 1108731, 1174660, 1244509, 1318511, 1396914, 1479979, 1567983, 1661220, 1760002, 1864657, 1975536,
-  2093007, 2217464, 2349321, 2489019, 2637024, 2793830, 2959960, 3135968, 3322443, 3520006, 3729316, 3951073,
-  4186073, 4434930, 4698645, 4978041, 5274051, 5587663, 5919922, 6271939, 6644889, 7040015, 7458636, 7902150,
-  8372036, 8869863, 9397293, 9956085, 10548105, 11175328, 11839847, 12543881
-};
+/* C,       C#,      D,       D#,      E,        F,        F#,       G,       G#,      A,       A#,      B */
+  8176,    8662,    9177,    9723,    10301,    10913,    11562,    12250,   12978,   13750,   14568,   15434,
+  16352,   17324,   18354,   19445,   20602,    21827,    23125,    24500,   25957,   27500,   29135,   30868,
+  32703,   34648,   36708,   38891,   41203,    43654,    46249,    48999,   51913,   55000,   58270,   61735,
+  65406,   69296,   73416,   77782,   82407,    87307,    92499,    97999,   103826,  110000,  116541,  123471,
+  130813,  138591,  146832,  155563,  164814,   174614,   184997,   195998,  207652,  220000,  233082,  246942,
+  261626,  277183,  293665,  311127,  329628,   349228,   369994,   391995,  415305,  440000,  466164,  493883,
+  523251,  554365,  587330,  622254,  659255,   698456,   739989,   783991,  830609,  880000,  932328,  987767,
+  1046502, 1108731, 1174659, 1244508, 1318510,  1396913,  1479978,  1567982, 1661219, 1760000, 1864655, 1975533,
+  2093005, 2217461, 2349318, 2489016, 2637020,  2793826,  2959955,  3135963, 3322438, 3520000, 3729310, 3951066,
+  4186009, 4434922, 4698636, 4978032, 5274041,  5587652,  5919911,  6271927, 6644875, 7040000, 7458620, 7902133,
+  8372018, 8869844, 9397273, 9956063, 10548082, 11175303, 11839822, 12543854 };
 
 static unsigned int readWord(int file)
 {
@@ -141,7 +150,7 @@ static struct GWaveform * loadWaveform(int file)
 static int selectWaveform(struct GPatch * pat, int midiNote)
 {
     /* We divide by 100 here because everyone's freq formula is slightly different */
-    unsigned int tabFreq = gustable[midiNote]/100; /* Comparison */
+    unsigned int tabFreq = freqtable[midiNote]/100; /* Comparison */
     unsigned int a=0;
     for(a=0; a<pat->numWaveforms; a++)
     {