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1994-02-04
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Apparently-To: john.smith@gravis.com
GUS Programmer's Digest Fri, 4 Feb 94 4:20 Volume 9: Issue 1
Today's Topics:
DIGEST ADMIN: You're right, there were no digests yesterday!
LFO tables ...
MIDI Interface w/SDK
Standard Info:
- Meta-info about the GUS can be found at the end of the Digest.
- Before you ask a question, please READ THE FAQ.
----------------------------------------------------------------------
Date: Wed, 2 Feb 1994 07:20:35 -0700 (MST)
From: ddebry@lhasa.dsd.ES.COM (Dave DeBry)
Subject: DIGEST ADMIN: You're right, there were no digests yesterday!
There were no digests yesterday.
This may not seem like an amazing news item to many of you,
but then a lot of you thought it might be one for me, and so promptly
mailed me to let me know that there was no digest.
Folks -- I know when the digests have screwed up.
I'm not just the President of the Gus Digests, I'm also a
client. :)
In any case, hopefully the sysadmins have fixed the problem (I
wish they'd just give me access to the offending machines so I could
fix them, but nooooooooo), and the digests will be sent out tonight.
--
Dave ddebry@ debry@ \ "In summing up, the moral seems
DeBry dsd. peruvian. | A little bit obscure...
es. cs.utah. | Whatever you do,
com edu / Take care of your shoes."
------------------------------
Date: Tue, 1 Feb 94 15:42:16 EST
From: support@fortech.com (Technical Support)
Subject: LFO tables ...
Here are the LFO tables. We calculate the values on the fly. The
tables are too big...
The rate and depths are values in the patch. The frequency,
decible and centible columns are the changes.
Modulation Tables
------------------------------------------------------------------------------
RATE table for TREMOLO* and VIBRATO**
rate frequency rate frequency rate frequency
-----------------------------------------------------------------------
000: 0.050 Hz 085: 2.034 Hz 170: 4.018 Hz
001: 0.073 Hz 086: 2.057 Hz 171: 4.041 Hz
002: 0.097 Hz 087: 2.081 Hz 172: 4.064 Hz
003: 0.120 Hz 088: 2.104 Hz 173: 4.088 Hz
004: 0.143 Hz 089: 2.127 Hz 174: 4.111 Hz
005: 0.167 Hz 090: 2.151 Hz 175: 4.135 Hz
006: 0.190 Hz 091: 2.174 Hz 176: 4.158 Hz
007: 0.213 Hz 092: 2.197 Hz 177: 4.181 Hz
008: 0.237 Hz 093: 2.221 Hz 178: 4.205 Hz
009: 0.260 Hz 094: 2.244 Hz 179: 4.228 Hz
010: 0.283 Hz 095: 2.267 Hz 180: 4.251 Hz
011: 0.307 Hz 096: 2.291 Hz 181: 4.275 Hz
012: 0.330 Hz 097: 2.314 Hz 182: 4.298 Hz
013: 0.353 Hz 098: 2.337 Hz 183: 4.321 Hz
014: 0.377 Hz 099: 2.361 Hz 184: 4.345 Hz
015: 0.400 Hz 100: 2.384 Hz 185: 4.368 Hz
016: 0.423 Hz 101: 2.407 Hz 186: 4.391 Hz
017: 0.447 Hz 102: 2.431 Hz 187: 4.415 Hz
018: 0.470 Hz 103: 2.454 Hz 188: 4.438 Hz
019: 0.493 Hz 104: 2.477 Hz 189: 4.461 Hz
020: 0.517 Hz 105: 2.501 Hz 190: 4.485 Hz
021: 0.540 Hz 106: 2.524 Hz 191: 4.508 Hz
022: 0.563 Hz 107: 2.547 Hz 192: 4.531 Hz
023: 0.587 Hz 108: 2.571 Hz 193: 4.555 Hz
024: 0.610 Hz 109: 2.594 Hz 194: 4.578 Hz
025: 0.633 Hz 110: 2.617 Hz 195: 4.601 Hz
026: 0.657 Hz 111: 2.641 Hz 196: 4.625 Hz
027: 0.680 Hz 112: 2.664 Hz 197: 4.648 Hz
028: 0.704 Hz 113: 2.687 Hz 198: 4.671 Hz
029: 0.727 Hz 114: 2.711 Hz 199: 4.695 Hz
030: 0.750 Hz 115: 2.734 Hz 200: 4.718 Hz
031: 0.774 Hz 116: 2.757 Hz 201: 4.741 Hz
032: 0.797 Hz 117: 2.781 Hz 202: 4.765 Hz
033: 0.820 Hz 118: 2.804 Hz 203: 4.788 Hz
034: 0.844 Hz 119: 2.827 Hz 204: 4.811 Hz
035: 0.867 Hz 120: 2.851 Hz 205: 4.835 Hz
036: 0.890 Hz 121: 2.874 Hz 206: 4.858 Hz
037: 0.914 Hz 122: 2.897 Hz 207: 4.881 Hz
038: 0.937 Hz 123: 2.921 Hz 208: 4.905 Hz
039: 0.960 Hz 124: 2.944 Hz 209: 4.928 Hz
040: 0.984 Hz 125: 2.967 Hz 210: 4.951 Hz
041: 1.007 Hz 126: 2.991 Hz 211: 4.975 Hz
042: 1.030 Hz 127: 3.014 Hz 212: 4.998 Hz
043: 1.054 Hz 128: 3.038 Hz 213: 5.021 Hz
044: 1.077 Hz 129: 3.061 Hz 214: 5.045 Hz
045: 1.100 Hz 130: 3.084 Hz 215: 5.068 Hz
046: 1.124 Hz 131: 3.108 Hz 216: 5.091 Hz
047: 1.147 Hz 132: 3.131 Hz 217: 5.115 Hz
048: 1.170 Hz 133: 3.154 Hz 218: 5.138 Hz
049: 1.194 Hz 134: 3.178 Hz 219: 5.161 Hz
050: 1.217 Hz 135: 3.201 Hz 220: 5.185 Hz
051: 1.240 Hz 136: 3.224 Hz 221: 5.208 Hz
052: 1.264 Hz 137: 3.248 Hz 222: 5.231 Hz
053: 1.287 Hz 138: 3.271 Hz 223: 5.255 Hz
054: 1.310 Hz 139: 3.294 Hz 224: 5.278 Hz
055: 1.334 Hz 140: 3.318 Hz 225: 5.301 Hz
056: 1.357 Hz 141: 3.341 Hz 226: 5.325 Hz
057: 1.380 Hz 142: 3.364 Hz 227: 5.348 Hz
058: 1.404 Hz 143: 3.388 Hz 228: 5.372 Hz
059: 1.427 Hz 144: 3.411 Hz 229: 5.395 Hz
060: 1.450 Hz 145: 3.434 Hz 230: 5.418 Hz
061: 1.474 Hz 146: 3.458 Hz 231: 5.442 Hz
062: 1.497 Hz 147: 3.481 Hz 232: 5.465 Hz
063: 1.520 Hz 148: 3.504 Hz 233: 5.488 Hz
064: 1.544 Hz 149: 3.528 Hz 234: 5.512 Hz
065: 1.567 Hz 150: 3.551 Hz 235: 5.535 Hz
066: 1.590 Hz 151: 3.574 Hz 236: 5.558 Hz
067: 1.614 Hz 152: 3.598 Hz 237: 5.582 Hz
068: 1.637 Hz 153: 3.621 Hz 238: 5.605 Hz
069: 1.660 Hz 154: 3.644 Hz 239: 5.628 Hz
070: 1.684 Hz 155: 3.668 Hz 240: 5.652 Hz
071: 1.707 Hz 156: 3.691 Hz 241: 5.675 Hz
072: 1.730 Hz 157: 3.714 Hz 242: 5.698 Hz
073: 1.754 Hz 158: 3.738 Hz 243: 5.722 Hz
074: 1.777 Hz 159: 3.761 Hz 244: 5.745 Hz
075: 1.800 Hz 160: 3.784 Hz 245: 5.768 Hz
076: 1.824 Hz 161: 3.808 Hz 246: 5.792 Hz
077: 1.847 Hz 162: 3.831 Hz 247: 5.815 Hz
078: 1.871 Hz 163: 3.854 Hz 248: 5.838 Hz
079: 1.894 Hz 164: 3.878 Hz 249: 5.862 Hz
080: 1.917 Hz 165: 3.901 Hz 250: 5.885 Hz
081: 1.941 Hz 166: 3.924 Hz 251: 5.908 Hz
082: 1.964 Hz 167: 3.948 Hz 252: 5.932 Hz
083: 1.987 Hz 168: 3.971 Hz 253: 5.955 Hz
084: 2.011 Hz 169: 3.994 Hz 254: 5.978 Hz
255: 6.002 Hz
* Tremolo rates for the GF1 Ultrasound vary a small amount by depth. The
larger the depth the more accurate the rate.
** Vibrato rates for the GF1 Ultrasound lose resolution as the rate increases.
In other words, you will hear a rate difference between 0 and 1, but not
between 169 and 179.
-----------------------------------------------------------------------------
DEPTH table for TREMOLO
depth decibels depth decibels depth decibels
-----------------------------------------------------------------------------
000: OFF 085: 4.031 dB 170: 8.016 dB
001: 0.094 dB 086: 4.078 dB 171: 8.062 dB
002: 0.141 dB 087: 4.125 dB 172: 8.109 dB
003: 0.188 dB 088: 4.172 dB 173: 8.156 dB
004: 0.234 dB 089: 4.219 dB 174: 8.203 dB
005: 0.281 dB 090: 4.266 dB 175: 8.250 dB
006: 0.328 dB 091: 4.312 dB 176: 8.297 dB
007: 0.375 dB 092: 4.359 dB 177: 8.344 dB
008: 0.422 dB 093: 4.406 dB 178: 8.391 dB
009: 0.469 dB 094: 4.453 dB 179: 8.438 dB
010: 0.516 dB 095: 4.500 dB 180: 8.484 dB
011: 0.562 dB 096: 4.547 dB 181: 8.531 dB
012: 0.609 dB 097: 4.594 dB 182: 8.578 dB
013: 0.656 dB 098: 4.641 dB 183: 8.625 dB
014: 0.703 dB 099: 4.688 dB 184: 8.672 dB
015: 0.750 dB 100: 4.734 dB 185: 8.719 dB
016: 0.797 dB 101: 4.781 dB 186: 8.766 dB
017: 0.844 dB 102: 4.828 dB 187: 8.812 dB
018: 0.891 dB 103: 4.875 dB 188: 8.859 dB
019: 0.938 dB 104: 4.922 dB 189: 8.906 dB
020: 0.984 dB 105: 4.969 dB 190: 8.953 dB
021: 1.031 dB 106: 5.016 dB 191: 9.000 dB
022: 1.078 dB 107: 5.062 dB 192: 9.047 dB
023: 1.125 dB 108: 5.109 dB 193: 9.094 dB
024: 1.172 dB 109: 5.156 dB 194: 9.141 dB
025: 1.219 dB 110: 5.203 dB 195: 9.188 dB
026: 1.266 dB 111: 5.250 dB 196: 9.234 dB
027: 1.312 dB 112: 5.297 dB 197: 9.281 dB
028: 1.359 dB 113: 5.344 dB 198: 9.328 dB
029: 1.406 dB 114: 5.391 dB 199: 9.375 dB
030: 1.453 dB 115: 5.438 dB 200: 9.422 dB
031: 1.500 dB 116: 5.484 dB 201: 9.469 dB
032: 1.547 dB 117: 5.531 dB 202: 9.516 dB
033: 1.594 dB 118: 5.578 dB 203: 9.562 dB
034: 1.641 dB 119: 5.625 dB 204: 9.609 dB
035: 1.688 dB 120: 5.672 dB 205: 9.656 dB
036: 1.734 dB 121: 5.719 dB 206: 9.703 dB
037: 1.781 dB 122: 5.766 dB 207: 9.750 dB
038: 1.828 dB 123: 5.812 dB 208: 9.797 dB
039: 1.875 dB 124: 5.859 dB 209: 9.844 dB
040: 1.922 dB 125: 5.906 dB 210: 9.891 dB
041: 1.969 dB 126: 5.953 dB 211: 9.938 dB
042: 2.016 dB 127: 6.000 dB 212: 9.984 dB
043: 2.062 dB 128: 6.047 dB 213: 10.031 dB
044: 2.109 dB 129: 6.094 dB 214: 10.078 dB
045: 2.156 dB 130: 6.141 dB 215: 10.125 dB
046: 2.203 dB 131: 6.188 dB 216: 10.172 dB
047: 2.250 dB 132: 6.234 dB 217: 10.219 dB
048: 2.297 dB 133: 6.281 dB 218: 10.266 dB
049: 2.344 dB 134: 6.328 dB 219: 10.312 dB
050: 2.391 dB 135: 6.375 dB 220: 10.359 dB
051: 2.438 dB 136: 6.422 dB 221: 10.406 dB
052: 2.484 dB 137: 6.469 dB 222: 10.453 dB
053: 2.531 dB 138: 6.516 dB 223: 10.500 dB
054: 2.578 dB 139: 6.562 dB 224: 10.547 dB
055: 2.625 dB 140: 6.609 dB 225: 10.594 dB
056: 2.672 dB 141: 6.656 dB 226: 10.641 dB
057: 2.719 dB 142: 6.703 dB 227: 10.688 dB
058: 2.766 dB 143: 6.750 dB 228: 10.734 dB
059: 2.812 dB 144: 6.797 dB 229: 10.781 dB
060: 2.859 dB 145: 6.844 dB 230: 10.828 dB
061: 2.906 dB 146: 6.891 dB 231: 10.875 dB
062: 2.953 dB 147: 6.938 dB 232: 10.922 dB
063: 3.000 dB 148: 6.984 dB 233: 10.969 dB
064: 3.047 dB 149: 7.031 dB 234: 11.016 dB
065: 3.094 dB 150: 7.078 dB 235: 11.062 dB
066: 3.141 dB 151: 7.125 dB 236: 11.109 dB
067: 3.188 dB 152: 7.172 dB 237: 11.156 dB
068: 3.234 dB 153: 7.219 dB 238: 11.203 dB
069: 3.281 dB 154: 7.266 dB 239: 11.250 dB
070: 3.328 dB 155: 7.312 dB 240: 11.297 dB
071: 3.375 dB 156: 7.359 dB 241: 11.344 dB
072: 3.422 dB 157: 7.406 dB 242: 11.391 dB
073: 3.469 dB 158: 7.453 dB 243: 11.438 dB
074: 3.516 dB 159: 7.500 dB 244: 11.484 dB
075: 3.562 dB 160: 7.547 dB 245: 11.531 dB
076: 3.609 dB 161: 7.594 dB 246: 11.578 dB
077: 3.656 dB 162: 7.641 dB 247: 11.625 dB
078: 3.703 dB 163: 7.688 dB 248: 11.672 dB
079: 3.750 dB 164: 7.734 dB 249: 11.719 dB
080: 3.797 dB 165: 7.781 dB 250: 11.766 dB
081: 3.844 dB 166: 7.828 dB 251: 11.812 dB
082: 3.891 dB 167: 7.875 dB 252: 11.859 dB
083: 3.938 dB 168: 7.922 dB 253: 11.906 dB
084: 3.984 dB 169: 7.969 dB 254: 11.953 dB
255: 12.000 dB
-----------------------------------------------------------------------------
DEPTH table for VIBRATO
depth centibels depth centibels depth centibels
-----------------------------------------------------------------------------
000: OFF 085: 0403.1 cents 170: 0801.6 cents
001: 0009.4 cents 086: 0407.8 cents 171: 0806.2 cents
002: 0014.1 cents 087: 0412.5 cents 172: 0810.9 cents
003: 0018.8 cents 088: 0417.2 cents 173: 0815.6 cents
004: 0023.4 cents 089: 0421.9 cents 174: 0820.3 cents
005: 0028.1 cents 090: 0426.6 cents 175: 0825.0 cents
006: 0032.8 cents 091: 0431.2 cents 176: 0829.7 cents
007: 0037.5 cents 092: 0435.9 cents 177: 0834.4 cents
008: 0042.2 cents 093: 0440.6 cents 178: 0839.1 cents
009: 0046.9 cents 094: 0445.3 cents 179: 0843.8 cents
010: 0051.6 cents 095: 0450.0 cents 180: 0848.4 cents
011: 0056.2 cents 096: 0454.7 cents 181: 0853.1 cents
012: 0060.9 cents 097: 0459.4 cents 182: 0857.8 cents
013: 0065.6 cents 098: 0464.1 cents 183: 0862.5 cents
014: 0070.3 cents 099: 0468.8 cents 184: 0867.2 cents
015: 0075.0 cents 100: 0473.4 cents 185: 0871.9 cents
016: 0079.7 cents 101: 0478.1 cents 186: 0876.6 cents
017: 0084.4 cents 102: 0482.8 cents 187: 0881.2 cents
018: 0089.1 cents 103: 0487.5 cents 188: 0885.9 cents
019: 0093.8 cents 104: 0492.2 cents 189: 0890.6 cents
020: 0098.4 cents 105: 0496.9 cents 190: 0895.3 cents
021: 0103.1 cents 106: 0501.6 cents 191: 0900.0 cents
022: 0107.8 cents 107: 0506.2 cents 192: 0904.7 cents
023: 0112.5 cents 108: 0510.9 cents 193: 0909.4 cents
024: 0117.2 cents 109: 0515.6 cents 194: 0914.1 cents
025: 0121.9 cents 110: 0520.3 cents 195: 0918.8 cents
026: 0126.6 cents 111: 0525.0 cents 196: 0923.4 cents
027: 0131.2 cents 112: 0529.7 cents 197: 0928.1 cents
028: 0135.9 cents 113: 0534.4 cents 198: 0932.8 cents
029: 0140.6 cents 114: 0539.1 cents 199: 0937.5 cents
030: 0145.3 cents 115: 0543.8 cents 200: 0942.2 cents
031: 0150.0 cents 116: 0548.4 cents 201: 0946.9 cents
032: 0154.7 cents 117: 0553.1 cents 202: 0951.6 cents
033: 0159.4 cents 118: 0557.8 cents 203: 0956.2 cents
034: 0164.1 cents 119: 0562.5 cents 204: 0960.9 cents
035: 0168.8 cents 120: 0567.2 cents 205: 0965.6 cents
036: 0173.4 cents 121: 0571.9 cents 206: 0970.3 cents
037: 0178.1 cents 122: 0576.6 cents 207: 0975.0 cents
038: 0182.8 cents 123: 0581.2 cents 208: 0979.7 cents
039: 0187.5 cents 124: 0585.9 cents 209: 0984.4 cents
040: 0192.2 cents 125: 0590.6 cents 210: 0989.1 cents
041: 0196.9 cents 126: 0595.3 cents 211: 0993.8 cents
042: 0201.6 cents 127: 0600.0 cents 212: 0998.4 cents
043: 0206.2 cents 128: 0604.7 cents 213: 1003.1 cents
044: 0210.9 cents 129: 0609.4 cents 214: 1007.8 cents
045: 0215.6 cents 130: 0614.1 cents 215: 1012.5 cents
046: 0220.3 cents 131: 0618.8 cents 216: 1017.2 cents
047: 0225.0 cents 132: 0623.4 cents 217: 1021.9 cents
048: 0229.7 cents 133: 0628.1 cents 218: 1026.6 cents
049: 0234.4 cents 134: 0632.8 cents 219: 1031.2 cents
050: 0239.1 cents 135: 0637.5 cents 220: 1035.9 cents
051: 0243.8 cents 136: 0642.2 cents 221: 1040.6 cents
052: 0248.4 cents 137: 0646.9 cents 222: 1045.3 cents
053: 0253.1 cents 138: 0651.6 cents 223: 1050.0 cents
054: 0257.8 cents 139: 0656.2 cents 224: 1054.7 cents
055: 0262.5 cents 140: 0660.9 cents 225: 1059.4 cents
056: 0267.2 cents 141: 0665.6 cents 226: 1064.1 cents
057: 0271.9 cents 142: 0670.3 cents 227: 1068.8 cents
058: 0276.6 cents 143: 0675.0 cents 228: 1073.4 cents
059: 0281.2 cents 144: 0679.7 cents 229: 1078.1 cents
060: 0285.9 cents 145: 0684.4 cents 230: 1082.8 cents
061: 0290.6 cents 146: 0689.1 cents 231: 1087.5 cents
062: 0295.3 cents 147: 0693.8 cents 232: 1092.2 cents
063: 0300.0 cents 148: 0698.4 cents 233: 1096.9 cents
064: 0304.7 cents 149: 0703.1 cents 234: 1101.6 cents
065: 0309.4 cents 150: 0707.8 cents 235: 1106.2 cents
066: 0314.1 cents 151: 0712.5 cents 236: 1110.9 cents
067: 0318.8 cents 152: 0717.2 cents 237: 1115.6 cents
068: 0323.4 cents 153: 0721.9 cents 238: 1120.3 cents
069: 0328.1 cents 154: 0726.6 cents 239: 1125.0 cents
070: 0332.8 cents 155: 0731.2 cents 240: 1129.7 cents
071: 0337.5 cents 156: 0735.9 cents 241: 1134.4 cents
072: 0342.2 cents 157: 0740.6 cents 242: 1139.1 cents
073: 0346.9 cents 158: 0745.3 cents 243: 1143.8 cents
074: 0351.6 cents 159: 0750.0 cents 244: 1148.4 cents
075: 0356.2 cents 160: 0754.7 cents 245: 1153.1 cents
076: 0360.9 cents 161: 0759.4 cents 246: 1157.8 cents
077: 0365.6 cents 162: 0764.1 cents 247: 1162.5 cents
078: 0370.3 cents 163: 0768.8 cents 248: 1167.2 cents
079: 0375.0 cents 164: 0773.4 cents 249: 1171.9 cents
080: 0379.7 cents 165: 0778.1 cents 250: 1176.6 cents
081: 0384.4 cents 166: 0782.8 cents 251: 1181.2 cents
082: 0389.1 cents 167: 0787.5 cents 252: 1185.9 cents
083: 0393.8 cents 168: 0792.2 cents 253: 1190.6 cents
084: 0398.4 cents 169: 0796.9 cents 254: 1195.3 cents
255: 1200.0 cents
1 cent = 1/100 of a semitone
1 semitone = 1 half step
-----------------------------------------------------------------------------
Patch editor rate table for envelopes.
Best values good values Overlaps
---------------------------------------------
055 - 063 047 - 063 111 - 118 overlaps 061 - 063
119 - 127 111 - 127 175 - 182 overlaps 125 - 127
183 - 191 175 - 191 239 - 246 overlaps 189 - 191
247 - 255 239 - 255
-----------------------------------------------------------------------------
Forte Tech Support
------------------------------
Date: Thu, 3 Feb 94 15:40:49 CST
From: Jay Stelly <jay@csccat.cs.com>
Subject: MIDI Interface w/SDK
I am having some trouble using the MIDI handler in the SDK. My first concern
is the port number. The SDK computes the MIDI control port as
base_address + 0x100 (In my case 0x240 + 0x100 = 0x340). I thought the MIDI
port was supposed to be at 0x300 or 0x330, not relative to the base address
of the card ( this is from my experience with coding MIDI for the SoundBlaster
compatible cards, and I thought the GUS would do it the same way, maybe not)
At any rate, I install my MIDI handler with UltraMidiRecvHandler() and then
Enable MIDI input with UltraMidiEnableRecv(). As soon as the SDK code for this
writes the control word to the MIDI port, my system locks. My MIDI handler
is never called. Is there a bug in the MIDI handling ? I am still using
the 2.01 SDK (I am going to upgrade soon, so if an upgrade will fix this,
let me know that too, but I have no direct FTP access, so I haven't yet
done it). Has anyone used these functions sucessfully?
Jay Stelly
jay@cs.com
------------------------------
End of GUS Programmer's Digest V9 #1
************************************
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