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-
- // Table of midi note frequencies * 2
- // They are times 2 for greater accuracy, yet still fits in a word.
- // Generated from Excel by =ROUND(2*440/32*(2^((x-9)/12)),0) for 0<x<128
- // The lowest notes might not work, depending on the Arduino clock frequency
-
- const unsigned int tune_frequencies2_PGM[128] =
- {
- 16,17,18,19,21,22,23,24,26,28,29,31,33,35,37,39,41,
- 44,46,49,52,55,58,62,65,69,73,78,82,87,92,98,104,110,
- 117,123,131,139,147,156,165,175,185,196,208,220,233,
- 247,262,277,294,311,330,349,370,392,415,440,466,494,
- 523,554,587,622,659,698,740,784,831,880,932,988,1047,
- 1109,1175,1245,1319,1397,1480,1568,1661,1760,1865,1976,
- 2093,2217,2349,2489,2637,2794,2960,3136,3322,3520,3729,
- 3951,4186,4435,4699,4978,5274,5588,5920,6272,6645,7040,
- 7459,7902,8372,8870,9397,9956,10548,11175,11840,12544,
- 13290,14080,14917,15804,16744,17740,18795,19912,21096,
- 22351,23680,25088
- };
-
- #define AMPLITUDE (0.4)
- #define CMD_PLAYNOTE 0x90 /* play a note: low nibble is generator #, note is next byte */
- #define CMD_STOPNOTE 0x80 /* stop a note: low nibble is generator # */
- #define CMD_RESTART 0xe0 /* restart the score from the beginning */
- #define CMD_STOP 0xf0 /* stop playing */
-
- // User must supply this score array
- extern unsigned char score[];
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