２音間の半音数と音程の関係

図

+-+---+---+-+-+---+---+---+-+-+---+---+-+-+---+---+---+-+-+---+---+-+-+---+---+---+-+-+---+---+-+-+---+---+---+-+---+
| |   |   | | |   |   |   | | |   |   | | |   |   |   | | |   |   | | |   |   |   | | |   |   | | |   |   |   | |   |
| |   |   | | |   |   |   | | |   |   | | |   |   |   | | |   |   | | |   |   |   | | |   |   | | |   |   |   | |   |
| |   |   | | |   |   |   | | |   |   | | |   |   |   | | |   |   | | |   |   |   | | |   |   | | |   |   |   | |   |
| |-23|-21| | |-18|-16|-14| | |-11| -9| | | -6| -4| -2| | | +1| +3| | | +6| +8|+10| | |+13|+15| | |+18|+20|+22| |   |
| +-+-+-+-+ | +-+-+-+-+-+-+ | +-+-+-+-+ | +-+-+-+-+-+-+ | +-+-+-+-+ | +-+-+-+-+-+-+ | +-+-+-+-+ | +-+-+-+-+-+-+ |   |
|   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|-24|-22|-20|-19|-17|-15|-13|-12|-10| -8| -7| -5| -3| -1| 0 | +2| +4| +5| +7| +9|+11|+12|+14|+16|+17|+19|+21|+23|+24|
+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
  C                           C                           C                           C                           C