Below is a table of basic musical intervals. In addition to the name of the interval and the number of halftones you will find a short name and an example built on C note. After that, intervals are grouped into perfect consonances, imperfect consonances and dissonances.
| Perfect consonances | |||
|---|---|---|---|
| Interval name | Number of semitones | Short name | Example |
| perfect unison | 0 | P1 | c-c |
| perfect fourth | 5 | P4 | c-f |
| perfect fifth | 7 | P5 | c-g |
| perfect octave | 12 | P8 | c-c1 |
| Imperfect consonances | |||
| Interval name | Number of semitones | Short name | Example |
| minor third | 3 | m3 | c-d# |
| major third | 4 | M3 | c-e |
| minor sixth | 8 | m6 | c-g# |
| major sixth | 9 | M6 | c-a |
| minor tenth | 15 | m10 | c-d1# |
| major tenth | 16 | M10 | c-e1 |
| minor thirteenth | 20 | m13 | c-g1# |
| major thirtheenth | 21 | M13 | c-a1 |
| Disonances | |||
| Interval name | Number of semitones | Short name | Example |
| minor second | 1 | m2 | c-c# |
| major second | 2 | M2 | c-d |
| minor third | 3 | m3 | c-d# |
| tritone | 6 | TT | c-f# |
| minor seventh | 10 | m7 | c-a# |
| major seventh | 11 | M7 | c-b |
| minor ninth | 13 | m9 | c-c1# |
| major ninth | 14 | M9 | c-d1 |
| perfect eleventh | 17 | P11 | c-f1 |
| augmented eleventh | 18 | A11 | c-f1# |
| perfect twelfth (tritave) | 19 | P12 | c-g1 |
| minor thirteenth | 22 | m14 | c-a1# |
| major thirteenth | 23 | M14 | c-b1 |
Use of spectrum analyzer provides a plot and trace of signal amplitude in the frequency domain.
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