Chapter 2
Just three semitones span the notes of a minor third.
The interval between the fifth harmonic (5X) and the sixth harmonic (6X) gives the minor third interval.
Just three semitones span the notes of a minor third.
The frequency ratio of the minor third is 6X/5X = 6:5.
This interval is also very important. It is the second interval of a major triad chord and the first interval of a minor triad chord (we will cover triad chords later).
This interval also covers three white positions of the C major scale but is one semitone smaller than the major third shown above (See thick red circle below).
Just three semitones span the notes of a minor third.