Compare
Diminished Half Whole vs Diminished Whole Half
The two octatonic 'diminished' scales. Half-whole works over dominant 7; whole-half works over diminished 7.
Diminished Half Whole
R
♭2
2
♭3
3
4
♭5
5
♭6
6
♭7
7
Diminished Whole Half
R
♭2
2
♭3
3
4
♭5
5
♭6
6
♭7
7
What's different
Only in Diminished Half Whole
♭235♭7
Only in Diminished Whole Half
24♭67
In both
R♭3♭56
Other comparisons