7L 3s (4/1-equivalent)
7L 3s<4/1> refers to a non-octave MOS scale with a period of a 4/1 and which has 7 large and 3 small steps. These scales are in some ways a double octave clone of diatonic scales because they are generated from perfect fifths and have the 7edo/7ed4 685-cent flat fifth and 5edo/10ed4's 720-cent sharp fifth at the ends of the tuning spectrum. However, ~3/2 is now the chroma-negative rather than chroma-positive generator, equalized and collapsed tunings are now swapped (equalized is 720-cent fifth and collapsed is 685-cent fifth), and the basic tuning is now the 705-cent gentle fifth from 17edo/17ed4 instead of 12edo's fifth. These scales are also more widely spaced than diatonic scales, closer melodically to an octave-period pentatonic scale.
| ↖ 6L 2s⟨4/1⟩ | ↑ 7L 2s⟨4/1⟩ | 8L 2s⟨4/1⟩ ↗ |
| ← 6L 3s⟨4/1⟩ | 7L 3s (4/1-equivalent) | 8L 3s⟨4/1⟩ → |
| ↙ 6L 4s⟨4/1⟩ | ↓ 7L 4s⟨4/1⟩ | 8L 4s⟨4/1⟩ ↘ |
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