! dudon_meancaline.scl ! 12 of 19-tones quasi-equal HT with coherent semifourths on black keys 12 ! 1420/1371 7648/6855 8224/6855 2844/2285 9178/6855 3168/2285 2048/1371 10606/6855 3808/2285 4096/2285 12736/6855 2/1 ! differential coherence of semifourths : ! F#- Eb = G, C# - Bb = D, G# - F = A ! Meancaline sequence x^9 - 32 = x^4 Dudon 2009