Comparison of three analysis methods. Successful asymmetric division (dark grey region) of an alto saxophone high C on left (written pitch, 311 Hz) and G♯ on right (written pitch, 246 Hz) fingerings for different initial cell length . The first three tonehole pair cell characteristic frequencies are denoted . The average of the first three Π-cells and of the entire lattice are provided by Δ and □. The cutoff transition band is shown in light grey.