PPT Slide

• equal musical intervals - equal frequency ratio

• on a ìmultiplicativeî number line (=log scale) equal ratios are equidistant

• advantage: in graphs below equal intervals have same length

1 1.5 2 3 4 6 8 12

fifth

JUST

x Triad

C D E F G A B C

1

x

x

x

2

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