Spiral tunings: Difference between revisions
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'''''S1m1.05946''''' - One-sided spiral with a margin of the twelfth root of 2. | '''''S1m1.05946''''' - One-sided spiral with a margin of the twelfth root of 2. | ||
'''''S7x1. | '''''S7x1.1r2''''' - Seven-sided spiral with a margin of 1 (omitted), with an initial radius of 2, and constant increment c = 1. When omitted, spirals initial radius is 0, c = 1. | ||
'''''iS6m1''''' - Inverted six-sided spiral with a margin of 1. | '''''iS6m1''''' - Inverted six-sided spiral with a margin of 1. | ||
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''Margin:'' usually 1 (to mimic spider-webs). This property can be (unnecessarily) employed to generate [[Equal divisions of the octave|equal-division systems]]. For example, the angle is calculated with "PI * 2 / spiralSides," so when sides are 1, 1/2, or 1/4, etc., it leaves the margin as the sole control for segment length increase. For instance, a one-sided spiral with a radius of approximately 1.05946 (twelfth root of 2) generates a 12 equal division system. From this perspective, equal-division systems can be seen as a subset of spirals. | ''Margin:'' usually 1 (to mimic spider-webs). This property can be (unnecessarily) employed to generate [[Equal divisions of the octave|equal-division systems]]. For example, the angle is calculated with "PI * 2 / spiralSides," so when sides are 1, 1/2, or 1/4, etc., it leaves the margin as the sole control for segment length increase. For instance, a one-sided spiral with a radius of approximately 1.05946 (twelfth root of 2) generates a 12 equal division system. From this perspective, equal-division systems can be seen as a subset of spirals. | ||
Initial radius: usually 0 Using a different initial radius opens another dimension of progression; however, it seems to mostly affect the initial segments, and the rest of the spiral converges quickly with its version with radius 0. | |||
''Inversion'': This parameter doesn't affect the progression but rather how the progression is treated, as string length or as frequency. | ''Inversion'': This parameter doesn't affect the progression but rather how the progression is treated, as string length or as frequency. |