Delta-rational chord: Difference between revisions

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Measuring the error of an approximation: Add section about partially-DR error.
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Suppose that the target delta signature is
Suppose that the target delta signature is


<math>+\! \delta_{11} +\! \delta_{12} +\! \cdots +\! \delta_{1n_1} +\!? +\! \delta_{21} +\! \delta_{22} +\! \cdots +\! \delta_{2n_2} +\!? \ ... +\!? +\!\delta_{m1} +\! \delta_{m2} +\! \cdots +\! \delta_{mn_m}.</math>
<math>+\! \delta_{11} +\! \delta_{12} +\! \cdots +\! \delta_{1n_1} +\!? +\! \delta_{21} +\! \delta_{22} +\! \cdots +\! \delta_{2n_2} +\!? \ \cdots +\!? +\!\delta_{m1} +\! \delta_{m2} +\! \cdots +\! \delta_{mn_m}.</math>


Writing ''a:b:c:...'' as [''a'', ''b'', ''c'', ...] for readability, the chord to be approximated is
Writing ''a:b:c:...'' as [''a'', ''b'', ''c'', ...] for readability, the chord to be approximated is