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<math>\displaystyle s = 1200\log_2 (c)</math> | <math>\displaystyle s = 1200\log_2 (c)</math> | ||
Example (just perfect fifth): log< | Example (just perfect fifth): log<sub>2</sub>(3/2) × 1200 ≈ 0.584 × 1200 ≈ 701.955 cents. | ||
If your pocket calculator has no <code>log2</code> key, but does have a <code>log</code> (log<sub>10</sub>) or <code>ln</code> (log<sub>''e''</sub>) key, you can key it this way: | If your pocket calculator has no <code>log2</code> key, but does have a <code>log</code> (log<sub>10</sub>) or <code>ln</code> (log<sub>''e''</sub>) key, you can key it this way: | ||