log 2 ( 1000 440 ) Oktaven ≈ 1 , 18 Oktaven ≈ 14 Halbtöne {\displaystyle {}\log _{2}{\biggl (}{\frac {1000}{440}}{\biggr )}{\mbox{ Oktaven}}\approx 1{,}18{\mbox{ Oktaven}}\approx 14{\mbox{ Halbtöne}}}