純正調です。 \[ \operatorname{tone}\left(440\cdot\frac{24}{40},0.5\right) \] \[ \operatorname{tone}\left(440\cdot\frac{24}{40}\cdot\frac{27}{24},0.5\right) \] \[ \operatorname{tone}\left(440\cdot\frac{24}{40}\cdot\frac{30}{24},0.7\right) \] \[ \operatorname{tone}\left(440\cdot\frac{24}{40}\cdot\frac{32}{24},0.5\right) \] \[ \operatorname{tone}\left(440\cdot\frac{24}{40}\cdot\frac{36}{24},0.9\right) \] \[ \operatorname{tone}\left(440\cdot\frac{24}{40}\cdot\frac{40}{24},1\right) \] \[ \operatorname{tone}\left(440\cdot\frac{24}{40}\cdot\frac{45}{24},0.5\right) \] \[ \operatorname{tone}\left(440\cdot\frac{24}{40}\cdot\frac{48}{24},0.5\right) \]
　上から順にハ長調の ドレミフ_ァソラシド になっていますので、音階を弾いてください。ドとミとソのボタンを一緒に押すと、ドミソの和音が聞こえます。

　次は、音階の自動演奏です。a をアクションさせて上げたり下げたりしてください。。
\[ \left\{f\left(a\right)=0:\operatorname{tone}\left(440\cdot\frac{24}{40}\cdot\frac{24}{24},1\right)\right\} \] \[ \left\{f\left(a\right)=1:\operatorname{tone}\left(440\cdot\frac{24}{40}\cdot\frac{27}{24},0.5\right)\right\} \] \[ \left\{f\left(a\right)=2:\operatorname{tone}\left(440\cdot\frac{24}{40}\cdot\frac{30}{24},0.7\right)\right\} \] \[ \left\{f\left(a\right)=3:\operatorname{tone}\left(440\cdot\frac{24}{40}\cdot\frac{32}{24},0.5\right)\right\} \] \[ \left\{f\left(a\right)=4:\operatorname{tone}\left(440\cdot\frac{24}{40}\cdot\frac{36}{24},0.9\right)\right\} \] \[ \left\{f\left(a\right)=5:\operatorname{tone}\left(440\cdot\frac{24}{40}\cdot\frac{40}{24},1\right)\right\} \] \[ \left\{f\left(a\right)=6:\operatorname{tone}\left(440\cdot\frac{24}{40}\cdot\frac{45}{24},0.5\right)\right\} \] \[ \left\{f\left(a\right)=7:\operatorname{tone}\left(440\cdot\frac{24}{40}\cdot\frac{48}{24},0.5\right)\right\} \] \[ f\left(x\right)=\operatorname{floor}\left(x\right)\ \left\{\ 0\le x\le8\right\} \] \[ a=0　　　※ スライダーを 0 〜 8 に設定 \] \[ P=\left(a,f\left(a\right)\right) \] 　Latex コピペ用テキストエリア（ Ctrl + v で貼り付け ）：

\operatorname{tone}\left(440\cdot\frac{24}{40},0.5\right) \operatorname{tone}\left(440\cdot\frac{24}{40}\cdot\frac{27}{24},0.5\right) \operatorname{tone}\left(440\cdot\frac{24}{40}\cdot\frac{30}{24},0.7\right) \operatorname{tone}\left(440\cdot\frac{24}{40}\cdot\frac{32}{24},0.5\right) \operatorname{tone}\left(440\cdot\frac{24}{40}\cdot\frac{36}{24},0.9\right) \operatorname{tone}\left(440\cdot\frac{24}{40}\cdot\frac{40}{24},1\right) \operatorname{tone}\left(440\cdot\frac{24}{40}\cdot\frac{45}{24},0.5\right) \operatorname{tone}\left(440\cdot\frac{24}{40}\cdot\frac{48}{24},0.5\right) ############################################################################### \left\{f\left(a\right)=0:\operatorname{tone}\left(440\cdot\frac{24}{40}\cdot\frac{24}{24},1\right)\right\} \left\{f\left(a\right)=1:\operatorname{tone}\left(440\cdot\frac{24}{40}\cdot\frac{27}{24},0.5\right)\right\} \left\{f\left(a\right)=2:\operatorname{tone}\left(440\cdot\frac{24}{40}\cdot\frac{30}{24},0.7\right)\right\} \left\{f\left(a\right)=3:\operatorname{tone}\left(440\cdot\frac{24}{40}\cdot\frac{32}{24},0.5\right)\right\} \left\{f\left(a\right)=4:\operatorname{tone}\left(440\cdot\frac{24}{40}\cdot\frac{36}{24},0.9\right)\right\} \left\{f\left(a\right)=5:\operatorname{tone}\left(440\cdot\frac{24}{40}\cdot\frac{40}{24},1\right)\right\} \left\{f\left(a\right)=6:\operatorname{tone}\left(440\cdot\frac{24}{40}\cdot\frac{45}{24},0.5\right)\right\} \left\{f\left(a\right)=7:\operatorname{tone}\left(440\cdot\frac{24}{40}\cdot\frac{48}{24},0.5\right)\right\} f\left(x\right)=\operatorname{floor}\left(x\right)\ \left\{\ 0\le x\le8\right\} a=0　　　※ スライダーを 0 〜 8 に設定 P=\left(a,f\left(a\right)\right)