最上段を横軸に、左端を縦軸として、互いに直交する二つの単振動を合成して得られるリサジュー図形をグラフにして並べたgifアニメーションの作品の様子です。
周波数と波形の関係がよく分かります。また、どこに意識を持ってくるかで、見え方が変わります。
Translated from Japanese by Google
This is a gif animation work in which the Lissajous figure obtained by synthesizing two simple vibrations orthogonal to each other is arranged in a graph with the top row as the horizontal axis and the left end as the vertical axis.
You can understand the relationship between frequency and waveform. Also, the appearance changes depending on where you bring your consciousness.
[reddit] Frequencies and waves