# Perlin Noise

A satisfying Perlin motion usually involves low-frequency high-amplitude noise (a broad motion) combined with high-frequency low-amplitude noise (detailed motion). One without the other doesn't feel organic.

This is why Perlin motion in ShakeFX is defined using "octaves". Every octave is an individual Perlin noise, and their results are summed up to produce the final output.

The octaves can be tuned until the result feels just right. In this example there's even a third mid-range octave:

<figure><img src="/files/aQ4fMUEhZtcRr3Myti3M" alt="" width="375"><figcaption></figcaption></figure>


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