# Sandbox.Utility.Noise.FbmVector

```csharp
static Vector3 FbmVector(int octaves, float x, float y = 0)
```

Fractional Brownian Motion noise, a.k.a. Fractal Perlin noise.

### Parameters

- `octaves` (`int`): Number of octaves for the noise. Higher values are slower but produce more detailed results. 3 is a good starting point.
- `x` (`float`): Input on the X axis.
- `y` (`float`), default `0`: Input on the Y axis.

### Returns

`Vector3`

Declared in [Sandbox.Utility.Noise](/api/Sandbox.Utility.Noise).
Assembly: `Sandbox.System`.