Noise has already been introduced with the "Wind" daemon. There, the noise function gives you extra realism by adding a random force field. This daemon can be used to randomly disturb particles or objects, which is particularly useful for nebula-like effects and simulating air turbulences. "Noise Field" can be bounded and the bounding volume is a sphere.
Affect
Particles can be affected in two ways: either by “Force” or “Velocity”. The first option applies an external force, resulting in an acceleration, while the second only modifies the velocities of the particles without introducing an additional acceleration. “Affect” has no influence on rigid or soft bodies.
Strength
Here you can adjust the intensity of the noise field
Space scale
This value controls the overall size or frequency of the noise in space. Be aware that high scale values lead to more noise.
Time scale
The mode of operation is actually the same as with “Space scale”, but here the noise changes during simulation time. It is also possible to easily animate the noise scale with this parameter: a value of 0 means there is no animation at all, 1.0 represents the simulation time.
Bounded
The daemon’s influence can be limited with this function. A bounded noise field is restricted to a sphere, which is displayed in the viewport around the node’s centre. The daemon's bounding box can be distorted with the “Shear” parameter under “Node”, but this only affects the visual representation in the viewport. The daemon's scope is not affected.