The combination of AutomationA tool that allows you to change the variable parameters of a sound over time.Automation and a FilterA filter changes the frequency makeup of a sound by making parts of it weaker. Filters allow you to focus on parts of a sound that are of interest to you, or to take away parts that you don't like.Filter, creating a dynamic sound gesture.
This is an example of a filter sweep. You can hear the filter changing over time.
As the filter moves it shifts the focus of the sound that we hear.
Filter sweeps are often used to enhance a sense of building energy within a piece.
You hear them often in both pop music and sound based music.