Low pass and high pass filter

What is a filter effect?

A filter takes an input signal and cuts off any frequencies outside of a set frequency domain determined by a cutoff frequency. In human language: it takes away big chunks of frequencies you don’t want to hear.

You can for example use them to clean up your sound when mixing by removing low-frequency rumble from a microphone recording using a high pass filter, removing high pitched noise caused by ac signal disturbance or other high-frequency signals with a low pass filter.

Another example of using a filter is by making amazing filter sweeps to add more movement to your music.

There are also several types of other cool filters that affect the output signal differently, some of which are included in other filter effects in Soundation such as Wubfilter.

Filter parameters

The Filter effect in Soundation contains both LP (Low Pass Filter) and a HP (High Pass Filter) switchable by clicking the corresponding buttons.

A LP filter is a filter that lets frequencies below the Cutoff frequency through and attenuates all frequencies above the Cutoff frequency.

A HP filter does the exact opposite of a LP filter.

The Resonance knob determines how much resonance will occur alongside attenuation, accentuating the cutoff frequency and giving a "ringing" feel to the sound.

How to use Filter in Soundation

Quick filtering [Beginner]

Using a low pass- or high pass filter is really quick and easy in Soundation.

1. 1
   Open Soundation and create a project
2. 2
   Double-click the channel to which you want to apply the Filter, this will open up the bottom panel
3. 3
   Press "+ Add effect" and select Filter in the drop-down menu
4. 4
   Pick LP or HP, adjust Cutoff and Resonance to your liking

How to automate a filter sweep [Intermediate]

1. 1
   Mark the channel you want to add the effect to by clicking it
2. 2
   Click "+ Add effect" in the bottom panel and pick Filter in the dropdown menu
3. 3
   With the channel still selected, press A to bring up the automation lane
4. 4
   Select Filter: Cutoff from the dropdown list that says Automation
5. 5
   Click on the line in the timeline to make dots controlling the cutoff frequency over time