Adds a high-pass filter to an audio bus. A "high-pass" filter attenuates frequencies lower than [member AudioEffectFilter.cutoff_hz] and allows higher frequencies to pass unchanged. This filter can be used to remove "strength" from a sound, and give low-end space for basses and impact sounds. $DOCS_URL/tutorials/audio/audio_buses.html $DOCS_URL/tutorials/audio/audio_effects.html