Standard resonant lowpass filter with 12dB/octave rolloff. Frequencies below the cutoff pass through; frequencies above it are attenuated.
In other words, this Node can be used to to create muffled audio, where only the lower frequencies are audible, and the rest are attenuated/muted (e.g. similarly to the sound of a loud disco, as heard from outside on the street).
Audio and Control lines (visualized with blue and purple, respectively) are both analogous to an analog signal.They can be used interchangeably, and, for example, an Audio output (blue) can be connected to a Control input (purple), or vice-versa.
This Node has exactly 2 samples of latency (equals ~0.0045 milliseconds at 44.1 kHz).