When controlling the track DSP filter cutoff from an external source, is there any way to prevent it from going below (or above) a certain value?
Let’s say I don’t want the filter to go below 0.48 kHz. This is easy to achieve when using an LFO by changing the offset value, but when doing it realtime I haven’t found an easy way.
By “external source” I guess you mean a MIDI controller?
It’s very easy to set the controller range in the MIDI mapping options:
3778
Alternatively, you could control the filter frequency with a Hydra and set the limits that way, and then map your controller to the Hydra instead (whether it’s MIDI or another meta device):