[LAD] Rate of change damping in digital mixer controls

Hi list, It's been reported that rapidly tweaking a MIDI control connected to an Ecasound volume effect causes a click. I tried sending various volume change commands, and could hear a click for even 3 dB steps, If I understand correctly, this click is the consequence of an unfiltered step in the waveform that carries a lot of harmonics. So I'm wondering how digital mixers and DAWs deal with this. Do they provide rate-of-change damping just for pan and volume faders, or perhaps some generalized rate damping on all parameters? Do special plugins provide this damping, or a filter on the MIDI/OSC inputs? Thanks for any enlightenment on this subject. Regards, Joel -- Joel Roth