Back in the day when I used Cubase, I had a plugin called Sonalksis TBK1. It was a simple Filter knob, but it swept all the way from no sound through to the full sound either as a high pass down, or low pass up. Even when just using a 12db curve.
Here's a video of it being used:
I want to recreate this using just native Reason devices. My best try at the moment has been routing audio through a Thor and then using Filter 3 to sweep, but even at the most filtered LP12 there is still some low rumbling, and with the HP12 there is still some high bits getting through. Obviously the TBK1 is doing something else to filter the sound so an LP12 and HP12 can be faded in from nothing.
Because the Sonalksis TBK1 used to make no sound when the knob was turned all the way, it made for a nicer alternative to an automated volume fader for bringing parts in gently; instead introducing them with a filter envelope.
Can some Combinator genius help me replicate the TBK filter with a single knob that goes from no sound, to the full sound via a gentle sweep with no resonance?
Many thanks!