ofajen said:
Glen, I figured there would be at least one plug-in already out there to do this, but didn't know which one. Thanks for the tip! I'll see if Nichol's Dynamizer is something I may want to use now that I'm doing more stuff in the digital domain.
I have Neodynium, which as far as I can tell is the same thing, it's just a different skin (Roger Nichols bought out Elemental Audio a couple of months ago and re-skinned and re-named their software [and, unfortunately applied upward expansion on the pricing while he was at it

]) While I frankly don't use upward compression all that much myself except for special fixes, the plug is quite nice IMHO. The sound is farily neutral and the flexability and layout are both very nice. It actually has four "bands" of up/down/both compression, but they are vertically stacked bands based upon amplitude, not horizontal bands based upon frequency.
I'd also point out that just about any graphical dynamics processor plug can do it also. These are the kinds of plugs that typically come standard with most NLEs that are in the form of an X/Y slope (X=input amplitude, Y=output amplitude) that you can bend into different curves of compression and expansion.
For ecktronic, sweets and the rest, perhaps the easiest way to think about upward and downward compression and expansion is to cener it all around the threshold setting:
Upward compression = pulling peaks below the threshold up towards the threshold level.
Upward expansion = pushing peaks already above the threshold even further above the threshold.
Dowwnard compression = pulling peaks above the threshold down closer to the threshold ("standard" compression).
Downward expansion = pushing peaks already below the threshold even further below the threshold.
Compression always means reducing the dynamic range. Expansion always means increasing the dynamic range.
It is possible (with the right hardware or software) to do "upward" and "downward" at the same time. In terms of compression, this means "pinching" all peaks closer to the threshold level, whether they are above or below it. In terms of expansion, this means "pushing away" all peaks from the threshold, whether above or below it.
G.