I’ve been doing some tests to see how the different methods we’ve compiled in this thread affect the response of some plugins.
I have recorded some chords with the guitar using a distorted amp and a mic (distorted sound “finished”), and in another track the guitar directly through a D.I., to apply later an amplification simulation (Guitarix in .lv2 plugin format).
My conclusions (when working with pre-fader plugins)
Methods that affect the response of the plugins, since the volume up/down occurs before the plugins:
-Region gain curve automation
Methods that do not affect the response of the pre-fader plugins, since the volume variation occurs after the plugins:
-Fader automation via VCA
-Cut and separate to another track the part to increase/decrease volume
-Insert an amp plugin (in my case I tried “a-Amplifier”) after all pre-fader plugins, but before the fader (that is, the last pre-fader plugin), and automate the “gain” parameter. (This method was not mentioned before!)
On the track recorded with the amp + mic (sound “finished”) it doesn’t matter much which method is used, because it doesn’t have plugins. In all cases the programmed volume increase/decrease is produced (that’s why it worked well for me to automate the “trim”)
By the way, since I have named Guitarix in .lv2 format, in my case they do not have their corresponding GUI. To edit them I have to right click on the plugin and select “edit with generic controls” in the menu. This is a plugin issue or an Ardour issue?
I don’t care much about it, because it can be edited with the generic controls, and I hardly use it either…