S/C modes in Calf Sidechain compressor

[Monospace]

I understand they decide what F1 and F2 freq and levels do: highpass, lowpass, lowshelf, hishelf, bandpass.
However, there are 10 sidechain modes. What does each mode correlate to?
I ask because I want F1 to lowshelf and F2 to highself on my sidechain, but due to lack of any sensible non-numerical options I don't know what to do.

[musikbear]

I understand they decide what F1 and F2 freq and levels do: highpass, lowpass, lowshelf, hishelf, bandpass.
However, there are 10 sidechain modes. What does each mode correlate to?
I ask because I want F1 to lowshelf and F2 to highself on my sidechain, but due to lack of any sensible non-numerical options I don't know what to do.

I believe i spend most of a day trying to figure out what goes on. Eventually i went with the empiric descission that it just need to sound good..
In my notes i have this

Code: Select all

Input                     .96
treshold                  .98 (low for hard SC
ratio                     3.8 VIP!! (high for hard SC
attack                    .066
rel                       .36
MG                        1.96
Knee                      6.2
Det                       0
SL                        0
SC mode                   3
F1 freq                   202
F2 freq                   2813
F1 lev                    14
F2 lev                    0.6
s/c rout                  0
s/c lev                   <connected to peak-ctrl>

Is that useable?

[Monospace]

OK.
So this means S/C mode 3 is lowshelf and hishelf for F1 and F2 respectively?

[musikbear]

OK.
So this means S/C mode 3 is lowshelf and hishelf for F1 and F2 respectively?

idk :p

[Gps]

Maybe we can find some info here:

https://calf-studio-gear.org/doc/

These docs are about the newer version of the plugins though, and have a gui.
But don't differ much as far as I understand things.

[Monospace]

Yes, GPS. I took a look at that.
That's how I reached the conclusion that S/C mode will control whether the frequencies F1 and F2 are band pass, shelf, cutoff, or off.
Except, we have 10 modes: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.
I can't tell which does what.
Assuming you don't need to worry about "Off" because level=0 does that, you have then three modes per frequency to worry about, and two frequency points. So you have 3^2 modes total. One with hishelf-loshelf, one with hishelf-band, one with band-band, one with cutoff-band, etc etc. So nine total modes. Assuming we add another mode, probably off-off for the sake of it (I can't for the life of me be sure what those values do!) we get 10.
We still can't tell which setting corresponds to which number. That's what I'm trying to do.

[Gps]

I love the calf plugins, but its very frustrating there are no manuals.

Wonder if we should try to talk to calf ? But I doubt they are willing to help with the older prugins.

[Monospace]

Wait. It's a bit confusing.
The site lists both sidechain mode AND the red/blue light implying bandpass/cutoff/shelving. Whereas, the LMMS plugin has only sidechain mode.
I was wrong.
So what we need to do then would be to either run the LADSPA plugin itself and list in which order what each S/C mode does, or find a demo of someone running the LADSPA plugin and showing each S/C mode.

[Monospace]

Alright, I looked for a tute, and these are my approximates on what the modes represent:

Code: Select all

SC no |\tMode name\t|\tFunction
0\tWideboard\t\tF1 off F2 off
1\tDeesser wide\t\tF2 bell F2 HP
2\tDeesser split\t\tF1 off F2 HP
3\tDerumbler Wide\t\tF1 LP F2 bell
4\tDerumbler split\t\tF1 LP F2 off
5\tWeighted #1\t\tF1 shelf F2 shelf
6\tWeighted #2\t\tF1 shelf F2 Bell
7\tWeighted #3\t\tF1 Bell F2 shelf
8\tBandpass #1\t\tF1 BP F2 off
9\tBandpass #2\t\tF1 HP F2 LP

Should work.

[musikbear]

Alright, I looked for a tute, and these are my approximates on what the modes represent:

Code: Select all

SC no |\tMode name\t|\tFunction
0\tWideboard\t\tF1 off F2 off
1\tDeesser wide\t\tF2 bell F2 HP
2\tDeesser split\t\tF1 off F2 HP
3\tDerumbler Wide\t\tF1 LP F2 bell
4\tDerumbler split\t\tF1 LP F2 off
5\tWeighted #1\t\tF1 shelf F2 shelf
6\tWeighted #2\t\tF1 shelf F2 Bell
7\tWeighted #3\t\tF1 Bell F2 shelf
8\tBandpass #1\t\tF1 BP F2 off
9\tBandpass #2\t\tF1 HP F2 LP

Should work.

Excellent find!
Imo this should be added to the git-book!