Kontakt Scripting - Best way to create Wet / Dry FX?

TVCulture

Hey! First time poster. Apologies if this has been asking before, I did look!

I'm making a Kontakt instrument with a few different FX dry/web knobs such as reverb, phaser etc. I have the knob mapped to $ENGINE_PAR_SEND_EFFECT_OUTPUT_GAIN and $ENGINE_PAR_SEND_EFFECT_DRY_LEVEL on the FX, reducing and increasing the appropriate dry or wet volume as needed. However I've noticed the volume seems quite inconsistent. While it sounds fine at 100% dry or 100% wet, I'm finding at 50% of both, it generally sounds quieter, almost as if the volume curve is exponential for each with the movement of the knob... if that makes sense?

on ui_control($Verb)

set_engine_par($ENGINE_PAR_SEND_EFFECT_OUTPUT_GAIN, $Verb, -1, 0, 1)

set_engine_par($ENGINE_PAR_SEND_EFFECT_DRY_LEVEL, 500000 - $Verb, -1, 0, 

Help much appreciated, sorry if this is a known issue, I am a noob

Kaiwan_NI

@EvilDragon Pretty sure you know an answer to this? 🙂

EvilDragon

Old forum to the rescue!

https://www.native-instruments.com/forum/threads/dry-wet-control-of-inserts.348321/#post-1752579

TVCulture

Thanks both that's so helpful :) I have it set up.

As a follow up question if possible, I noticed that Retro Machines MK2 seems to have quite a smooth setup for FX (Reverb and Echo) but for the life of me I can't figure out exactly how it works. There seems to be something automating the send levels of the effects, based on the knob position... as if when the key is triggered, the FX send level on the source module turns to zero. It doesn't seem to be modulated by any ADSRs I can see

(A). Is this superior in some way to automating the dry/wet as discussed above?

(B). IF SO - would someone mind explaining exactly how the FX work in Retro machines?

Thank you - again apologies for the noob question, I genuinely spent a while trying to find an article that would answer it but haven't found anything as of yet. Is it Midi CC related?

test189278367

Hey guys, unfortunately the link to the old forum posts directs you to the native instrument community website and not to the old forum... does anyone know a way how to still access the old forum posts?

LucidStorm

Hi, I am also trying to figure this out. I am very new to KSP or any scripting, I've just started creating an instrument for the first time about a week ago, so apologies if I'm missing something obvious.

If I have a convolution reverb, and want a single knob for wet/dry control, how would i go about keeping the level consistent throughout the whole sweep. I'm experiencing the same thing as the OP, at 0% or 100%, the level seems fine, but its significantly quieter at 50%.

This is what I have in the script editor:

  on init
   declare ui_knob $tele (0,396484,1)
   make_persistent ($tele)
   move_control_px ($tele,690,320)
   set_text ($tele,"Filter")
end on
on ui_control ($tele)

   set_engine_par($ENGINE_PAR_SEND_EFFECT_OUTPUT_GAIN,$tele,-1,2,1)
   set_engine_par($ENGINE_PAR_SEND_EFFECT_DRY_LEVEL,396484 - $tele,-1,2,1)

end on

I was able to find the page linked on wayback machine , and at the end of the thread EvilDragon posted this code which i think would address this problem:

on init
    declare pers ui_slider fatknob (583000, 1000000)
    declare ~gain
end on

on ui_control (fatknob)
    gain := 367000.0 + (int_to_real(fatknob - 583000) * 0.46522782)
    set_engine_par(ENGINE_PAR_TP_GAIN, fatknob, -1, 2, NI_INSERT_BUS)
    set_engine_par(ENGINE_PAR_INSERT_EFFECT_OUTPUT_GAIN, real_to_int(gain), -1, 2, NI_INSERT_BUS)
end on

I'm not sure if wayback machine changed the text for some reason, or if I'm just missing something. Kontakt doesnt seem to recognize "pers" in this example:

declare pers ui_slider fatknob

Also shouldn't "fatknob" be "$fatknob"?

Appreciate any info on what to do here. Thanks.

corbo-billy

You must write:

declare ui_slider $fatknob (O, 1000000)

LucidStorm

Ok, thanks. So I have modified the code in a test project to the following:

on init

   declare ui_slider $fatknob (0,1000000)
   make_persistent ($fatknob)
   declare ~gain

end on

on ui_control ($fatknob)
   gain := 367000.0 + (int_to_real($fatknob - 583000) * 0.46522782)
   set_engine_par($ENGINE_PAR_TP_GAIN, $fatknob, -1,0,NI_INSERT_BUS)
   set_engine_par($ENGINE_PAR_INSERT_EFFECT_OUTPUT_GAIN, real_to_int(gain), -1,0,NI_INSERT_BUS)

end on

I am not sure if i modified it correctly. I changed (-1,2,NI_INSERT_BUS) to (-1,0,NI_INSERT_BUS) on the two "set_engine_par" lines because the effect is in the first slot (0).

I am getting an "end on" error with this line:

 gain := 367000.0 + (int_to_real($fatknob - 583000) * 0.46522782)

But it is as I pasted here with the "end on" line so I'm not sure that that's the problem.

Does "declare ~gain" make sense here? I haven't been able to find anything about this in the manual or elsewhere online.

LucidStorm

Alright so I finally have it figured out. First of all I didn't realize that code was intended for sublimeKSP which i hadn't messed with until now, I realize now there are several things i did not grasp at all that I now have a slight understanding of, lol. With a lot of trial and error and some help from AI i figured out that having dry gain use an exponential function while having wet gain use a logarithmic function resulted in a smooth sweep.

Here is my updated compiled code:

on init
 declare ui_knob $tele(0,396482,1)
 make_persistent($tele)
 move_control_px($tele,690,320)
 declare ~gain
 declare ~wet_gain
end on

on ui_control($tele)
 ~gain := int_to_real(396482)*(1.0-((exp(5.0*int_to_real($tele)/int_to_real(396482))-1.0)/(exp(5.0)-1.0)))
 set_engine_par($ENGINE_PAR_SEND_EFFECT_DRY_LEVEL,real_to_int(~gain),-1,2,1)
 ~wet_gain := int_to_real(396482)*log(int_to_real($tele)+1.0)/log(int_to_real(396482)+1.0)
 set_engine_par($ENGINE_PAR_SEND_EFFECT_OUTPUT_GAIN,real_to_int(~wet_gain),-1,2,1)
end on

TheBassGuru

https://community.native-instruments.com/discussion/comment/60989#Comment_60989

Hi. Ive tried this but it's not working as expected. The Wet jumps up immediately and the dry jumps down at the end of travel.

I've changed the knob to a slider. The knob version works better at the end of travel, but at the beggining it still jumps to-9 right at the start.

KSP Issue.txt