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Forum: General Discussion

Topic: Using Effect Knobs to Control Loop Length

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I'm using a Numark MixTrack Pro controller with VDJ Pro software. I've been trolling forums to try and find a way to use the effect knobs to control the length of an active loop. I know that I've run into effects on friends controllers where they're been able to activate an effect over an active loop to do so, but I can't seem to find anything about how to set this up. The goal here, obviously, is to find an easier way to half/double the length of a loop in transitions and build ups. Any info or help on this would be greatly appreciated.

Thanks,
Bass Carnival
 
Posted Mon 24 Sep 12 @ 2:56 pm
The effect knobs are encoders so you can simply map in a condition that if you have shift enabled "hot cue delete" then you can change the loop size.

query ? action if true : action if false

var '$shift' ? param_smaller 0 ? loop_select -1 : loop_select +1 : effect slider 4

This will change the fourth effect knob. You could also do a condition that if the deck is looping to automatically change the the knob to control the loop size. It uses the same principal just adding another conditional variable to it.

loop ? param_smaller 0 ? loop 50% : loop_select 200% : var '$shift' ? param_smaller 0 ? loop_select -1 : loop_select +1 : effect slider 4

that is what I would use ;-)

**if it doesn't work change "param_smaller 0" to "param_smaller 0%". If it is reversed change "param_smaller" to "param_greater"**
 
Synthet1c, can you take a peek at my post below? I have a similar question but with video transition effects.
 
Numark MixTrack Pro has an "Effect" button, to enable effects, an effect "Select" knob, to scroll through effects, and two "Control" knobs. By the "4th effect knob," did you mean the second control knob? Also, which knob/button do I map it to? I'm going to use the second line you suggested, I just need to know where to map it to.

Thanks again for your help,
Bass Carnival
 
By the way, does the "Hot Cue Delete" still need to be enabled (blinking) for the second suggestion?
 
If it blinks when deleting hot cues, then yes... Sorry I don't have a mixtrack and I'm just going off memory ;-)

I usually make all my shift buttons only activated while they are held down, that way I always know when they are active.. if you want to do that just change the mapping for your shift button to

set '$shift' while_pressed

"the above code will still work the same"
 
Okay, so the second code you gave me above... Which control do I map it to? And is it set, like you said, to only work when a loop is active, or when the Hot Cue Delete is enabled? Ideally, from what youve described, I'd like to just have one of the effect control knobs control the length of the loop automatically when a loop is active, without having to enable the hot cue delete. Is this possible?
 


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