Extended MIDI Control Change implementation

Tracker
1

Hi all!

I never used my Tracker with an external MIDI controller until today, and I noticed it unexpectedly responding to MIDI CC1 messages, which modified the filter cutoff for the selected instrument. Judging by the manual and a number of videos, it looks that only CC41 - 48 (performance mode tracks), CC51 - 62 (performance mode effect values) and CC71 - 82 (mixer levels) are officially supported. But fiddling around I quickly found that a huge number of instrument parameters for things like the envelopes, the LFOs, the effects, and (huge for me!) granular/wavetable position, can all be controlled with MIDI CC. Strangely enough, I found next to nothing online about this, except for this bug report on GitHub.

Is this extended MIDI CC implementation common knowledge that I’m just missing? Of course I have a list of all CC messages that I found the Tracker responding to, I’m curious to see if there are any more.

2 Likes
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Check the direct link to the MIDI CC Input Chart for the Tracker (and MIDI Synth Mode):
Tracker Manual - Polyend

Update: Old online manual was removed, so i’m posting an excerpt from the Tracker Manual instead:

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image1022Ă—1202 116 KB

And have fun exploring! :heart:

2 Likes
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Thanks! :+1: I never even saw this.

What I did notice is that CC16 for wavetable / granular position and CC17 for wavetable window / granular length, are missing from this list. Those especially are important to me. :slightly_smiling_face:

1 Like
4

Probably because those are currently also not really modifiable from step fx as well.
There is a wish for that by the way:

Maybe adding a wish for CC control of those values would be a good idea as well. :blush:

2 Likes
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@Wolfshoek, Could you please make a table of your findings? I’m interested in these “Secret Menu” items.