Moog Music Forum

Hi all,

as per title is ther a way to reverse the KB Tracking at all.

Cheers,
Glyn.

Assuming this is a Sub 37, you can use one of the MOD sections:

- press the CONTROLLERS button to bring up the menu, go to the MOD x EDIT sub menu and set PGM SRC to KB TRACK
- set the SOURCE switch of the MOD section is in the F.EG/PGM position
- now use the AMT knobs in the counter clockwise direction for reverse keyboard tracking

Hi Glynbo,

This is from a post back in 2014, specifically about Reverse Keyboard Tracking of Filter Cutoff:

psynthetic wrote:Is there some way I can invert the keyboard tracking on the filter? I'd like the cutoff to get higher as the pitch gets lower.

Hi psynthetic,
It can be done, but you'll need to use one of your MODs.

Make the MOD's SOURCE = OSC 1 PCH

Set the actual KB TRACK knob to 0 so it's not fighting against your MOD.

Set that MOD's FILTER AMT to a significant negative value.

Et voila! Negative keyboard filter tracking.

{Glynbo, let me know if you want a specific parameter modulated by reverse Keyboard Tracking.
Some, like Pitch, are trickier.}

_DemonDan_'s method is not just straight keyboard tracking. The OSC x PCH source is not the same as the KB TRACK source; it changes with the current pitch of the oscillators (affected by all of osc range, pitch wheel, pitch modulations and keyboard), whereas KB TRACK follows only the keyboard, hence it being available as a mod source just for this purpose.

DrJustice wrote:_DemonDan_'s method is not just straight keyboard tracking. The OSC x PCH source is not the same as the KB TRACK source; it changes with the current pitch of the oscillators (affected by all of osc range, pitch wheel, pitch modulations and keyboard), whereas KB TRACK follows only the keyboard, hence it being available as a mod source just for this purpose.

Hi DrJustice,

You are completely correct. (I'm wondering if the KB TRACK source wasn't initially on the MOD SOURCE list during the pre-Version 1.0 prototyping phase. The thing that makes me wonder that is that KB TRACK is at the very end of the list.) But, either way, good call

There are still some times when OSC 1 PCH may be the better choice as it is a far more powerful source. KB TRACK isn't even strong enough to completely nullify the permanent 100%-keyboard-tracking-to-pitch connection. It actually takes both MODS 1+2, each with KB TRACK as the SOURCE, with both of the PITCH AMT knobs turned fully counterclockwise to have OSC 1 and OSC 2 NOT track the keyboard at all, such that all keys produce the same pitch. (This is crucial for the "Life's Been Good To Me So Far" synth trick.)

If Glynbo's question was actually about 100% reversing the Key Tracking of Pitch (like Joe Zawinul of Weather Report used to do to make his synth solos "fresh"), then there's only one way I've found to do this:

You have to turn OSC 1 Off at the MIXER and only have OSC 2 sounding. Then, disconnect OSC 2 from the keyboard by lighting the DUO MODE button and unlighting both of the LO and HI LEDs of KB CTRL.

With OSC 2 completely disconnected from the keyboard, you'll find that you can now use both of the MODs with SOURCE = KB TRACK, and both PITCH AMT knobs fully counterclockwise to achieve an "in-tune" upside down scale.

Hi all, thanks for all the info, I shall be trying it tonight.

Many thanks,
Glyn.

PS, sorry, forgot to say its a Sub 37.