[Bug?] Poly aftertouch in split mode

Brute PolyBrute
#1

Hi everyone,

I noticed a strange behavior of the poly aftertouch mode when the PolyBrute 12 is in split timbrality.

Usually, if the aftertouch mode is set to “Poly”, the aftertouch of a single key only affects the voice of the key. But: If I switch the PolyBrute 12 to “split” timbrality, I noticed the following behavior:

  • If aftertouch is activated on a key in the lower part, aftertouch affects only the specific voice, regardless of the mode chosen. This is expected.
  • If aftertouch is activated on a key in the upper part with “poly” polyphony, aftertouch behaves the same: Only the single voice is affected. As expected.
  • But if the upper part has “mono” polyphony and aftertouch is activated on the upper part, the aftertouch affects the single voice of the upper part and all voices of the lower part in addition.

This seems wrong to me because that means the poly aftertouch does not work correctly in split mode if the upper part has “mono” polyphony. It seems to me that the PolyBrute simply deactivates poly aftertouch in “mono” polyphony because only one voice is active at the same time, so there is no need for polyphonic aftertouch. But in split mode, this means that all active voices are affected - not only the single voice of the upper part.

Is this a bug or intended? I have not found anything in the manual about it so far.

Best regards,
Stephan

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#2

Hey @stanft and thanks for posting, I’ve just had a search through the manual and can’t find anything myself either, i’m not fortunate enough to own a PB myself though so i can’t help any further other than raising this as a bug for now.
If you can, hopefully some nice PB owner will be along to enlighten us fairly soon.

HTH!

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#3

I can confirm this. It exhibits this behaviour both ways as well, i.e. if either or both parts are Mono, the PAT affects the other part. I also agree that this is not expected behaviour.

I’ve filed a bug report for this with the devs.

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