Jupiter-X/Xm

Mod Matrix Not Always Working???

Mod Matrix Not Always Working???

19 Oct 2020, 18:41
Posted this in the 707 thread as well, but as the Jupiter's share the same engine thought I'd cross post it here as well.

Mod Matrix doesn't always work?

I'd first noticed this with (some of) the MFX....
would assign a source to an MFX destination (presuming there was a direct correlation between what MFX controls could be assigned to knob control and what could be made a destination in the mod matrix) set the depth effect to whatever and then...... and then nothing. nothing would happen.

This had been an issue that frequently existed with the V-Synth GT, and I just thought to myself..... "o.k., surely Roland will fix it this time down the road; at least the control seems to work when a knob is assigned to the function"

But now I seemed to have run into even more nothing.....
Used LFO 2 of partial one as a step LFO and assigned it to modulating the rate of LFO 1.... set the dept of the modulation of LFO 2 on LFO 1 to positive (whatever value).... had LFO 1 modulating the filter at a positive depth (of whatever) and at a rate of "1"... triggered a sustained note..... and then... nothing. Well, that is to say nothing but LFO 1 modulating the filter at a persistent slow unchanging rate.
Just to make sure the programmed LFO 2 steps were otherwise doing things I then set LFO 2 to modulating the filter and filter modulation immediately sprang forth as expected.


As noted, while I can't say "ALL" MFX, this also seems to frequently takes place with MFX routing, so for example, set MFX to Super Filter (leaving it in it's default HPF) and LFO 1 rate with MFX 1, then MFX 2, then MFX 3, then MFX 4 all for NOTHING. Finally Pulse Width came up and suddenly tons of modulation kicked in. Changed the MFX to Multi Mode Filter and repeated MFX 1 - 4 again and again, all nothing. Changed it to Phaser 3 and again nothing. Finally tried Ring Modulator and again, nothing.

Anyone else encountered any strange issues with the Mod Matrix?

Re: Mod Matrix Not Always Working???

19 Oct 2020, 21:15
Was able to correct the LFO Rate issue, apparently dealt with the low rate of LFO1. Made the depth of both the steps and LFO 2 over more extreme (steps around + - 50 to 72 and LFO 2 depth at 63) AND then (double) assigned LFO 2's depth to LFO 1's rate again and by the second assigning of depth getting LFO 1 to reach it's full capacity became possible. Had presumed a full LFO depth in the matrix to correspond to + - 100% modulation, but seems it's + - 50%. Was mistaking the halved response to what I expected as being nothing at all.

Still having the issue with MFX assigning in mod matrix.

Re: Mod Matrix Not Always Working???

19 Oct 2020, 21:20
On the Mfx, you did not say what parameter did you select for the mod matrix to control.

I have no problem with LFO1 controlling cutoff of super filter, with the following settings:

Partial 1
Simple VA sine wave, with no envelope action, etc.
Matrix source 1: LFO 1
Matrix dest 1-1: Mfx Ctl-1
Sens 1-1: +63
Tone Mfx
Superfilter
Asgn0: Cutoff (note the Mfx controls numbers are off by one - they go 0-3 instead of 1-4)

Then tried the following:
Partial 1
Matrix source 1: LFO 1
Matrix dest 1-1: LFO-2 Rate
Sens 1-1: +63
Matrix source 2: LFP 2
Matrix dest 2-1: Mfx Ctl-1
Sens 2-1: +63

The Mfx cutoff was modulated by both LFO-1 and LFO-2 rate controls, with some interesting behavior.

Seems to be behaving as expected.

Re: Mod Matrix Not Always Working???

20 Oct 2020, 10:50
Thanks, for the detail on what you were doing. Issue was in fact that I wasn't making giving any assignment in the MFX CTRL area of the MFX.

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