Help please! -64/+64 sweep on LFO isn't enough!

[WhitePony64]

Hi all, this is my first time posting on this forum (or any forum that matter) so I'm not sure if I'm posting this in the right place or whatever but I hope you can forgive any n00bness of mine.

I'm reverse engineering some patches from my Korg R3 onto my G2 Engine with a little help from Blue Cat Audio's Frequency Analysis Multi plugin.

In the patch I'm copying there is LFO2 set at 1.88Hz (which I matched on the G2 with an LFO at 112 BPM). This LFO (LFO2) is modulating the amplitude of a sine wave. LFO2 is also having it's rate modulated by LFO1 (0.05Hz, 19.8s on the G2). The problem I'm facing is that the sidebands created on the G2 don't match the sidebands on the Korg R3 and sound inharmonic and wrong for what I'm trying to achieve.

I can achieve the right sidebands by having LFO2 at 149 BPM instead of 112 BPM but then that throws out the speed of the rest of the patch (I really need to get the sound as accurate as possible!).

Is there any way on the G2 I can speed up LFO2 with LFO1 a different way than the rate inputs as the -64/+64 swing isn't enough. Is there a way to link LFO rates to MIDI channels/CC#s or morphs groups? Or any other ways? Any help would be super appreciated.

Thank you!

[ian-s]

0.05Hz is 20sec. The Sub range on the lfo's has that exactly. If you need fine control, just patch your +-/64 through a mixer, set the mixer level to adjust range.
Look forward to hearing the patch when you are done

[WhitePony64]

Hi, thanks for the reply!

I can't believe I overlooked 20s in the sub range! It has improved the overall contour of the LFO speed on the G2 when compared to the Korg R3 which is awesome but I still have the same problem regarding the maximum speed of the LFO (and the side bands it creates).

I can't use a mixer module to attenuate LFO1's signal as the problem is not too much modulation but too little. I need LFO2's rate to increase past the point it is when LFO1 (the LFO modulating LFO2's rate) reaches +64, however this is not possible through the rate input on LFO2 as it can't receive any value higher than +64 from a bipolar signal (any additional signal I patch in just makes it reach +64 faster but never surpasses that value).

I can create the right sidebands by manually changing the rate of LFO2 (from 112 BPM to 149 BPM) with my mouse as LFO1 reaches it's peak but this isn't really a solution. I don't really know how the MIDI modules in the G2 act within a patch and have tried to use them but to no avail. Do you know if it's possible to use MIDI and/or morph groups to increase the speed of LFO2 relative to LFO1 as if I was turning the knob with my mouse?

If there is no solution to this I suppose I'll just settle for making LFO2's rate 149 BPM but if anyone can think of a way around my predicament that would be awesome!

When I'm finished I can post a short clip of both the original R3 patch and the G2s copy for comparison.

Thanks!

[blue hell]

[WhitePony64]

Thanks Blue Hell, I tried this before I posted but it didn't work and I still can't get it to work so I must be doing something wrong.

I have LFO1's output patched to the blue value input on a control send module.

I have the Ctrl selector at 104 and the channel selector at "This".

I have a morph group assigned to MIDI CC104.

I have assigned LFO2's rate knob to the appropriate morph group and set a broad range for modulation.

I must be missing something because it still isn't working. The only way I can get LFO2's rate to increase is by manually turning the morph group knob. Not even playing with the value knob on the Ctrl Send module changes anything.

Any ideas?

Thanks.

[ian-s]

[ian-s]

here is the sample, only works in slot A

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sample-midimod.pch2
Description:		Download
Filename:	sample-midimod.pch2
Filesize:	1.11 KB
Downloaded:	4220 Time(s)

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[WhitePony64]

Cool, thank you both for your help!

I'll play around with that patch for a bit.

Cheers!

[blue hell]