Odd knob behavior.

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twelsch42
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Odd knob behavior.

Post by twelsch42 » Fri Jan 30, 2015 3:27 am

Looking at the standalone editor I get a visual representation of my knobs when I move them. I can see and hear that some of them are not matching up on a 1:1 basis. For instance my VCO 1 LVL & VCO 2 LVL only use about 50% of the physical knob-turn to show 100% of the turn on the editor. What I'm seeing is also what I'm hearing, past half-way the knob doesn't increase the volume. I get the same anomaly on other knobs like AmpDECAY only uses about 30% of the physical knob to reach 100% of it's affect. Knobs like the CUTOFF and RES and VCO2 FREQ all perform as expected, audibly and visually within the editor.

Any ideas?

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bichuelo
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Re: Odd knob behavior.

Post by bichuelo » Fri Jan 30, 2015 10:13 am

Have you tried a pot calibration routine yet?

http://forum.moogmusic.com/viewtopic.ph ... ot#p116840
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twelsch42
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Re: Odd knob behavior.

Post by twelsch42 » Fri Jan 30, 2015 12:42 pm

Thanks for the suggestion. I just tried the knob calibration routine and it did not fix my problem.

Any other ideas?

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MC
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Re: Odd knob behavior.

Post by MC » Fri Jan 30, 2015 11:55 pm

I believe the editor send 14-bit NRPNs, which is two messages MSB and LSB. Is one of them missing? You don't have 7-bit controllers turned on the Minitaur or the Editor?
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till
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Re: Odd knob behavior.

Post by till » Sun Mar 01, 2015 9:45 am

MC wrote:I believe the editor send 14-bit NRPNs, which is two messages MSB and LSB. Is one of them missing? You don't have 7-bit controllers turned on the Minitaur or the Editor?
The MSB and LSB do not each cover one half of the parameter range, as then the bit deepth would be only 2x 128 available values = 256 values = 8 bit.
It is rather MSB doing the higher 7 bits and the LSB doing the lower 7 bits. So the bit deepth is 14 bit = 2^14 = 16384 different values.

Therefor:
The MSB is covering about 99.2% of the range.
The LSB is just filling up the values in between and from value 16256 (binary 1111111 0000000) to 16384 (binary: 1111111 1111111).
keep on turning these Moog knobs

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Raptcher
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Re: Odd knob behavior.

Post by Raptcher » Sun Mar 08, 2015 6:14 pm

Wanted to bump this as I am having a rather weird pot problem.

My VCO 2 Freq is controlled by my FF pot. I get no response from the actual VCO 2 Feq pot but I can change it in the stand alone editor. In addition as I turn the filter frequency pot up, it changes the tuning of VCO 2.

It seems they, FF and VCO 2 Freq, got tied together somehow and I cannot figure out how. Just bumped up to 2.1 Firm and 3 Editor. No problems prior to this.

twelsch42
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Re: Odd knob behavior.

Post by twelsch42 » Mon Mar 09, 2015 1:44 pm

I have not figured out my issue yet. Haven't had the time to call support. If I do figure out my issue, I'll be sure to report back.

twelsch42
Posts: 26
Joined: Tue Apr 30, 2013 12:01 pm

Re: Odd knob behavior.

Post by twelsch42 » Sun Mar 29, 2015 1:01 pm

Well I tried running the knob calibration again and everything is working! I may have been trying to send the knob-sysex-calibration in bootloader mode when I tried to resolve this unsuccessfully before.

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