ive got my microbrute CV gate out + pitch out connected to my minitaur and the mintiaur is way out of tune here, impossible to fix with fine tune, done caliberations & reset
I’m pretty sure the Microbrute, though V/Oct, outputs CV from 0 to 10v, whereas the Minitaur only accepts CV from 0 to 5v. Perhaps running it through an attenuator would help? I’m pretty new to CV though, so this could be totally wrong. (Is the voltage difference more a concern with LFOs and other CV as opposed to pitch? Would the difference in CV range mean that the Minitaur is only able to accept pitch control from C0 to C5?)
When you say that you calibrated the Minitaur, are you talking about the procedure where by you provide reference voltage into Pitch CV input then execute a SysEx send of a given command?
wordsdrawnigh: :> micromanual specs says : The Gate is a standard positive going 0-5V gate. / The CV inputs and outputs are standard 1V per octave.
so should be no probs there
“note calibration” only tunes the oscillators relative to MIDI notes.
“pitch cv reset” actually does the opposite of “calibrating” the Pitch CV input - rather, it resets it to some default settings that are close but not exact. This function will be improved in an upcoming firmware release.
What you really want, however, is two additional sysex commands: “external pitch 1V cal” and “external pitch 4V cal”. These two files actually calibrate the external pitch CV input… the idea is, you play octave 1 on your CV controller, record that as the “1V” calibration point.. then play octave 4 on your CV controller and record that as the “4V” calibration point.
In the case of your Brute, you would hook up the CV and play C1, then send the 1V calibration sysex to the Minitaur… then play C4 on the Brute and send the 4V calibration sysex to the Minitaur.
hmm, I wonder. If you play a low C for the 1V calibration, and a C that is 3 octaves higher than the low C for the 4V calibration, it should work, unless the problem is that the Microbrute CV output is not actually linear.
The minitaur is assuming a linear CV output… even if it’s 0.8 V per octave or 1.2V per octave, as long as you do the calibration correctly you should get an in-tune result from the Minitaur… I have tested this myself with a a controller that output linear pitch-CV that was not exactly 1V per octave, and I got good, in-tune tracking from the Minitaur after calibrating the Minitaur to the pitch CV from this controller.
I don’t understand what you mean by “incorporate repeating octaves”. Perhaps you are not doing something correctly. Can you describe exactly what you do when trying to do this calibration, step by step?
.well the microbrute is def. not linear in its CV output. i did the same procedure with the qunexus controller and conected the cv of the microbrute again. in tune ! what i mean is that halfway +1 octave on the minibrute (A#4) it stops going further repetaing the octave and just repeats the same tone
looks like if you are playing notes on your microbrute it would be c1 = note 24 = 1V, and c4 = note 60 = 4V.
so connect pitch-CV output from microbrute to pitch-CV input of Minitaur… play C1 / note 24 on microbrute… then send ext cv 1v calibration sysex to the minitaur. then play c4 / note 60 on the microbrute, and send Ext. CV 4V calibration sysex to the Minitaur. That should do it. Result: minitaur should track pitch-CV from microbrute correctly.*
*the Minitaur pitch still won’t go any higher than C5. But below C5 it will track pitch CV from the microbrute.
Omg, I feel like I’m diving deep here. I have a microbrute and want to try this but have only just gotten into the cv/gate world. I’m wondering if I can patch multiple points between these two and make a combined three (?) oscillator synth with one synth going through the other. First I’ll try and calibrate (lord help me with this, I really don’t get). Then I’ll just experiment. Is there anything I shouldn’t do?
I’m trying to do the same thing, but with mini brute to the miniatur. I ran the 1V at C1 and 4V calibration at C4 and it still doesn’t work. The scale is all wacky and doesn’t play the specified pitches.
Has anyone else out there figured out how to get this to work correctly?
I don’t have a multimeter, but will try to borrow one and see what the CV pitch out from the miniature is actually producing.
I would love to know how it works out Ron. I too have a Minibrute and Minitaur and have never been able to get the two to play well together via CV. My minitaur Pitch CV has always been whacky. I thought maybe with the new firmware and editor it would fix it, but alas, it did not.
Mr. Amos, If I posted a video of the connection and calibration procedure and then the resultant wacky scale that comes out, would it ‘help you help me?’
Has anybody found a solution to this problem yet? I’m experiencing the exact same thing: when I use the Microbrute pitch CV to control my Minitaur it simply does not work. I can turn the volume down all the way on VCO 1 and then use the VCO 2 Freq knob to get the Minituar to be in tune with the Microbrute on any given note, but then literally if I hit the next note higher or lower the Minitaur is already significantly out of tune.
I updated my Minitaur to firmware 2.1, and it still does not work. I ran the CV calibration sysex commands, and that literally did nothing.
If it helps, I’ve noticed that when I do the procedure I mentioned above of isolating VCO 2 and then using the Freq knob to get it in tune with the Microbrute, the pitch of VCO 2 will jump. If I start all the way to the left and go all the way to the right on the VCA 2 Freq knob the pitch will actually jump twice, from max to min, and it definitely doesn’t sound like the pitch is going all the way through a full octave even before jumping back to the minimum pitch again.
Also, if I play 16 notes in ascending sequence on the keyboard, the Minitaur pitch resets back to where I started; for some reason the Minitaur is spreading 12 notes of 16 keys? And then when I get to the end of the 16 note sequence, it’s going back to the original note at the beginning of the sequence, not the same note an octave higher, but the exact same note in the exact same octave.
Even more interestingly, the keyboard tracking from the Microbrute is definitely effecting the filter on the Minitaur all the way up and down the keyboard despite the fact that the pitch CV is acting so abnormally, and more importantly, despite the fact that I do not have anything plugged into the filter CV input on the Minitaur.
Also of note, the Microbrute works flawlessly as a CV controller with all of my modular gear. This is definitely a problem that is exclusive to the Minitaur.
Help please!
I hope that this description is helpful to anybody (Amos!) that can offer some assistance with this issue.
So I was just demonstrating to my girlfriend how ridiculous and frustrating a dilemma this 12-note vs 16-note situation is, I realized two things:
The reason that the keyboard tracking was seemingly effecting the filter on the Minitaur is because I am running the Minitiaur in through the Microbrute audio in for this little couch experiment, and therefore I am actually running the Minitaur through the Microbrute’s filter. So, yeah, I got stupid on that one.
The key on the keyboard at which the beginning/end of the 16-note cycle occurs is not in a stating location. If I located the key where the beginning/end of the cycle occurs and strike it repeatedly, before too long it will actually jump to the end of the cycle, and if I press it repeatedly some more it will jump back. I hope this makes sense, and again, I hope this is helpful in bringing a solution to this issue.
Please let me know if there’s any other details or audio or video or anything else that I can share that will help fix this problem.
So it turns out that last night I was calibrating the synth one octave too far, hence the very strange 16-note behavior. I pulled out my voltage meter per Moog’s recommendation via customer service and made sure I was calibrating the synth to exactly 1 volt and 4 volts. I did this, and the tracking went back to an appropriate 12-note behavior. But, unfortunately, my Minitaur still was not playing a C when I fed it 1 volt or 4 volts; the minitaur was actually playing an A flat. I went ahead and recalibrated the synth to a pair of A flats instead of to a pair of C’s, and low and behold, the synth now working properly via my Microbrute’s pitch CV.
Unfortunately there is still some silly behavior coming out of the MInitaur. When I get past the upper range of the synth, I get one octave that repeats the previous octave, and from there on out the synth just plays the same note for the rest of the upper range. Also, once I up past it’s upper range the VCO2 Freq knob once again does the thing where if I rotate from one end to the other it will skip from high back to low 3 times instead of offering a continuous range of pitch.
Are there similar sysex files to adjust 1volt/octave cv for slim phatty?
The phattys have same problem with cv being less than 1v/octave as the Minitaur. Would be wonderful if that exist.
