Minitaur Paraphonic Sequencing

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George Nada
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Joined: Fri Mar 29, 2013 11:48 am

Minitaur Paraphonic Sequencing

Post by George Nada » Thu Feb 26, 2015 9:42 pm

I was watching the Sonic State video for the MS-20 and Nick was sequencing it paraphonically with the new Korg SQ-1. That made me wonder if the same could be done with the Minitaur using its CV mapping. I don't have one yet, but am considering it. Can anyone confirm or deny whether this is possible? Thank you!

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_DemonDan_
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Re: Minitaur Paraphonic Sequencing

Post by _DemonDan_ » Sat Feb 28, 2015 10:00 am

A few years ago, I thought it would be an interesting experiment to send CC data to the Minitaur, along with Notes, to make VCO2 play different pitches than VCO1 such that you could have two-part harmonies with the illusion of independent note control over each oscillator.

To do this I needed to find the exact combination of CC#17 (VCO2 Freq. MSB) and CC#49 (VCO2 Freq. LSB) Values for all VCO2 notes from an Octave Below to an Octave Above VCO1.

To make this as easy to read as possible, I assumed that VCO1 was playing "C" and then found the necessary offset values for VCO2.

I first did this for CC#17 only and found the nearest "pleasing" (but not exact) tunings, and then did it again much more accurately using both CC#17 & CC#49.

Obviously, the non-exact nature of analog may make your Minitaur's values slightly different, but I'll bet they're pretty damn close.

---------------------------------------------------------
If VCO 1 is playing "C", the following CC#17 Values will set VCO 2
to "approximate" tunings for pitches BELOW that "C":


C [0]
C# [11]
D [15]
D# [18]
E [19]
F [22]
F# [26]
G [37]
G# [40]
A [43]
A# [48]
B [54]
Unison [63]

---------------------------------------------------------
If VCO 1 is playing "C", the following CC#17 Values will set VCO 2
to "approximate" tunings for pitches ABOVE that "C":


C# [72]
D [79]
D# [83]
E [87]
F [90]
F# [100]
G [105]
G# [108]
A [109]
A# [112]
B [116]
C [125]

---------------------------------------------------------
If VCO 1 is playing "C", the following CC#17 then CC#49 Values will
set VCO 2 to "near-exact" tunings for pitches BELOW that "C":


C [0-0]
C# [10-101]
D [15-29]
D# [17-81]
E [19-55]
F [21-103]
F# [26-54]
G [37-1]
G# [39-126]
A [43-88]
A# [48-55]
B [54-90]
Unison [63-38]

---------------------------------------------------------
If VCO 1 is playing "C", the following CC#17 then CC#49 Values will
set VCO 2 to "near-exact" tunings for pitches ABOVE that "C":


C# [72-67]
D [78-126]
D# [83-109]
E [87-83]
F [90-89]
F# [100-110]
G [105-107]
G# [108-58]
A [110-119]
A# [112-57]
B [116-73]
C [126-24]

---------------------------------------------------------
Please ask if I'm not being clear about something, but the basic idea is that you can insert the CC#17, or CC#17 & CC#49 values into your sequence to make VCO2 play any note within an octave (up or down) against VCO1's note. Of course, it won't allow VCO2 to go any higher in pitch than the Minitaur's limitation, but you *can* insert the CC#s more often than Note Ons such that VCO2's melody is playing more (and faster) notes than VCO1.

Have Fun!
_ :twisted: _DemonDan_ :twisted: _

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bichuelo
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Re: Minitaur Paraphonic Sequencing

Post by bichuelo » Sat Feb 28, 2015 10:26 pm

If you set the Minitaur's key priority to low note, you can use another synth with priority set to high note on the audio input, and then you will have duophony. Its really cool and it works fine.
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