Minitaur VCO2 Offsets for 2-Note Melodies

[_DemonDan_]

Hi All,

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!

[Richard J]

So, what you're saying is that the pitch of VCO2 can be independently controlled..?

That could be fun!

Richard

[_DemonDan_]

So, what you're saying is that the pitch of VCO2 can be independently controlled..?

Well... I sort of said it more like, "...you could have two-part harmonies with
the illusion of independent note control over each oscillator."

The end result is real, but your 2nd note is always defined as being a certain
amount above or below the 1st note. Once you've sequenced your first line
of notes you can then insert a CC#17 (& CC#49) value around the same time
as any Note On to hear two pitches. Instead of giving you intervals, I'm just
showing you what VCO2 note will occur if you play "C" and send that CC#17
Value to get appoximate tunings, or both the CC#17 & CC#49 Values to get
more musically-exact pitches.

If you're willing to put in the work, (the kind that makes people say, "Wow,
you must have a lot of free time on your hands,") you will be able to
convincingly sequence duophony on your Minitaur.

[till]

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.
...
Have Fun!

Thanks for this easy to read reference sheet.
I will give it a try.
Maybe I should use some user editable controller app for the iPad to be able to "lay two voice paraphonic lines.