MIDI CC to Voltage Converter.

drewfx1
Not particularly cheap, but various standalone Midi->CV converters for pre-midi analog or modern modular synths can do this:
 
http://www.kentonuk.com/products/select/m-cvsel.shtml
 
http://www.doepfer.de/Dark_Link_e.htm
 
 
From a computer there are also SW solutions, but they require a DC coupled audio interface:
 
http://expert-sleepers.co.uk/silentway.html
 

drewfx1
Now that I think about it - you may need a special cable with one of those and ideally you would want to measure what voltage the Yamaha is expecting...

drewfx1
....It's not a big deal at all and completely safe if you know - or know someone - with some basic electronics knowledge.

robert_e_bone
Would a midi expression pedal be able to do what you seek?  I have a Behringer FCB1010 midi foot board, and it has 2 midi expression pedals that can each be connected to whatever continuous controller event you wish.
 
Just a thought.
 
Oh, by the way, my son just literally last night bought one of these same keyboards, and WOW it sounds great! Maybe he will send me back the other keyboard that has been on loan to him for about 2 years...... (it could happen) :)
  Hi Robert,
Glad your son got one two, he has great taste! I don't think the FCB1010 will do the trick. I believe it IS a controller and NOT a converter. I need something that will convert MIDI CC to CV (continuos controller messages to a constant voltage) output. Appreciate your input though.
Bob Bone
 

WallyG

drewfx1
....It's not a big deal at all and completely safe if you know - or know someone - with some basic electronics knowledge.

I'm very lucky since I know someone very close to me with some basic electronics knowledge.
Me! I earned a living as an Analog Integrated Circuit Design Engineer! I have a full complement of electronic test equipment (i.e LeCroy 4 channel Color oscilloscope, etc.) in my lab so I'm covered.

I appreciate your help in locating a possible candidate for my application. I also found a kit available from PAIA, but I called their sales and customer support numbers since I had some questions and nobody answered the phones.

b rock
Killer keyboard.  I wish I hadn't seen that ...
 
One possible solution might be to convert Sysex to CC with a MIDI Solutions Event Processor.  There's a companion Programming Tools app that generates a custom conversion, which gets stored within the inline MIDI device itself.  Power for the EPP is (usually) derived from the DIN input.  But, for around the same price ...
 
I think a better solution would be the EHX 8 Step Program.  You can have an expression 'thru' pedal at the input, a versatile eight step sequencer in the middle, and MIDI-to-CV (or expression) at the output.  The MIDI In implementation over individual parameter control is second to none.  And if your destination has a range requirement less than 0-5 VDC (like my Eventide pedals do, at 0-3.3VDC), the maximum Depth can be adjusted over a range of 0 to 10.
 
I use the 8 Step Program to control most anything I have with an expression pedal (or CV) input ... from my guitar pedalboards to hardware synths.  To satisfy that inner Wakeman, I'll occasionally rely on an AKAI Max 49 to achieve similar results (MIDI-to-CV conversion, with MIDI Note or CC sequencing as the bonus).

drewfx1
 
Well now I feel a little stupid, especially since I was probably being overly cautious to begin with.  
 

drewfx1
 
Not knowing that you were a DIY guy, I didn't mention but there are lots of DIY kits and/or PCB's, etc. in the modular world if you want to investigate that route.
 
Forum where you might better search/ask:
https://www.muffwiggler.c..orum/viewforum.php?f=17
 
List of modules that may or may not be available:
https://www.modulargrid.n...ow1u=&order=newest

drewfx1
You have 48 patents and don't know what zipper noise is? 
 

drewfx1

WallyG

If I can change the position of the Super Knob with a MIDI controlled voltage, than it should be no different than changing it with your hand or the foot pedal, all things being equal.

Walt

Not quite. A 0-5V CV generated directly from a 7 bit midi CC would be divided into ~.04V steps unless there is filtering on the CV out to slew the stepping at an appropriate rate.

drewfx1

WallyG

drewfx1

WallyG

If I can change the position of the Super Knob with a MIDI controlled voltage, than it should be no different than changing it with your hand or the foot pedal, all things being equal.

Walt

Not quite. A 0-5V CV generated directly from a 7 bit midi CC would be divided into ~.04V steps unless there is filtering on the CV out to slew the stepping at an appropriate rate.

I understand what your saying, but if you're recording/playing back notes with MIDI and Super Knob positions with Sysex messages isn't' that the same thing? Or are saying that I would need more that 7 bit resolution? I didn't think there were 128 discrete steps of the Super Knob. I'm about 2,500 miles from my Montage (I'm in Webster, Mass), but looking at a photo of the SK on the Web there appears to be 20 discrete positions.

Walt

Sysex can have whatever resolution is required based on the number of bytes assigned to the parameter in the sysex implementation. But out of curiosity I just looked at the midi sysex implementation in the Data List manual and I found that the Super Knob position is indeed only 7 bit in this case.
 
So you are correct. The stepping/zipper noise is only a potential problem if the knob input has greater than 7 bit resolution. Or if they're applying smoothing/interpolation when the knob is changed but did something dumb and didn't apply that smoothing for everything that could control the knob parameter. 
 
It's indeed very odd that it doesn't receive CC as it looks from the manual like it can be set to send CC.

SuperG
Ahhh..... starting to make some sense to me now...
 
CC 4, although it says it's for a foot controller, is a 'channel' message, so it wouldn't be appropriate here. Besides, anybody know of a synth that actually uses CC 4? I can't find anything.