Muff's Modules & More

[matttech]

hi all

so.....am STARTING to get my head round this thing a little

if i wanted to do vector synthesis, mixing continuously between 4 different oscs/ signals, would i just need the following:

JAG
4 x linear VCAs (am thinking about 2 x a132-1, as i have one already)

is that it?

cheers
matt

[Monobass]

or a couple of Intellijel ufades maybe? maybe the Toppobrillo Mixiplexor?

you don't quite have a the flexibility of 4 vcas with those, but it's maybe a lot more compact/simple in terms of CV control.

[READYdot]

Wow, never occured to me to try vector synthesis with my modular... now I know why i NEED a JAG!

[mudlogger]

[/img]

also some good stuff here :

http://www.muffwiggler.com/forum/viewtopic.php?t=5306

[Carci]

Or a 4ms VCA matrix.

[cillianjohn]

Good timing, I was trying out some vector synthesis for the first time last night using choices and my cwejman 4vca-mx.

[algorhythm]

Yup, a Choices stick and the VCA Matrix or HexVCA work great for this...

[slow_riot]

you might want to look into the Boogie filter as well. With that set up you can use the joystick to morph between all manner of filter types.

for me the perfect VCA for the JAG is the Blacet Super VCA which is basically like the Fonitronik Attenuverting Mixer but with voltage control (and no inversion). The main difference with this and the Doepfer VCAs is the addition of a built in mixer but you might already have that functionality somewhere else.

[matttech]

so do i not actually NEED the JAG to do this then?

god this confuses me for some reason....

i've got loads of VCAs and Choices already (and inverters)...maybe i can just do it with them then

if so, could someone describe the patch? (the more detail the better)

i don't see how you could go between 4 different oscs with simply a joystick, 4 vcas and inversion (of two of them)

because.....if you had Choices set up in unipolar mode and then sent say X to the CV input of OSC1, and the inverted version multed out to the CV of OSC2, you could then fade between those 2 oscs. you could then do the same with the Y axis to mix between OSCS3 and 4.

so....in the middle you would get an equal blend of all 4 oscs.

but if you took the joystick all the way to the left of the X axis to get only OSC1, you would be half the way up the Y axis, due to the circular nature of the joystick travel

is this why you need the JAG?

or am i hopelessly confused about this again??

what i want to be able to do is have any of the oscs on their own (soloed), and then blend gradually into the next one round the circle

[Carci]

I can't see a simple way to do what you're describing.
The JAG makes it simple AND sexy.

[ersatzplanet]

The need of the JAG is when you want to do quadraphonic panning that follows the stick movement. With the typical 4-VCAs and a joystick you get places where the +/- nature of the axis of the joystick don't align with the Quad sound field. You need six VCAs to do it without a JAG. Two sets of left and right (for front and rear sets of speakers) and another set of VCAs to do the front and back (feeding the other two sets). Think of the joystick axis as + and - so the four corners are ++(FL), +-(FR), --(BR),-+(BL) and the middle as 0,0 (if you have a bi-polar joystick which most are not - you will have to add bias voltages to get these results). Now think of what 4 VCAs in the corners need to see as control voltages to pan a sound around. What happens in the BR position for instance? The joystick is turning everything off at this point. This is what the JAG is for - turning a two CV system into a four CV system.
The JAG with a VCA Matrix would be a ton of fun since the jag has many simultaneous outputs that all can be used with the VCA matrix.

[matttech]

[ersatzplanet]

[Leoespejo]

Mmmmm ...... Great information in this topic

A most try patch..

[flashheart]

You can do this with crossfaders, but you actually need more than you think....

1st Xfader is between Osc 1 / 2, let's say X-axis
2nd Xfader is between Osc 3 / 4, X-axis again
3rd X fader - Y-axis is between the outputs of the 1st 2 Xfaders
Assuming your corners are:
Osc 1: Osc 2
Osc 3: Osc 4
TL gives you Osc 1, TC = 1+2, TR = Osc 2
CL gives you 1+3, centre = 1+2+3+4, CR = 2+4
BL gives you Osc 3, BC = 3+4, BR = 4

If you've the Doepfer dual Xfader you're 1/2 way there. X CV to both, then a couple of VCAs & and inverter to mix between the outs using the Y CV.

Using 4 VCAs gets more complex, fading between 1+2 or 3+4 is easy but how do you mix between the pairs? You need to actually control the CVs themselves with the joystick before they get sent to the VCAs (I think ). See I'm confused now.

I suspect this kind of headscratching is exactly what the JAG was designed for, but shirley you don't need to buy something else?



do you?

[matttech]

[pulse_divider]

[ersatzplanet]

[30ohm]

Ok, here's my question that has been puzzling me:

Why the hell doesn't the JAG have a joystick built-in????

[RubberCityNoise]

[Floyd Pepper]

Malekko / Wiard Joystick Axis Generator (JAG)


"Here we are checking out the super-awesome Malekko / Wiard Joystick Axis Generator, or JAG. There are four different drone tones running into the four inputs of a 4ms VCA Matrix, using two outputs summed to our Eventide Space reverb pedal. We're opening the eight(!) VCA's with the JAG being controlled by an Analogue Systems rs220 joystick module."

[30ohm]

[Babaluma]