I’m not expert since I only have a single Little Phatty but I believe that the latest algorithm uses a round robin scheme where the first Phatty (#1) doles out the subsequent notes to the other Phatty’s (or endpoint devices).
Not sure if the algorithm doesn’t care about what is on the end point, if maybe it simply sends the next notes on subsequent channels sort of how the Oberheim Matrix 1000 did, or if the downstream synths hear ALL of the notes and have to count on their own knowing that each n’th note is destined for them.
I’m guessing but hopefully my possibly inaccurate account of how this works will provoke others to correct me : )
There are a number of folks that hang out here regularly that have more than one Phatty and it won’t be too difficult to get this tested. (it’s one thing to use it quite another to understand how it works and how else it might be applied).
I can tell you one thing, I once had a dream of having my Little Phatty talk with my Taurus III in a Poly mode (albeit a rudimentary one) but could never get it working; the latest code dispenses with the older algorithm which means that Taurus III is not yet compatible.
The majority of Midi devices will work with a Low note / High note scheme but it’s rather shoddy, meaning that you literally have to HOLD a note in order to get the 2nd note recognized as the high note, for instance, or press two near simultaneously.
Interested to see what comes out of this thread… hopefully something!
So, I just hooked up my Minitaur to my LP and set the LP to poly 1of 2. It …sorta..works. I can get 2 note chords to happen, but it’s dodgy at best. I will mess with settings some more and see what happens. My guess is, once it’s dialed in right, it could work.
I gave up. Instead I rerouted my MIDI config. Just spent the past hour sequencing the LP & MT together (hardpanned LR) while I did my best Keith Emerson Stunt Solo on a MophoKeyTetra. I was in the zone man. I need a glittery jacket for moments like that.
Hmm so it’s unstable unless used with another phatty/voyager? I can use cv and gate to make a nice X OSC mono but I can do that with any desktop/rack VCO synth… the poly side got me interested… Thanks for replies. L
The poly mode works by counting how many notes have been presses and then playing the one assigned to that machine. If the phatty is voice 3/4 then on the third note played that synth would be triggered, and then once synth’s 4/4, 1/4, 2/4 have played then synth 3/4 is used agian.
The Phattys used to use some other scheme to distribute midi notes, however it has since changed to this “round-robin” scheme described above by jeepo. The Voyager is still working on the old scheme, so at this stage Phattys and Voyagers can’t be polychained, unless the Voyager poly scheme is changed in the future (Amos has previously mentioned this would be a good idea).
There are various third party midi devices that can distribute midi notes for polyphonic playing. You could look into those maybe.
Your best bet is using an external box for poly voice assignment. That way different synths that use different voice assignment schemes can be used together. A few on the market. Some midi to midi, some midi to CV, or maybe both.
Note that the phatty’s pitch CV in is not 1v/oct. It is around .97; so, if you are going to use midi to cv you would need to use an attenuator to scale it down. Unless, the converter box has cv scalable per voice. It usually tracks okay over 2 or 3 octaves if you are not too picky without.
If the box is cv to midi, the source keyboard would need pitch and gate cv outs for each voice.
FYI, recently I purchased a Mutable Instruments MIDIpal to use as an arp/sequencer for the Minituar, among other things. After going over the manual, I found a neat little app that could be the answer: “Dispatcher”. Described in the manual: “This app routes MIDI note messages from a single channel to several channels. This allows you to play chords on a rack of monophonic synths, for example.” The modes are:
Dispatching method:
cyclic (cyc). Each new note is cyclically played on the next channel.
polyphonic (pol). The mapping of notes to channel uses a true voice stealing algorithm. The MIDIpal tries to reuse the same channel for occurrences of the same note ; or the least recently used channel.
random (rnd). Each new note is routed to a random channel.
stacking (stk). Each note is sent to all channels at the same time. Perfect for thickening a lead by sending it to several synths, or to several parts of the same multitimbral device.
velocity (vel). The louder (higher velocity) the note, the higher the MIDI channel it is sent to.
I set up my Minitaur, Little Phatty, DSI MoKey and Shruthi-1 to the same basic patch (both osc’s set to triangle, filter and env wide open). Set up the MIDIpal and viola! Polyphony! Now to build a panel in MIDI Touch on the iPad to tweak specific parameters from one knob!
I’m interested in a Minitaur for the purpose of stacking it with my Phatty and having the ability to play with 4 osc. Would one need the previously mentioned “app” (not sure if we’re talking iPad here) to achieve this? Or is it possible to set them up direct via CV or MIDI?
the “app” I was talking about is within a specific piece of hardware from Mutable Instruments called the MIDIpal. The “app’s” are things like an ARP, sequencer, LFO, etc. But, to get what you want, it can be done through MIDI. Keep in mind though, that the Minitaur filter and the Phatty filter are different. When adjusted in a scenario like you described, there is noticeable differences between them. So, I found the best solution is to turn off Local Control on the Minitaur and run the output through the Phatty input. And of course, you can only go as high as C4 on the Minitaur.