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PreenFM2 / Re: Output volume vs polyphony..
« Last post by Xavier on May 16, 2017, 09:18:44 AM »

This is how it works.
The voice mixer is 100% digital.

So it maximizes the number of actual bits for each used voice.
Same thing : instrument not used should have their number of voice set to 0 so that it does not take any room in the digital mixer.

Summary : for best resolution, only set the number of voices you really need for each instrument.
PreenFM2 / Feature request?
« Last post by Warmachine on May 16, 2017, 09:10:19 AM »
I'very had the preenfm2 for a little over a year and am quite pleased with it, especially the 4 part multitimbrality. I'm wondering if it would be possible to the time ( in milliseconds ) that it takes for each instrument to play after each key press. If all 4 instruments on the same midi channel were using the same patch, then it could have a pseudo delay effect.
PreenFM2 / Output volume vs polyphony..
« Last post by opus.quatre on May 15, 2017, 05:51:44 PM »
Hello there..
Is it normal if I get a big difference in output volume, when I turn the polyphony "knob" ??
On my preenfm2, the output volume is decreasing, as long as I increase the polyphony, and vice versa.. Is it the normal behaviour ? Or is it just on mine ?

And still.. Enjoy your sun..
PreenFM2 / Re: A higher polyphony ??
« Last post by opus.quatre on May 15, 2017, 12:24:54 PM »
No worry Xavier..
I understand..
Have a nice day..
PreenFM2 / Re: Can't save to usb
« Last post by Xavier on May 15, 2017, 10:48:59 AM »
Thanks for the details (i've modified your subjet).
Sounds like a bug.
Don't know if it's easily fixable as the USB library is the one from STM (the MCU manufacturer).
PreenFM2 / Re: A higher polyphony ??
« Last post by Xavier on May 15, 2017, 10:30:52 AM »

What you describe is of course possible, but it's a LOT of work.
No i won't work on that  ;)

You can chain 2 preenfm2. But they'll have to play different instrument.
Polyphony on one instrument cannot be expanded.

PreenFM2 / Re: Z-plane/Morph filter
« Last post by alien_brain on May 14, 2017, 10:37:29 PM »
yep, a 4 part vector fade could be realized with the right matrix settings and a decent controller joystick setup.  as theorized a while back.  this would include all capabilities of the voice  so you could fade between voices with differing filter types implemented.  just a simple crossfade however, not a strict morph.  but still...  on an fm synth?  sounds awesome!
PreenFM2 / Re: Can't save to usb
« Last post by kx3 on May 14, 2017, 12:19:44 AM »
Save-Syx-Send Patch = message "Done" appears.

If 1- Midi OX waiting for Sysex. Midi port set to PreenFm2. Nothing happens.
If 2-Midi OX waiting for Sysex. Midi port set to "anything on wich Preen is connected via DIN5".  Dump succesfully received.

If I repeatedly dump the single sysex patch, once in a while it shows in the input monitor.
It looks like corrupted message is received (like no status byte is received as nothing is shown in the monitor)

Problem occurs only via USB port when sysex is involved. With standard message (upon reception) USB port works just fine.
I tried with different buffer size with no success.
PreenFM2 / A higher polyphony ??
« Last post by opus.quatre on May 13, 2017, 10:33:10 PM »
Hello there.. And most of all, hello Xavier.. Because this message is mainly for you..

Let's say that the subject will be : would it be possible to make a version of PreenFM2, with a bigger polyphony, by using a pair of Preenf405, one would be the master, and the other would simply be the slave ??

I know that the PCB is not made for it.. But we can probably imagine that, instead of placing the Preenf405 board in the IC support, we could use headers, and connect a second PCB which would hold both Preens..

My old Ensoniq ESQ'1 has a "overflow" option, in its MIDI menu, which allows driving a second ESQ'1 (or a ESQ'M expander) when the number of midi notes received, exceeds it's own polyphony (8 notes)..

The master Preen would then have to send exceeding notes to the slave, and performance control like pitch bend, mod wheel etc.. In fact a full bunch of incoming midi messages.. But not only ; it would also have to send all the preset (or combo) parameters, so that both play the same preset or combo..
The slave would be totally hidden, the user would not have access to it : it would only be there to obey to the master..

Each preset or combo that we would save in the master, would be saved identically in the slave's memory, same preset or combo number..

In terms of price, what would it cost ? Of course, an added PCB, and a second Preen.. What else should be doubled ?
What else should be added ?? I think that there would need a mixer.. Possibly digital mixer, or analog, but prior to the final stage, so that we can use the volume knob to set the volume of the mix..

I know, Xavier, that your time is not infinite.. You have a life to live, and you once said that you would like to have time to play your music.. I understand this very well, and I can just approve you..
And in fact, except me, I don't know how many people would be interested in having a more polyphonic version..
I'm just wishing that I could have a "wider" preenFM, (mainly for electric pianos, in fact) and by this message, I'm opening the topic, for discussion.. But if you say "no way", or "no time", or "too complicated", and even "useless when it concerns only you", then I would fully understand and abandon my wish..

Have a good week end..

PreenFM2 / Re: New slippers -> no USB
« Last post by opus.quatre on May 12, 2017, 08:59:37 PM »
Oh.. I see.. Ok, it works.. Thanx Big Secret..
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