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Messages - Xavier

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PreenFM1 (the blue one) / Re: Feature Requests
« on: March 08, 2012, 10:07:19 PM »

I like very much the first suggestion... moreover it's very easy to implement...  ;)
I will add it.

Not sure i understand the second one.. when you set the LFO4 in the matrix, set the mulitplier to 127 and the destination to "all osc freq", you don't have enough pitch change... that's what you mean ?


PreenFM1 (the blue one) / Re: It's alive!
« on: March 08, 2012, 10:03:16 PM »

Thanks for the pictures....   :D
This is exactly how the LCD should be, the goal is to have a more confortable angle of vision when the PreenFM is on your desk.

I'm glad most of the problem seems to be fixed.

Istran, let me know if you still have stuck notes...


PreenFM1 (the blue one) / Re: encoder problem
« on: March 04, 2012, 08:46:02 PM »

Good news but this is very strange.
If it fails again give a look at the solder junction  ;)


PreenFM1 (the blue one) / Re: It's alive!
« on: March 04, 2012, 08:43:18 PM »
First congratulation for the 2 new PreenFM. It's always a pleasure to read that  :D
Stimresp, specialy if it was the first time you hold an iron...

Isran, note-off problems ???? I think 1.61 don't fix any note-OFF problem.
What is you configuration ? keyboard directly plugged to the preenFM ? What kayboard model ?

The 5mm ones seem to go at the front.

Aouch.... no....
You should have 2*5mm and 4*10mm...
5mm are supposed to be under the LCD, the 2 LCD screws should go through the two 5mm spacers.
The 10mm are  the ones to separate the PCB from the blue surface control.

Let me know if it's clearer,


What do you mean with VST?

A VST plugin to control the PreenFM from within a sequencer.
I posted a screenshot on the FB PreenFM Page :



I must finish the VST first  ;)



In real time the PreenFM CPU can handle 12 oscillators + 12 enveloppes.
Which makes:
. 4 voices with 3 operators algo
. 3 voices with 4 operators algo
. 2 voices with 6 operator algo

So you're right, with 2 operators algorithm you could get 6 voices.
But the sound you get with 2 operators would be very simple...

Anyway... it could be interesting to have a 2 operators algo with 6 voices.
I may add this in a future firmware.  ;)


PreenFM1 (the blue one) / Re: Presets for PreenFm
« on: February 27, 2012, 11:29:21 PM »
The firmware 1.61 dont have any new presets.
But i keep them for a presets bank i'd like to build...
I'm glad you enjoy fm synthesis  :D


Thanks a lot for reporting this problem and for the files.
I think it's fixed in 1.61 firmware.

Let me know,



Thanks a lot for the file...
I can reproduce it... Strange i never noticed that when playing.

I'll investigate in the "new note algorythm"  ;)


PreenFM1 (the blue one) / Re: encoder problem
« on: February 26, 2012, 11:26:28 AM »


That can only be a hardware problem.
I had this problem after some time of usage on one of my PreenFM.
It cannot be linked to the CC you sent with max/msp.

Check the 3 pins of the faulty encoder.
There must  be a bad solder junction.
Even if you don't see anything obvious, try to resolder them just by applying you iron.
You can also check the junction on the network resistor and on the IC 74HC65 that come from this encoder.

Let me know if you find something,
Or if i'm not clear,


PreenFM1 (the blue one) / Re: Presets for PreenFm
« on: February 26, 2012, 11:16:23 AM »

Hey thanks a lot.
These are the first PreenFM Patches on this forum !!  :D
Some of them are really good :
I like a lot the release in Bellish...
Or how one of the buddha Pad become fragile after 2 seconds (test patch.syx).
Nice... :-)

Tips to get a better signal/noise ratio.
Reduce the "Velo" value, that will prevent the noise to be very low.
Try to increase the sustain value of the enveloppes.. If that does not change the main idea of the sound, prefer them high.

Have you tried to use the step sequencer ?
Please keep on sharing !




I cannot reproduce the problem you describe with long release time.
Could you send me the midi file ? I suspect some specific timing...



Hi Gergor,

Thanks for your post.

I have no idea what can be wrong with the fantom X6.
If you record the phantom in your sequencer and then playback the midi to the PreenFM, is it always OK ?
Does the missing notOff only occures when the Phantom is plugged directly in the PreenFM ?
If you find anything that help me understanding please share, this is a problem that is worth a firmware update.

I'd love more voice too  ;)
I need a more  powerfull CPU for that. The new STM32F4 can be a good candidate... but it will eventually be in PreenFMV2 with new hardware.
All LFO and all Matrix modulation uses 1/10th of a single 3 operator voice.

What you expect regarding polytphony is exactly how it should work.
The behaviour you get is NOT the normal one. And unfortunately 1.60 won't fix anything on this side.
I'll try to reproduce it.
And be back to you soon.


In French / Re: ecran noir
« on: February 19, 2012, 11:03:41 PM »

Merci pour l'info.
Les 2 74hc165 montés à l'envers empêchent l'affichage sur le LCD... Interessant... mais ça m'échappe un peu.
J'en apprends tous les jours  :D

Je suis bien content que tout fonctionne maintenant.


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