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PreenFM2 / Re: New filters
« Last post by matrix12x on August 16, 2019, 12:52:29 AM »
The new filters sound great. I've been playing for the last hour and a half.
No crashes yet.

BTW, Where did the all-pass go?
PreenFM2 / Re: New filters
« Last post by kyoto on August 15, 2019, 05:04:16 PM »
Toltekradiation, thank you very much for your work -- goodbye weekend  8)
PreenFM2 / Re: New filters
« Last post by Toltekradiation on August 15, 2019, 02:47:23 PM »
another version with some bug fixes :
all new filters can now be controlled with the matrix.
+ various tweak
i think i'm done for today  :P
PreenFM2 / Re: New filters
« Last post by Toltekradiation on August 14, 2019, 10:41:22 PM »
hi guys, thanks for the interest !
yes there is some room for experimentation !
but not so much cpu, so it seems we must keep it simple..
still finding my way through this, but yeah! i added foldback & xor distortion to this version.. + some tweaks and fine tuning around the sigmoid & distortion..

(edit : modified version with new foldback algo)
PreenFM2 / Maybe pitch-wheel bug/glitch in Latest firmware : 2.10 (2019 june 13th)
« Last post by SMF on August 14, 2019, 10:49:44 AM »

I'm not too sure of this one but could it be that I found a bug/glitch in the pitch-wheel-processing of 2.10? Pitch-bend-messages seem to be not followed in the full range.

What I expected:
Midi-Pitch-wheel-Messages are followed in the range of +/- 8191 values.

What I found:
Midi-Pitch-wheel-Messages are followed in  the range of (aprox.) +/- 1280 values.
There is some uncertainty in this value -- therefore the "approx." -- because I have tested this from within a DAW and "by ear" until there was no audible change any more.

How to reproduce:
Create patch mapping pitch-bend to all-osc-freq (or all-osc-freq-harm) and create a pitch-bend-transition with your favourite DAW in the range of +/-8191.

PreenFM2 / Re: New filters
« Last post by matrix12x on August 14, 2019, 03:22:47 AM »
Awesome!!! I've been wanting to do an all-pass for a while. I also wanted to do a comb-filter with some distortion. I will try this out and let you know if I find any bugs.

Great work!
PreenFM2 / Preenfm2 for sale.. Already built, fully working..
« Last post by opus.quatre on August 13, 2019, 10:32:42 PM »
Did you ever dream that you would have a preenfm2 but you are not able to soulder anything ? Or you don't have time.. Or you're lazy.. or your soldering iron is dead..

It's beautiful, isn't it ?

Now it's your chance !!

I am willing to sell my BUILT AND WORKING PREENFM2..
Already built, for FREE..
Built a bit more than one year ago, tested, working, but then I didn't use it much..
In fact, I explored it a bit, tried a few things, and went back to my usual VSTs..

So, it seems clear that I will never really use it, even if I'm sure it's a great engine..
(Obviuosly, if it were a VST, I would almost always be on it, programming presets and playing music..)
(And btw, Xavier.. Or anyone having the answer.. Is there any reason why the Preenfm2 is not compiled as VST,  AU or LV2 ?)

Ok ok.. So, mine doesn't have the beautiful blue OLED.. And no ugly yellow OLED..
In fact, line has an LCD screen.. That's nice too.. But it won't fit in the usual box.. And that's the reason why I sell it without box..

So, it's a Preenf2, without box, and with an LCD screen.. You will decide to keep the LCD, or to buy and mount an OLED.. ANd you will have to buy or build a case..

Whatever.. I have paid it 140euros plus 10euros shipping..
And I will not ask any profit.. I will sell it back for that price (140+10), even if I spent time on it to build..
Isn't it a chance ?

So if you are ready to pay 150 plus shipping, you can contact me..
Pictures can be seen here  ;
Have a nice.. day ? night ?
PreenFM2 / Re: New filters
« Last post by kyoto on August 13, 2019, 09:23:16 PM »
wow - great - now will try ;)
PreenFM2 / Re: Latest firmware : 2.10 (2019 june 13th)
« Last post by kyoto on August 13, 2019, 08:34:59 PM »
to Toltekradiation - wow - great ideas - I look forward to and I hope you succeed ;)
PreenFM2 / Re: Basic waveforms with FM
« Last post by SMF on August 12, 2019, 05:34:39 PM »
Hi Xavier,

FM needs a low pass (few HZ) after operators to avoid this pitch shifting.

when I read this for the first time (in an older thread), I assumed it was a typo, but as you repeatedly say it's a low-pass filter, I am curious now... because for all what I recall, it is a high-pass filter which is required to get rid of the DC-component of the resulting spectrum in case of FM (PM does get rid of the DC-component inherently)...

So, if you really use a low-pass filter in between the operators, then I assume that it might be used to isolate (integrate over) the DC-component from the signal and then subtracting it from the next modulator-input? If so, then you turned the low-pass into a high-pass in this way...

But I may be misunderstanding what you actually do there.

all the best,
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