Recent Posts

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21
PreenFM2 / Re: start phase of an operator
« Last post by Xavier on December 01, 2019, 05:33:04 PM »

The starting phase of operators cannot be modulated.
It is set to a quarter of the period, so that it starts when the sinusoid  value is 1, to allow faster attack.
See the '* 0.25' here
https://github.com/Ixox/preenfm2/blob/master/src/synth/Osc.cpp?ts=4#L178

I don't understand your second sentence.
22
PreenFM2 / Re: PreenFM Eurorack module
« Last post by aze_007 on December 01, 2019, 05:26:46 PM »
Hi, I got a ready built preenFM2 Eurorack Module. It works great with MIDI however I cannot trigger a sound with the CV/Gate CV inputs. As described above I am choosing the instrument in the settings. I am on Firmware 2.09. Can anyone point in the right direction?
Thanks, Alexander
23
PreenFM2 / start phase of an operator
« Last post by matrix12x on December 01, 2019, 05:05:35 PM »

Is there a way to modulate the starting phase of an operator?


I thought about maybe using an envelope to modulate the pitch of the operator slightly to cause a phase shift.
24
PreenFM2 / operator feedback
« Last post by solipsvs on December 01, 2019, 04:27:21 PM »
i understand that this is too much for the cpu to produce, but what if we understood that the polyphony would diminish when using a ‘feedback enabled patch’?  is it possible to do?  i often use preenfm2 as a mono bass synth anyway.   if i dont need all that polyphony, can i have feedback?  i would dearly love to use it with preenfm2!   :P
25
PreenFM2 / Re: New filters
« Last post by solipsvs on November 30, 2019, 03:29:20 AM »
@solipsvs here is the eurorack version :)

many many thanks!
26
PreenFM2 / Re: Master tune???
« Last post by PreeenFM2 on November 29, 2019, 12:07:29 PM »
Ah thanks, so does this miss some official firmware features?

I have been programming a live set with the PreenFM so Im scared it wont be compatible?
27
PreenFM2 / Re: New filters
« Last post by Brockstar on November 26, 2019, 06:04:31 PM »
Yay, thank you Toltekradiation. I'll give these a go today!
28
PreenFM2 / Re: STM32F4 - serial (which is good/best, wich is bad?)
« Last post by mik on November 26, 2019, 10:40:45 AM »
Hi Csaba,

Have you already ordered a board? Which one then?

According the datasheet (which is the same for both MCUs) the main difference is in available peripheral (GPIO ADC numbers) so the porting should not be a big issue.
I saw some chip boards on Aliexpress (e.g. https://www.aliexpress.com/item/33055327749.html?spm=a2g0o.productlist.0.0.31e118f3uHhzum&algo_pvid=2e4274c1-4e17-4ae4-98b0-3a4032525c42&algo_expid=2e4274c1-4e17-4ae4-98b0-3a4032525c42-5&btsid=41c9ce30-2da8-4f33-9a0f-a42f6c830e32&ws_ab_test=searchweb0_0,searchweb201602_9,searchweb201603_52) around 10eur/buck

There is also one with a sound driver on board [https://www.st.com/en/evaluation-tools/stm32f4discovery.html] from ST around 20eur/buck

Do you have any progress on this topic?

Best,
Mik
29
PreenFM2 / Headphone Jack
« Last post by matrix12x on November 26, 2019, 02:26:00 AM »
Has anyone put a small headphone amp and jack in their PreenFM2?
30
PreenFM2 / Re: New filters
« Last post by matrix12x on November 26, 2019, 01:55:17 AM »
@Toltekradiation

They sound great. I really like La+d.

Lad+ seems to be a little "zipper" when I change the frequency knob.

The three formant filters sound cool.
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