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Messages - Xavier

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76
preenfm2 and preenfm3 / Re: PFM3: Stuck pixel artifacts around text
« on: May 10, 2023, 10:19:23 PM »
Thanks. That's very usefull.

Looks like drawing the enveloppe go beyound the limits and corrupt the charater map.
I cannot reproduce.
Do you use any "User" Env curve ?


Can you copy the 4 values of
Op2 Env Curve ?
(You have to press the "Env" button to select this second page.)

And also the 4 "Level" values.



77
preenfm2 and preenfm3 / Re: Question about parts order for fm3 build from a new member
« on: May 09, 2023, 11:32:35 PM »

Hi,

With PCB+topsurface order you'll get spacers, screws and headers that are needed for the build.
Yeah, for a single header Mouser is not the cheapest way from Europe.
To make it short you need up to line 20
https://docs.google.com/spreadsheets/d/1Xt8gQqbJvMSSZ3lOPazCrE3Qu6qT4qbJweNDEm-yr78/edit#gid=1194200605

Xavier

78
preenfm2 and preenfm3 / Re: PFM3: Stuck pixel artifacts around text
« on: May 09, 2023, 11:23:29 PM »
Hi,

You'll find some help to navigate through menu here:
https://github.com/Ixox/preenfm3/wiki/Quickstart
The documentation is a weak part of the pfm3.

The yellow pixel bug you described is something i've never seen.
It does not seem to be related to the TFT driver. More a hardware problem or a bad memory write somewhere that affects the char map.
Would be great if you can find steps to reproduce. Or maybe it's totaly random and can happen on any page with any sound preset ?
Are all same letters the same with the artifact ? Can you post a picture ?

The pfm3 TFT driver's goal is to update the screen only when it needs to be necessary.
The TFT is divided into several parts and only the one that is modified is sent from the pfm3 to the TFT. That's setDirtyArea() goal. If you set all dirty bits, then ALL TFT memory will be transfer and not only the one that changed.

If you want to make changes compiling the kernel is not very complicated.
Download STM32CubeIde from ST site (version 1.5.1 is garantee to work fine), and import the firmware and lib folder.
Then compiling project should work.

If you don't have a stlink programmer, you can use create_object.sh in https://github.com/Ixox/preenfm3/tree/master/scripts
to create a .bin file, upload it on the SD card and flash if from the pfm3 bootloader.

Sounds a bit complicated at first, but it's not really.

Let me know if you have any question.

79
preenfm2 and preenfm3 / Re: Volume Level with a 10k resistor
« on: April 27, 2023, 08:54:09 PM »
Quote from: UltraBlack on April 25, 2023, 08:19:31 PM
That cleared up a lot, thank you!

One more thing: I noticed, that all jack sockets have contacts for a TRS jack. Would it be possible to output a stereo signal by outputting the mono signal to both available contacts?

Haha looks like it was not that clear.
Don't insert anything in jack 1 = > jack 2 will be stereo for output 1/2
Don't insert anything in jack 3 = > jack 4 will be stereo for output 3/4
Don't insert anything in jack 5 = > jack 6 will be stereo for output 5/6

80
preenfm2 and preenfm3 / Re: paraphonic effects
« on: April 27, 2023, 08:50:58 PM »
Oh nice that's a PR against the rebased version :)

I'll seriously have a look at this after the vacations in 10 days i think.
Thanks a lot !

81
preenfm2 and preenfm3 / Re: FM3 MIDI CC list?
« on: April 18, 2023, 10:06:17 PM »
Quote from: Lcerutti on April 16, 2023, 11:31:20 PM
Hi all,
Is it possible to address reverb parameters in or reverb mix via midi CC?

Some of them are :
CC#40 :     CC_MFX_PRESET
CC#41 :    CC_MFX_PREDELAYTIME
CC#42 :    CC_MFX_PREDELAYMIX
CC#43 :    CC_MFX_INPUTTILT,
CC#44 :    CC_MFX_MOD_SPEED,
CC#45 :    CC_MFX_MOD_DEPTH,

You need to send the CC to the global midi channel.

Maybe using this global midi channel should accept more "Mixer" parameters.
Reverb mix would be one of them.

82
preenfm2 and preenfm3 / Re: Volume Level with a 10k resistor
« on: April 18, 2023, 10:03:25 PM »

I agree that's a bit confusing  and not very easy to explain :)

Hardware :
The preenfm3 has 3 setereo DACs that are wired to 6 audio jacks (mono).
There's a (mecanical) trick at the jack level, that redirects jack 1,3,5 to jacks 2,4,6 if you don't insert anything in 1,3,5.
In this case jacks 2,4,6 (or only one of them) become stereo.
That means that instead of 6 mono jack you can use 3 stereo jacks 2,4,6.
At the end you still have 6 mono outputs.

Firmware :
Each of the  6 pfm3 instruments have a Stereo output. Instruments can be routed to ANY of the jacks.
- only one jack 1,2,3,4,5,6. Instruments will be then converted to mono.
- regular usage is using 2 jacks :  12, 34 or 56 for stereo output.

Hope that makes sens.

83
preenfm2 and preenfm3 / Re: FM3 MIDI CC list?
« on: April 16, 2023, 10:35:51 PM »
I think you mean Mix and Pan for 4 operators.
Very few FM algorithm use more then 4 carrier operators. Only algo 23 and 27 i think.
For algo 23 and 27, you cannot control mix and pan of operator 5 and 6 with external midi CC.
Not sure that's a strong limit.

84
preenfm2 and preenfm3 / Re: paraphonic effects
« on: February 26, 2023, 07:00:35 PM »
Thanks for the CPU details.
All that sounds very good.
Cannot wait to give a try when i'm back.

85
preenfm2 and preenfm3 / Re: paraphonic effects
« on: February 25, 2023, 09:31:58 PM »
Toltekradiation strikes again  8)
That seems incredible  !!!

I'm not at home and cannot try this before 8 days at least :(

I don't understand where this new Fx list show up in the UI ? with the voice FX ?

What is the CPU impact of those FX for 1 timbre ?
I could wait to give a try a check but i'd love to know that :)

86
preenfm2 and preenfm3 / Re: Preenfm3 bug report + some FR + some questions
« on: February 13, 2023, 09:32:29 PM »
I never tried but it's one of the stick thread here :
https://ixox.fr/forum/index.php?topic=63539.0

87
preenfm2 and preenfm3 / Re: PFM3 New Beta firmware : Toltekradiation's features + others (0.994)
« on: February 11, 2023, 03:10:00 PM »
Oh Nice thanks.
Let me know if you see somewhere in the doc where i can add this link.

88
preenfm2 and preenfm3 / Re: Preenfm3 bug report + some FR + some questions
« on: February 11, 2023, 03:08:36 PM »
Hi,
Thanks for the feedback.
I'll have a look at the bugs for sure.
Too bad you don't have steps for the second one.
Not sure how to make the arpeggiator work with MPE. The arpeggiator is per voice. MPE is spread over N voices. Anyway i'll keep that in mind.

The Gate FX comes from the preenfm1, i hesitate several times to get rid of it. But it's still here.
Don't expect impressive things out of it. Can be fun though.
It starts "gating" above 0. 1 is the MAX. All value >1 will be considered as 1.
It's worth trying step seq modulator as input.

From you list of FR, the delay cannot be implemented for memory reason of the pfm3 hardware.

The firmware started as a one time project. But some recent great improvements (such as the reverb or the new env) have been added by Toltekradiation.
Everybody can contribute ;)

Xavier

89
preenfm2 and preenfm3 / Re: Map Beatstep Pro knobs to Filter (e.g.)
« on: February 11, 2023, 02:56:48 PM »
Hello,

When you say buttons, yean mean knob ?
You need to have a look at yout Beatstep pro manuel and see what midi CC it sends.
You can then modify some user CC on the preenfm3 to fit what the beatstep pro sends.

Xavier

90
preenfm2 and preenfm3 / Re: preenfm3 SEQ feature wish [done in firmware 0.995 ]
« on: February 05, 2023, 06:56:22 PM »
Here is the version with note creation.

Allowing 3 in SEQ length is more difficult than it seems  ;)
Step sequencer counts from bar 1 to 4 and is design so that every seq starts on bar 1.



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