Messages

1366

preenfm2 and preenfm3 / Re: PC/Mac Editor version 2.00

« on: November 23, 2015, 10:59:06 PM »

Hi,

Sorry i forgot your post.
It should appear in the list of VST instruments.
I cannot garantee it works with Cubase, i've never tried.

The standalone version works as a VST inside a minimal host.
You have to select an audio device to have the VST audio loop called by the host. So that it can deal with midi events.
That's a technical only constraint.
The audio will in any way go out through the Audio Jack.

Xavier

1367

preenfm2 and preenfm3 / Re: cerb40 flashing

« on: November 23, 2015, 12:07:58 PM »

The 2 resistors are only usefull when you use a LCD.
But does not hurt at all with an OLED.

The third one is a external connector that would allow to read voltage (connected to ADC) if it was used. But it's not So also useless.

Best

1368

preenfm2 and preenfm3 / Re: New Preen FM 2 - love it!

« on: November 23, 2015, 09:36:31 AM »

I'm glad you like your preenfm2.
Thanks for this nice sounding demo.

If you want, soundcloud have other intersing demo:
https://soundcloud.com/search?q=preenfm2

1369

preenfm2 and preenfm3 / Re: my appreciation and suggestions

« on: November 23, 2015, 09:34:56 AM »

I'm not into a firmware upgrade mood, but i keep these ideas in mind.. Thanks for sharing.

1370

preenfm2 and preenfm3 / Re: LFO frequency >100Hz. Greater timbral possibilities.

« on: November 23, 2015, 09:34:14 AM »

The problem is that i hacked frequency 24.5 => 24.9 and change them in to midi clock synced frequency.
So that makes the change more complicated if i want to keep the compatibility.

Compiling the firmware is really easy... perfect small project for people who don't care about compatibility with previous patch they have that have LFO synced to midi clock.

1371

preenfm2 and preenfm3 / Re: LFO frequency >100Hz. Greater timbral possibilities.

« on: November 02, 2015, 09:47:30 AM »

I never tried that.
If you manage to compile the firmware (which is very easy) you can try modifying lin 290 here :
https://github.com/Ixox/preenFM2/blob/master/src/synth/SynthState.cpp
Current values define : min 0.0Hz, max 24.9Hz, number of values 250.

You have to keep in mind that LFO are calculated every 32 audio samples.
So the LFOs refresh at around  1200Hz.
Don't expect to have nice LFO waveform when you increase its frequency.
But that maybe worth giving a try.

Xavier

1372

preenfm2 and preenfm3 / Re: New firmware 2.02 (October 14th)

« on: October 18, 2015, 09:38:57 AM »

Is it a bad thing that waveforms less than 32 are not accepted? I would think that such an undetailed wave would produce a lot of aliasing, but maybe that's what some people want.
Actually, a bitcrushed (NES style) triangle wave might produce interesting (and nasty) results when used for an FM operator...

I'll eventually add back the waveform with less than 32 samples.
But in the meantime, just copy and past each sample values in your text file to reach 32 samples. Should take you 1 minute 

1373

preenfm2 and preenfm3 / Re: New firmware 2.02 (October 14th)

« on: October 17, 2015, 06:30:32 PM »

The preenFM engine needs a "power of 2" number of samples. The goal of this interpolation is to make it accept any size of waveform.

If your number of sample is a power of 2 (32, 64, 128, 256, 512, 1024), there is no interpolation.

For the rest it interpolates to the closer bigger power of 2.
Source between 33 & 63 => processed waveform will contain 64 samples.
Source between 65 & 127 => processed waveform will contain 128 samples
...
Source between 513 & 1023 => processed waveform will contain 1024 samples

Just realilzed that in 2.02 waveform smaller than 32 are not accepted. 

1374

preenfm2 and preenfm3 / Re: [Resolved] My first preenFM2 metal case .. trouble shooting no audio

« on: October 17, 2015, 02:44:57 PM »

I found it.   
It was a shortcut between 2 solder points.

The blue one (see pics for color) responsible for sending the sample to the DAC and the close junction responsible for lightning the LEDs.
That must have distored the SPI signal which became ununderstable for the DACs.

I removed the tiny wire with my soldering and the sound came...
I'll send your PCB back. You can keep the extra one i sent you 

1375

preenfm2 and preenfm3 / Re: my appreciation and suggestions

« on: October 16, 2015, 10:48:18 PM »

Haha... LFO phases were a good sugestion 

You can already make a external vector mixer by controlling Filter Gain with NRPN.
http://ixox.fr/preenfm2/manual/midi/

If your DAW does not support NRPN (ableton live ?) you'll have to wait for CC support for the filter gain.

Xavier

1376

preenfm2 and preenfm3 / Re: my appreciation and suggestions

« on: October 16, 2015, 09:31:28 PM »

You cannot load the bootloader from the USB key as it cannot burn itself.
To upgrade the bootloader you have to enter DFU mode. Follow this :
http://ixox.fr/preenfm2/build-it/burn-firmware/

No plan for vector mixer : i remind you that the firmware is open source 
Eventually LFO phase on matrix destination, but can be complicated from some of the source. I have to check.
And yes i would need to add more CC controls.

1377

preenfm2 and preenfm3 / Re: my appreciation and suggestions

« on: October 15, 2015, 09:50:00 PM »

Latest bootloader is 1.11 and is available with the firmware 1.06.
http://ixox.fr/preenfm2/download/

I don't get the point having lfo phase as modulation destination as it's only used when you press a new note to initialize the phase.

No CC but NRPN - NRPN is automatic and free regarding the code 
MSB : 1
LSB : 68 + <LFO number>

No plan for global polyphony. That would be to have one FILTER per voice ?

1378

preenfm2 and preenfm3 / Re: New firmware 2.02 (October 14th)

« on: October 15, 2015, 09:19:57 PM »

Just pushed 2.02 to git.
https://github.com/Ixox/preenFM2

1379

preenfm2 and preenfm3 / Re: New firmware 2.01 (October 10th)

« on: October 15, 2015, 04:38:05 PM »

Thanks for all the feedback 

As no major problem occured, I'm going to make this 2.02 official.

1380

preenfm2 and preenfm3 / Re: New firmware 2.01 (October 10th)

« on: October 13, 2015, 10:59:09 PM »

Oh... and don't forget to delete you usr#.bin files once you installed 2.02 so that they are recreated with the new interpolation/normalization algorithm.