Messages

1276

preenfm2 and preenfm3 / Re: Raystar oled : Screen Issue - what I am doing wrong?

« on: August 27, 2016, 04:58:27 PM »

May I ask a question ... can the screen error have a correlation to the use of the encoders? I had the screen issue only during twiddling the knobs. I had the PreenFM2 run for many hours - doing some burn-in like testing - never had the screen failure.

If you don't turn any knob, the display activity is limited to note on/off.
When you turn knobs, the display receive much more data to deal with. There's so more possibilities of a corrupted data.

For the reminder, only one corrupted data can turn the display in a broken state until you reboot.

1277

preenfm2 and preenfm3 / Re: Screen Issue - what I am doing wrong?

« on: August 26, 2016, 10:17:43 AM »

Yes. I confirm that the Resistor change does not solve it. I have made the mod on all the units. And some clients still had it. Running wires directly to the Screen was the only way it went better. But I am not sure its a cure.

OK. Thanks for the confirmation.

other, maybe esoteric question, is there any preenfm2 without metal case and raystar oled that has this problem? ardi wrote about the metal shield adding whining noise in some cases. maybe the raystar is "problematic" with metal cases???

I'll put a Raystar oled in my metal box tonight.... Thanks for the idea.

1278

preenfm2 and preenfm3 / Re: Screen Issue - what I am doing wrong?

« on: August 26, 2016, 09:51:12 AM »

Thanks Ardi for the detailed feedback.

Do you double confirm that the OLED mod that lower the 5V input voltage does not fix the issue ? You saw a moded preenfm2 (22 ohm+pin 2 cut+2 to 15 OLED wring) that still has this problem ?

Just read the LXR discussion. The LXR problem was a boot problem, once the Raystar boots it was OK, if it failed that was from the begining.
The preenfm2 problem when it occures, occures after the OLED worked for some time.
Does not sound like the same.

If you have the URL about this on other forums, i'd like to read.

Thanks,

Xavier

1279

preenfm2 and preenfm3 / Re: stuck note! was: aftertouch bug? (or general modulation)

« on: August 24, 2016, 02:16:48 PM »

Lokki's latest message before split :

"xavier, success!!! i cannot make it glitch anymore :-) will play some more with it, and let you know if there is something unusual, but it seems pretty stable to me."

 

1280

preenfm2 and preenfm3 / Re: Re: stuck note! was: aftertouch bug? (or general modulation)

« on: August 24, 2016, 02:04:42 PM »

Cool.
Just pushed the "2.05B3", i didn't have any reason not to do it

Xavier

1281

preenfm2 and preenfm3 / Re: Re: stuck note! was: aftertouch bug? (or general modulation)

« on: August 24, 2016, 11:53:26 AM »

Thanks for testing. Good news 

Compiling and flashing the firmware is not complicated.
Clone the git sources :
https://github.com/Ixox/preenFM2

Install arm gcc 4.7 :
https://launchpad.net/gcc-arm-embedded/4.7

Add the arm gcc bin path to your PATH.

run "make" without parameter and you'll have the list of available target.
Once it's compiled, the fastest way to flash is to put the preenfm2 in  "bootloader>DFU" mode and run "make installdfu".

The Beta version is not yet pushed to github so you'll have the 2.03.

1282

preenfm2 and preenfm3 / Re: Pitchbend response?

« on: August 23, 2016, 11:14:25 PM »

Thanks for your feedback Lokki. 

What you can do is to use 2 matrix rows with PB as source, they will be added : 10 + 2 = 12.
You can even do : 10 + 8 = 18 = +-36 semitones 
(I'm expected it to crash after 51 semitones as there's no checking for reading outside the exp2 array in this Beta)

I may have an idea in the following days, but for the moment, i have no solution to make the harmonique shifting for the PB only.
I'll  add an option but that will be ALL or NONE.

Xavier

1283

preenfm2 and preenfm3 / Re: stuck note! was: aftertouch bug? (or general modulation)

« on: August 23, 2016, 10:53:30 PM »

If you have time to try this 2.05B3....
That was an other problem of too short notes, when the preenfm2 received the noteOff just after the noteOn without starting the audio between.
These too short notes are now also ignored.

Thanks for your help,

Xavier

1284

preenfm2 and preenfm3 / Re: stuck note! was: aftertouch bug? (or general modulation)

« on: August 23, 2016, 10:26:51 PM »

Yep, it's worse than before 
I'm still on it.

1285

preenfm2 and preenfm3 / Re: stuck note! was: aftertouch bug? (or general modulation)

« on: August 22, 2016, 11:47:40 PM »

This puredata patch is a gem for debuging voice allocation Thanks again 
I attached a beta firmware that should not play anymore the low frequency ghost note.

Explanation : when a voice is playing and when a new midi note is received, the new note does not start right away (which would create an audio "click").
So the preenfm2 use some time (between 0 and 200 samples depending of the current envelope status) to mute progressively the current note before playing the new one.
With a very short new note, the preenfm2 receives noteOff while the previous note fades out and before the new note is acutally started.
This is where the bug was.

The fix i have for the moment should work in most situation: in case it receives noteOff before the note actully starts, the new note is never played.
Which makes weird behaviour with the posted PD  patch (increase a little the note duration and it's fine) but that should work in most real life situation.


Xavier

1286

preenfm2 and preenfm3 / Re: MIDI Channels and sequencing PreenFM with external sequencer

« on: August 22, 2016, 11:39:37 PM »

There should be a default preset.
My guess is that the number of voice of instrument 2 (midi channel 2) is set to 0.

If not, do you see a '2' showing up on midi note on ?

1287

preenfm2 and preenfm3 / Re: most useful user waveforms

« on: August 22, 2016, 09:59:36 PM »

I can answer your last question :

If your waveform has between 513 and 1024 samples, it will be imported as a 1024 samples waveform, with interpolation if needed.
If your waveform has between 257 and 512 samples, it will be imported as a 512 samples waveform, with interpolation if needed.
etc....
32 samples minimum.

1288

preenfm2 and preenfm3 / Re: stuck note! was: aftertouch bug? (or general modulation)

« on: August 22, 2016, 06:51:58 PM »

Thanks a lot for the puredata patch.
I can reproduce it... I'll work on that asap.

(In the meantime don't forget that pressing MENU+BACK at the same time, reset the note engine, so this stops the stuck note..).

Xavier

1289

preenfm2 and preenfm3 / Re: Pitchbend response?

« on: August 21, 2016, 06:19:34 PM »

I have something working.
I thought all the frequency modifications that come from the matrix should modify the frequency that way.
Whatever source you send to the o*fr target, the matrix multiplier is now the number of tone you want.
lfo1 > 0.5 > o*fr : 1 semitone oscillation around the main frequency
PitB > 6 > o*fr : The pitchbend shift one octave up and down.

"2.05 Beta1" firmware attached,
Let me know if you find any problem.

Xavier

1290

preenfm2 and preenfm3 / Re: stuck note! was: aftertouch bug? (or general modulation)

« on: August 21, 2016, 09:15:25 AM »

i will try to reproduce the problem with a puredata patch on linux and osx, do you know puredata (http://msp.ucsd.edu/software.html)? if so i could share the patch and you can try it on your linux machine as well.

Would be great. Let me know if you find something.