Messages

241

preenfm2 and preenfm3 / Re: New filters

« 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)

242

preenfm2 and preenfm3 / New filters

« on: August 11, 2019, 12:57:50 AM »

hi,
I finally dared to dig the preenfm code, and, it was worth it 
here is a firmware attached, that include some more filters :
- lp2 : lp with double filtering
- same for hp2 and bp2
- tilt : adaptation of this : https://www.musicdsp.org/en/latest/Filters/267-simple-tilt-equalizer.html
- allpass : simple allpass filter, need some more work, not sure what to do with this one...
- saturation : this : https://www.musicdsp.org/en/latest/Effects/42-soft-saturation.html
- sigmoid : a classic tanh distortion : https://www.musicdsp.org/en/latest/Other/178-reasonably-accurate-fastish-tanh-approximation.html

I hope you like it!

your ideas and bug report are welcome.

If you want to see the code, here it is : https://github.com/pvig/preenfm2

(edit 2019-09-11 12:45:37 PM : updated attachement)

243

preenfm2 and preenfm3 / Re: Latest firmware : 2.10 (2019 june 13th)

« on: August 04, 2019, 09:40:35 PM »

ok, thanks, i may try it myself ; i found the filter code part in the git repo. I'm not particularly fluent in C but it seem doable, so we'll see. I'll let you know if i come across something interesting.
cheers !

244

preenfm2 and preenfm3 / Re: Latest firmware : 2.10 (2019 june 13th)

« on: August 03, 2019, 04:04:31 PM »

hi!
I would also love to have some more filter flavour on the pfm2 , so here is what i found :

a biquad implementation, in C, with LPF,  HPF,  BPF, NOTCH, PEQ, LSH,  HSH
https://www.musicdsp.org/en/latest/Filters/64-biquad-c-code.html

a 3 band equalizer
https://www.musicdsp.org/en/latest/Filters/236-3-band-equaliser.html

a moog ladder lightweight approximation, with lp, bp, hp output :
this one may be really great, even in 1 or 2 pole mode : mixing the 3 output may be also interesting...
https://www.musicdsp.org/en/latest/Filters/145-stilson-s-moog-filter-code.html

finger crossed 

245

preenfm2 and preenfm3 / Re: New F.M. physical materials tutorial video on Youtube

« on: June 14, 2019, 11:03:09 AM »

hi NonovYurbiz,
no, i'm not Cevorkum..
to simulate feedback on the pfm2, you can use the different waveforms :
the more feedback, the more harmonics will be added, so for a medium feedback, use the sawtooth waveform, for high feedback, use noise.

246

preenfm2 and preenfm3 / Re: New F.M. physical materials tutorial video on Youtube

« on: June 08, 2019, 06:31:50 PM »

a bump to this underated thread..
thanks you element-s for posting, very nice work, really inspiring !
just found the other videos, i like it all :
https://www.youtube.com/watch?v=dXo_493fEpU
https://www.youtube.com/watch?v=_xL3qr-9-ZE

247

preenfm2 and preenfm3 / combo 127

« on: May 28, 2019, 11:58:30 AM »

on my pfm2, loading combo 127 just freeze the synth.

248

preenfm2 and preenfm3 / Re: arp mode change by CC

« on: February 10, 2019, 11:00:29 PM »

yes, it works fine with the right values !
many thanks !

Patrice

249

preenfm2 and preenfm3 / arp mode change by CC

« on: February 06, 2019, 09:31:58 PM »

hello,
I can't change the arp mode with CC 97 on instruments 2,3,4
on instr1, it works, but not as expected : any CC value change the mode to external..
(os 2.09 o)

did i made something wrong ?

250

preenfm2 and preenfm3 / Re: hang with fast program change

« on: October 31, 2018, 12:46:54 PM »

ok, I had a closer look at it :
connection by midi din digitakt -> preenfm
digitakt send midi clock.

with bank select 0, i then send fast program changes, everything is fine,
with bank select 1, after some program changes, it crash with the same error message I sent previously, even when changes are slow (~1/second)
with bank select 2 or 3, after some program changes, it just freeze, without error message.

without clock send, the crash are less frequent, but still happen..

251

preenfm2 and preenfm3 / hang with fast program change

« on: October 29, 2018, 01:34:17 PM »

Hi !
just seen the new os update, thanks for that.
Sorry being too late for the release but i found a bug  : I use a digitakt to send program change to the preen, it send very fast program change when turning the encoder, it work fine as long as no bank data is sent from the digitakt. If a bank is defined, it crash quite fast :
PFM2 v2.09 o
LR: 0x0805B019
PC: 0x0807F536
r0: 0x20020004

252

preenfm2 and preenfm3 / Re: preenfm2 editor 2.08.4 (November 25th 2017)

« on: June 27, 2018, 10:52:15 PM »

about the bug reported by mbng,
as workaround, i use a puredata patch that send All note off (CC#123) or Hold Pedal = 0 (CC#64)
one or the other, depending what is needed.

I hope it help.

note : using OSX 10.9

253

preenfm2 and preenfm3 / Re: midi out not working (solved)

« on: June 18, 2018, 09:50:30 AM »

Yes, exactly, the resistor i modified is the closest to the ld1117.

254

preenfm2 and preenfm3 / midi out not working (solved)

« on: June 03, 2018, 05:40:32 PM »

hi !
I'm a proud new owner of a preenfm2, I really like it..
thanks for making it happen !

I wanted to let you know about a trouble I encountered about midi out :
in my built I could not get midi out to work, after some head scratching I found that page :
https://www.pjrc.com/teensy/td_libs_MIDI.html

according to that page, the midi out resistors values should not be the same when using 5v or 3.3v -> in the preenfm, the resistor are 220 ohm and should be 47 ohm as the voltage is 3.3v on that zone.
so i tried to put a 220ohm in parallel on the midiout pullup resistor : bingo ! midi out is now seen by my midi interface (edirol UM-2ex)

best regards
Patrice