Topics

16

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)

17

preenfm2 and preenfm3 / combo 127

« on: May 28, 2019, 11:58:30 AM »

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

18

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 ?

19

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

20

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