Lokki contributions

Blindsmyth 2017-05-09 20:15:29 UTC #41

I use the AMT SS11A Preamp on the clean channel, with the output set to mixer (sets it to line level and has some analog cab sim).
Afterall I think feeding directly to the wave in and then filtering the output sound gives the best sound but still E F and F# are problematic.

Thx for your suggestions though, would be really cool to have simple octaver in Axoloti!

lokki 2017-05-09 20:32:40 UTC #42

one last suggestion:

can you try and put the hp filter at the beginning of the filter chain and set it to a lower frequency, something like 8.176 hertz

Blindsmyth 2017-05-09 20:38:43 UTC #43

hmm no not really betteR

lokki 2017-05-09 20:40:03 UTC #44

cool thanks, i have some more ideas but will try them directly with my guitar and post a guitar-centered solution, cannot promise anything will get better but who knows

lokki 2017-05-09 20:46:21 UTC #45

ok couldn't resist...try this:

or something similar, you get the idea. boost the low frequencies. play with the gain values in the mix. maybe also try to adjust the q on the lower lp row (and increase gain to compensate for the volume loss)

this is all untested...

Blindsmyth 2017-05-09 23:11:30 UTC #46

Ok just had something with this suggestion that worked for the lower notes but only the first octave of the guitar.

Then I tried to "improve" but can't recall how I set it up

lokki 2017-05-11 15:04:16 UTC #47

i had a go at this with my guitar (a tele) and i could easily get reliable triggering on the lower notes, but the e on the d string was jumping like crazy. so i guess it depends a lot on the guitar. i will have a go with a bass as well (i'm a bass player) i own a mxr octaver for bass and it tracks very well. but i assume bass is easier to track because it has less overtones. also i have a pcb and all the parts for the u-boat octaver and once that is built i can compare it to my axoloti implementation.

valmir 2017-05-12 10:58:11 UTC #48

Hi there!
I did a patch working very closely to what you did with your custom objects, but with standard objects at k-rate, and yes, the guitar makes a huge difference on mine as well... humbucker - neck position - closed tone is the way to go, even better with flatwound strings. I guess string noise gets translated in false positives on the square wave, but this is something happening also on many analog octave dividers.
Can't test your objects right now, but I will ASAP, they look very promising. Thanks for sharing!

lokki 2017-05-12 11:15:16 UTC #49

cool! let me know how it goes. also check out my octaver patch, it's easier then with guitar input to see there what it does to the original waveform...

valmir 2017-05-14 13:23:33 UTC #50

I played a little with your octaver patch, great fun. The stitcher to me sounded a bit more synthetic than expected, but nicely... I also patched something mixing things with my previous krate version, check it outoctaver.axp (6.8 KB)

lokki 2017-05-14 17:06:56 UTC #51

yeah, the stitcher only really works "perfectly" with synthesised source materials, in my example octaver patch it sounds very nice i think. for real world signals like guitar it distorts quite heavily. but this is the same on oc-2 and u-boat as well. you absolutely have to filter after the stitcher if you use guitar or something. but you get a waveform that reacts to your playing, which is nice. also you get dynamics for "free"...

your approach is interesting as well, will have a play with it tomorrow. why don't you use the unfiltered guitar signal as source for the xfade? i also had a couple of ideas to improve filtering/tracking, will test those as well

valmir 2017-05-17 17:30:19 UTC #52

It just sounded better for my purpose (oc-2 emulation)

Come on!!! We need that!

I thought I'll post here some patches I made (and that got a little better with your objects), always in the realm of octavers and guitar to synth, I hope you may have fun with them...

A better OC-2 emu octaver.axp (8.7 KB)

A multi-squarewave generator from guitar input plus filters square.axp (13.9 KB)

An extremely naive way to sound like a gr-300 with the Pat Metheny sound... saw.axp (12.4 KB)

Actually they're all naive, so any thought/advice is very welcome.

lokki 2017-05-17 19:52:57 UTC #53

patience, sorry. i will get there. my first naive approach did not yield any better tracking. maybe i will first have to build the real thing before adapting it. as i said i have the pcb and parts for the u-boat.

Blindsmyth 2017-05-17 22:20:43 UTC #54

@valmir
you're patches sound pretty great, thx for sharing them here!

@lokki
this is a great start alreay looking forward to see this thing grow!

valmir 2017-05-22 14:12:46 UTC #55

Hey @lokki! I just realized that changing the counter in your divider object to 3 or 4 will give me instant sub-fifth and sub-octave, so I have to thank you twice more...
Man, if you ever would implement a multiplier (something like drj/seq/clk_mul but s-rate) you'd be my monophonic synth superhero...

lokki 2017-05-22 18:32:22 UTC #56

yeah, @valmir i know that is an easy addition, i did only not include it, because it does not work well with the stitcher... but i could just make a dedicated divider object with sub (octave, fifth, whatever) control.