Patch Challenge #2 - What is it?

Your welcome to post as many entires as you wish

so, a little more detail , and some of the things I learnt along the way


Different audio processing


originally, Id planned to switch between the two filters (and possibly more) using the VCSWITCH,
but that didn't work out because as its switches it clicks due to audio discontinuities.
(which i thought I might be able to mask with a LP filter, or ENV/VCA but that didnt work out)
Instead I chose to crossfade.... this is pretty simple,
I had a envelope i wanted to use to move between the two source (but could be an lfo or anything smooth),
which I fed into the 2ATT, then took out to one vca, and then the inverse to another vca .
.. then i mixed the two vcas outputs - viola




Chaotic 'modulation source'

so if Id of had the new 2ENV what I would have done is modulate the attack/decay of the envelopes,
but as i dont have one yet, I wanted something that had a bit of movement with a bit of complexity but not random.
so what I did was mix lfos and env ( 2 of each) via 2 vcas.
I cant change the rate of anything, but it meant it wasnt too static...
(the envelopes were sync'd but not the LFOs, and all had slight different rates)




Eurorack integration.


this went pretty well
I took the audio from the Eurorack (Plaits module), attenuated it a bit to not distort.
processed it in the AE rack, then I took 3 audio channels back to Eurorack (one via master module, the other via 4IO)
one channel had the modulated signal for going into Rings (a resonator),
the second was a FX signal (multiFX) to go into the main mix.
the final one used as a FM source for Elements.
for all except the FM modulator, I added gain on the Eurorack, to get it up 'normal' eurorack levels which are hotter.


Also as I wanted this in sync with the Krell patches 'generation', I also took the end of cycle trigger over to the AE rack via CV IO,
this was triggering the various envelopes mentioned above.

I did have some issues with this,
first i think the jack into the 4IO didn't 'connect' properly, and I had no signal (took a while to figure this out!)
also it seemed to be one of my AE mults was 'acting up', triggering some of the envelopes but not others, changing the order in the mult,
seem to fix it...

anyway, in the end worked well, and I ended up with a spaghetti of both patch wires on AE modular, and patch cables in Eurorack  

you can also see its very true...

You can never have enough VCAs 

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p.s. you might notice Ive taken the AE Eurorack adapter out of my Eurorack case,
whilst this was working well in the end, I decided it was more flexible to have AE separate from Eurorack, and just crosspatch via longer 3.5mm patch cables.
I quite enjoy doing this, as it means I can also focus on one rack at time  

Aah, damnit, I didn’t manage to record anything this week. Been away from the music wardrobe too much. I might still post something for this challenge later this week and then hopefully also for the new one

I also haven't been able to produce anything that I feel comfortable sharing. Not for lack of trying though, I had 4 failed attempts so far! It all starts out with good intentions, then it just seems boring so more patch cables get added until it all drowns in a complete mess. Then all the cables get removed (I'm getting good at this!) and fresh start with a clean slate next day...

I think am on the right track now by including my very limited and half broken Eurorack and I may be able to turn this into something usable over the next few days.

It has been a bit frustrating, but also so much fun! I just don't know if I can always deliver something in just a week, so maybe the patch challenges could be seen as open-ended?

I would love to see more people trying their hands on them in the weeks, months and hopefully years to come! And I'm sure to come back to them as my knowledge grows.

ok, so this was the idea that came to me ... pretty much whilst I was writing up how to do cross-fading yesterday

listen to this in stereo, preferable with headphones to appreciate the stereo imaging which is what this patch is about...
I start pretty plain, then later start wiggling things, and messing with the delay line... which makes it a bit more, errmmm, weird  



so the idea is pretty simple (though takes a few patch wires ) 

I take an input signal (coming from Rings/Plaits on my Eurorack) 

then create pass this thru an 'fx chain'  (I used wavefolder->delay, but can be anything you want) 

now create a cross-fade driven by an LFO, between this wet and dry signal.
use this for the LEFT channel

now copy the cross-fade, but this time use the invert which LFO signal you use
(to make these VCAs cross-fade in an inverse relation to the ones used for the left channel) 
use this for the RIGHT channel

what we now have is the wet and dry signals bouncing left and right, against each  other....

in this 'demo' , I went quite extreme to 'show it off', but with more subtly , especially with the modulating effect, you can get a variety of effects, where the image is moving around the stereo image.
(e.g. try using a delayed version of the lfo, and perhaps just a simple filter... you can almost make percussive sounds, sound like they have a 'shadow' ) 


badly drawn image time  

Way too late, but I still wanted to give it a go, doing some more distorted feedback loop stuff



I patched the iPad's audio from Korg Gadget, playing a Piano and Drum loop, into the AE Modular to the Nyle filter's LP input, then from the output back into the BP input and from the output again through the Wasp filter, Wavefolder and LoFi Delay (all CV modulated) to the HP input On the way, I also created an inverted audio signal using the 2ATT module. I switch between this and the regular signal on every beat, synced to the iPad simply via MIDI clock (using a USB-to-DIN MIDI cable and the Apple Camera Connection Kit). This signal inversion creates a different sound inside the feedback loop. At the end I also added some MultiFX Chorus with Reverb. It all gets really crunchy. Haha!

I agree, I enjoyed that one and you've given me a thought for a possible future challenge.