Syngle cycle as guitar distortion :)

hey! just wanted to share something fun.
i have a nylon strings semihollow guitar (yamaha aex500-n) with active piezo that outputs a quite loud signal.
i plug it into one of the ins (and set preamp to x2) then i place a single cycle vco with some user waves i created with Wave Edit.
put its frequency to 0 and assign to the phase the IN1 (where the guitar is plugged), then adjust gain to taste (usually i start from 0.5).
you have a nice waveshaper similar to what we already explored with the sine vco, but this time with a nice collection of different shapes to choose from (you can even dare to scan them for some very ODD stuff!!)
of course you can do very similar stuff with the Sample Scanner unit but here you can load an entire folder of single cycles and scroll thru them until you find the distortion sound that suits you :slight_smile:


Great tip! Thanks.

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Sry about this, but do we really call the oscillators in the er-301 vco’s? I’m not to serious, just pondering, they sure can be voltage controlled, but in this case they are not :stuck_out_tongue: I guess dco would be more accurate maybe :slight_smile: or maybe voltage controllable dco’s. But dco often refer to analogue oscillators with digital controll haha. What a mess, and plz correct me. End of pondering.

Well, Brian just calls them oscillators, so that’s probably the official terminology:

But VCO, DCO, OSC - everyone will probably know what you’re talking about. :wink:

Yeah, oscilators is good and sounds good, pun intended , sry of I sound like some kind of nazi, and about the offtopic. Hyenas idea is awesome and the terms are in no way wrong tbh :slight_smile:

When you say OSC do you mean open sound control? :robot:

Sry, just had to!

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You mean that awesome spec’d way better than MIDI controller protocol that never really seemed to take off? Never heard of it. :wink:

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Good, me neither

ehehehheee :slight_smile:
well probably DCO is correct, given that external CV’s pass through an ADC before hitting the oscillators… but i tend to correlate DCO’s with the historical era synths with which they were introduced and usually just use “vco” as synonimous with “oscillator”

back on topic: Having a hard time getting musical results with this, i have to have the gains in the 0.01 range to avoid complete destruction of the source material, had similar results with the sample scanner, getting much better results with the sine osc tbh. any toughts?

might be the waveforms tough, just picked a couple by random from akwf

Was looking forward to have a more flexible distortion!

Try a Sine wave (for starters anyway)! Also, how’s your gain staging before it enters the ER-301; maybe try to attenuate before.

I actually just used samples inside of the 301 as source material , did som more testing and had better results, still have to keep the gains super low

well of course it depends both on whats your source material and what kind of waves you are feeding the table.
the more complex and rich both signals are the faster you reach a very full spectrum (ie: noise).think of it the same you think FM synthesis. the simpler carrier and modulator are the easier it is to find sweet spots :slight_smile:

Thanks so much for this tip. I have been wanting a sample scanner that could load multiple samples for a while. The waveshaping potential is enormous. being able to morph between distortion and folding sounds pretty cool. I tried it out by making 16 various tanh wave files. They went from more linear to less. Loaded them in and it worked beautifully. With the non continuous waves you have to keep the gain low enough to keep them from wrapping but with this method you can have waves of various response to make up for that.

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glad you like it! are you scanning them? if so, with which kind of modulator and at what rate? curious!

I was just moving dials by hand so far. audio rate modulation would be crazy I bet. I tried wavefolding with a sine wave and a triangle wave. It was cool being able to move from a more buzzy wavefolder to a smoother one. I bet a partially clipped sine wave would sound cool. you would get soft clipping and with more gain wavefolding. If the goal is less to maintain tonal qualities of the input you can get pretty wild with the gain. When using non continuous waves (like tanh) when the input goes over 5v it wraps back around, giving you a vertical edge. Mixing an lfo to offset the input will give some cool pwm type tones this way. When using continuous waves (sine, triangle) this wrapping works to our benefit because it makes the waves fold on themselves over and over.

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