Hi, I'm new to this world of modular stuff. I've got 4 mf's: 101,102,103,107.
I'm really into patching them up and getting crazy wacky sounds, but some of the sounds are pretty unpredictable. Sometimes I get a popping or ticking when the lfo peaks (still don't know the right lingo, i guess).
Any help? Is it a matter of attenuation?
popping from lfo
- _DemonDan_
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Re: popping from lfo
Hi Liquid Guy,Liquid Guy wrote:Sometimes I get a popping or ticking when the LFO peaks...
Is the LFO Shape Square, Saw, Ramp, or Random?
All four of those shapes have a flat, vertical (near instantaneous) transition in voltage, which can cause pops and ticking in some circumstances.
_ _DemonDan_ _
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Re: popping from lfo
Yeah, I know the waveshapes and understand that the ticking originates from this spike in the wave. Of course it doesn't happen with a triangle wave.
Is there a way to prevent it? I tried patching the lfo thru an overdrive pedal so i can lower the volume (fake attenuator) , but got no lfo at all. Maybe a volume pedal? I'm a guitar player in case you haven't guessed yet...
Is there a way to prevent it? I tried patching the lfo thru an overdrive pedal so i can lower the volume (fake attenuator) , but got no lfo at all. Maybe a volume pedal? I'm a guitar player in case you haven't guessed yet...
101102103104105107251
- Kirneh Ness
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Re: popping from lfo
My guess is that this will not work. Most guitar pedals are designed for processing sounds in the audio domain, and not in the low (non audible) frequencies as an LFO sends.Liquid Guy wrote:Yeah, I know the waveshapes and understand that the ticking originates from this spike in the wave. Of course it doesn't happen with a triangle wave.
Is there a way to prevent it? I tried patching the lfo thru an overdrive pedal so i can lower the volume (fake attenuator) , but got no lfo at all. Maybe a volume pedal? I'm a guitar player in case you haven't guessed yet...
You probably don't want to hear this, but attenuation is featured on the CP 251, which incidentally is a great piece of gear.
Guitars. Moog Grandmother, DFAM, Subharmonicon, Minitaur, Slim Phatty, Moogerfoogers 101, 102, 103, 104M, 107, 108M and CP-251. Yamaha CS-15. Roland JUNO 106. DSI Tetr4. Arturia Beatstep Pro. Korg ARP Odyssey Module Rev1. Dreadbox NYX 2.
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Re: popping from lfo
You're right, I dont want to hear this though I would definitely like to have one!You probably don't want to hear this, but attenuation is featured on the CP 251, which incidentally is a great piece of gear.
I'll look into building an attenuator, I build guitar pedals so I guess I can do it...
101102103104105107251
- latigid on
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Re: popping from lfo
What you want is a lag processor or low pass filter to smooth the sharp transitions. It's very easy to make a passive LPF with just a resistor and a capacitor, they can even be built into 1/4" cables.
- _DemonDan_
- Posts: 1273
- Joined: Mon Nov 16, 2009 4:52 pm
Re: popping from lfo
It really isn't about attenuation (or peaks either); it's far more about the rapid voltage change over time.Liquid Guy wrote:Is it a matter of attenuation?
Sure, as you attenuate the LFO's amplitude closer and closer to near zero, it won't bug you as much, but it won't have very much of an effect either.
("Well, there's Spam, eggs, sausage, and Spam, that's not got much Spam in it.")
And, as suggested, you could run it through a Lag Processor (like the one on the CP-251). This will add a slope to the side with a vertical edge. But you're just making the LFO closer to the waveshapes that don't bother you.
One new suggestion: If you end up getting an MF-104M or MF-108M, they both have an extra LFO Waveshape (that you can only get to via MIDI) that's Random but without the steep edges.
_ _DemonDan_ _
Re: popping from lfo
_DemonDan_ wrote:It really isn't about attenuation (or peaks either); it's far more about the rapid voltage change over time.Liquid Guy wrote:Is it a matter of attenuation?
Sure, as you attenuate the LFO's amplitude closer and closer to near zero, it won't bug you as much, but it won't have very much of an effect either.
("Well, there's Spam, eggs, sausage, and Spam, that's not got much Spam in it.")
And, as suggested, you could run it through a Lag Processor (like the one on the CP-251). This will add a slope to the side with a vertical edge. But you're just making the LFO closer to the waveshapes that don't bother you.
One new suggestion: If you end up getting an MF-104M or MF-108M, they both have an extra LFO Waveshape (that you can only get to via MIDI) that's Random but without the steep edges.
Good points Dan! Remember that the CP-251 also generates the Smooth Random wave (not tap tempo tho). I sold mine a while back and miss it.