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Slowing Down an LFO's Rate Below 0.01 Hz
Posted: Wed Dec 28, 2022 5:48 pm
by Amine_Belkhouche
Hey everyone,
Is there a way to slow down the rate of an LFO beyond 0.01 Hz?
I have Umbrella Modular's LFO collection and it provides outputs that divide the rate by 2, 3, and 4, which for the most part does the trick for me. However, I was wondering whether there are some patching techniques that could allow you to do something similar and perhaps more continuous.
Re: Slowing Down an LFO's Rate Below 0.01 Hz
Posted: Wed Dec 28, 2022 6:16 pm
by ColinP
You can feed a negative CV to a standard LFO to make it go lower.
Unfortunately CA's documentation for the LFO is several years out of date so I can't give you specifics about the FREQ CV input as I'm too busy to probe further at the moment.
https://docs.cherryaudio.com/cherry-audio/lfo
But a quick test shows this...
- LowLFO.png (352.88 KiB) Viewed 3602 times
This uses a very long sync pulse to force CV Watcher to sample at a much lower rate than normal and you can see that the yellow trace is at a much lower frequency than the red one due to the negative CV fed to the LFO.
Re: Slowing Down an LFO's Rate Below 0.01 Hz
Posted: Wed Dec 28, 2022 7:02 pm
by Aarnville
Amine_Belkhouche wrote: ↑Wed Dec 28, 2022 5:48 pm
Hey everyone,
Is there a way to slow down the rate of an LFO beyond 0.01 Hz?
I have Umbrella Modular's LFO collection and it provides outputs that divide the rate by 2, 3, and 4, which for the most part does the trick for me. However, I was wondering whether there are some patching techniques that could allow you to do something similar and perhaps more continuous.
This is a topic on the Facebook group today. One suggested solution is this free module:
https://store.cherryaudio.com/modules/mini-lfo-1
Re: Slowing Down an LFO's Rate Below 0.01 Hz
Posted: Wed Dec 28, 2022 7:24 pm
by martb
Not free, but has a maximum cycle length of 166 minutes!
https://store.cherryaudio.com/modules/mini-sloth-lfo
Re: Slowing Down an LFO's Rate Below 0.01 Hz
Posted: Wed Dec 28, 2022 8:22 pm
by ColinP
Curiosity got the better of me so I tested the standard LFO's FREQ CV input and it seems to use V/OCT as one might expect. So -5 V can make it run five octaves below 0.02 Hz or about one cycle every 26 minutes and I'm pretty sure you just need to feed it with more negative voltages to go as low as you can imagine.
I understand why people might want LFO rates that cycle maybe once an hour but what's the practical application of going further?
Re: Slowing Down an LFO's Rate Below 0.01 Hz
Posted: Fri Dec 30, 2022 9:34 pm
by Amine_Belkhouche
ColinP wrote: ↑Wed Dec 28, 2022 6:16 pm
You can feed a negative CV to a standard LFO to make it go lower.
Unfortunately CA's documentation for the LFO is several years out of date so I can't give you specifics about the FREQ CV input as I'm too busy to probe further at the moment.
https://docs.cherryaudio.com/cherry-audio/lfo
Thank you so much Colin, this is what I was looking for!
Re: Slowing Down an LFO's Rate Below 0.01 Hz
Posted: Fri Dec 30, 2022 9:38 pm
by Amine_Belkhouche
Thank you for pointing this out, I was just checking it out the other day, here it is for future reference:
https://www.facebook.com/groups/2689074 ... 720227040/