Cold Mac Case Study 03: Stereo Distortion with the OR and AND Circuits
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- Опубліковано 2 жов 2024
- Bringing back my ill-fated series on practical applications for the Mannequins Cold Mac Eurorack module. A lot of the documentation around this module is very complex and difficult to digest, so in this series i attempt to demo musical uses for this box of mysteries.
This one's very easy but I use it a lot, distortion! I demo'd it here with sine wave synth pad sounds for the full wash of noise, but it's also great for glitchy percussion.
Further reading on Cold Mac is available here: github.com/whi...
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I love cold mac , enjoyed this video very much. Thank you!
Feeding the LFO into the same audio path is genius! But how does it work?
Mixing subsonic signals (lfos) with audio rate signals is one of my favourite techniques. All sorts of weird and wonderful things happen.
Here, the LFO sums with the audio in the mixer, pushing it up and down across the 0v axis. This is exactly what happens if you put that LFO into the Survey input too, so the end result is the same.
You could take it further and add another LFO to the mixer, take the Mac output run it through an attenuverter and into the survey input. Heaps of room for further experiments on this patch 👍
@@Earther._ Hmmm I get the Survey control but still the mixing with audio..that's so different! Is it because of how the Or/And circuits behave?
@@MrMarcLaflamme the end result is yeah, instead of moving the 'slice point' with the survey knob providing an offset voltage, we're adding that offset at the mixer while the survey's slice point remains static at 0v.
As long as the mixer has sufficient headroom and is DC coupled, the end result is the same.
I've been asked about this a number of times actually, maybe I'll do a video demoing it. I first got the idea from DivKids Instruo Tanh demo in which he mixed an LFO into audio to create a pulse width modulation effect.
@@Earther._ Ah so the audio signal itself is following the LFO path which pushes the whole signal above or below 0? I guess I can just wait for the explanation video :-)
@@MrMarcLaflamme Correct!
The cold mac manual mentions you can use this as a feedback oscillator, and gives a patch example. But there's no videos online; could you do a demo of that?
Also, it's easy to use the cold mac as a simple voltage-controlled panner. What happens when the cv source is a duplicate of the mono audio in?
ha - just so happens i'd planned to do the feedback oscillator patch next!
re: your patch question, the waveform would be split between the two outputs, same effect as plugging mono audio into the OR input and listening to the OR and AND output as a stereo output. A cool stereo-izing effect for sure
@@Earther._ I believe that the sound is slightly different than the and/or stereo-izer; it could be fun to compare.
thank you so much for all these tutorials.. please, keep sharing more of this. I've just receive my new coldmac and it's sort of intimidating module that with your help is transforming into something really useful..
really good !