Jihel
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knobs, knobs, and knobs !
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Post by Jihel on Sept 20, 2020 18:34:48 GMT
I come from the dark ages  (and dark faced synth) where there was no computer, no internet, and no "logic" modules. I did some research on the internet but I find only really cryptic explanations (cryptic for me!).  I need clear explanations about these two modules, the OR2X4 module, and the most cryptic  (for me!), the LOGIC module.
Please, no math, only clear explanations on using them on synth...
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Post by NightMachines on Sept 20, 2020 18:46:44 GMT
I made this video for Eurorack, but it applies the same to AE Modular as well:
It’s basically simple conditional statements:
AND: If signals 1 AND 2 are high, output a gate/trigger.
OR: If signals 1 AND/OR 2 are high, output a gate/trigger.
XOR (exclusive OR): If signals 1 OR 2 are high, output a gate/trigger
They let you create gates/triggers at certain system states or combine trigger/gate signals from different sequencers for example.
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Lugia
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Post by Lugia on Sept 20, 2020 22:37:02 GMT
Boolean rules of thumb:
OR gates pass either input A OR B where they're present at their respective inputs. Note also that there are "diode ORs", which aren't proper Boolean gates but pulse adders which behave more or less like OR gates.
AND gates pass only when A AND B are present NOR gates only pass a gate when NEITHER A OR B are present NAND passes only when NEITHER A AND B are present
OR gates can act as NOR by inverting the gate output AND gates can act as NAND by inverting the gate output.
How this gets fun is when you start using Boolean gates to screw with timing pulses. Aside of the basic Boolean rules above, there's not that much to learn as far as theory and such...this is more one of those things where you have to screw around with them to get a clear idea of what YOU want to do with them. Sort of an endless arcade of timing-tinkering.
Also, try 'em at audio frequencies with pulse waves. You'll see why once you do...
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Post by admin on Sept 20, 2020 23:49:43 GMT
Also, try 'em at audio frequencies with pulse waves. You'll see why once you do...
Which is what I did in this video called "Lunetta's Dream" which is of course a reference to Lunetta Synths which are mostly DIY contraptions that use various logic CMOS chips to create sounds and rhythms. |
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Jihel
Full Member
knobs, knobs, and knobs !
Posts: 241
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Post by Jihel on Sept 21, 2020 9:04:16 GMT
Which is what I did in this video called "Lunetta's Dream" which is of course a reference to Lunetta Synths which are mostly DIY contraptions that use various logic CMOS chips to create sounds and rhythms. Really nice track !  I enjoy the groove and the overall feeling... |
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Post by MaxRichardson97 on Sept 21, 2020 10:22:38 GMT
One thing that I don't quite get is the idea of feeding CV signals (LFO, ENV) to the OR2X4. What would happen then? Would it chose the highest signal, like a Maths module?
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Lugia
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Post by Lugia on Sept 22, 2020 1:12:34 GMT
One thing that I don't quite get is the idea of feeding CV signals (LFO, ENV) to the OR2X4. What would happen then? Would it chose the highest signal, like a Maths module? Not as such. It acts more like an adder when you do that. |
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Post by sycophante on Sept 22, 2020 10:08:24 GMT
One thing that I don't quite get is the idea of feeding CV signals (LFO, ENV) to the OR2X4. What would happen then? Would it chose the highest signal, like a Maths module? Not as such. It acts more like an adder when you do that. Thanks for the answer! but what is an adder ? |
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Post by admin on Sept 22, 2020 11:15:09 GMT
One thing that I don't quite get is the idea of feeding CV signals (LFO, ENV) to the OR2X4. What would happen then? Would it chose the highest signal, like a Maths module? Hi, so I tried this just now and can report that the OR2X4 only passes on the high signal of an incoming LFO or ENV. It's really only made for trigger signals. A triangle LFO will become a gate on/off and if you input different ones then you will basically add more and more gates. |
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Post by spacedog on Sept 22, 2020 13:01:13 GMT
One thing that I don't quite get is the idea of feeding CV signals (LFO, ENV) to the OR2X4. What would happen then? Would it chose the highest signal, like a Maths module? Hi, so I tried this just now and can report that the OR2X4 only passes on the high signal of an incoming LFO or ENV. It's really only made for trigger signals. A triangle LFO will become a gate on/off and if you input different ones then you will basically add more and more gates. To me, logic modules are just 1-bit convertors. You can put all sorts of combinations of signals into all manner of combinations of logic and you're only ever going to get an on (e.g. +5V) or an off (e.g. 0V) coming out the end of it all - i.e. one bit/two levels.
Hence, you're only ever creating a Gate signal in my way of thinking - no matter how you rig it all up. Of course, you can get some really interesting patterns or even patterns that don't seem to repeat (with our limited attention span). It can also be unpredictable, which is part of the fun, or eminently predictable if you're content to think Boolean. I've used them to combine signals with the aim of creating interesting clock signals for the SEQ16.
Predictable unpredictability, or unpredictable predictability - who knows...?
Start doing that fast enough and the inherent frequency of the Gates can take on a different purpose, but it's still just a train of Gates. |
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Lugia
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Post by Lugia on Sept 23, 2020 1:41:08 GMT
Not as such. It acts more like an adder when you do that. Thanks for the answer! but what is an adder ? Sort of like a fixed-level mixer, but it deals with arithmetical operations on signals by combining the inputs additively. So, if you fed a VCO and a LFO into an adder, in _theory_ it should output the VCO's signal with the LFO curve imposed on it. But given that this is synthesizers, there'll always be a little "wiggle room" on this being a hard and fast rule. |
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Post by MaxRichardson97 on Sept 24, 2020 10:20:26 GMT
One thing that I don't quite get is the idea of feeding CV signals (LFO, ENV) to the OR2X4. What would happen then? Would it chose the highest signal, like a Maths module? Hi, so I tried this just now and can report that the OR2X4 only passes on the high signal of an incoming LFO or ENV. It's really only made for trigger signals. A triangle LFO will become a gate on/off and if you input different ones then you will basically add more and more gates. Thanks! That's that cleared up, I wasn't sure whether it would or not! |
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(and dark faced synth) where there was no computer, no internet, and no "logic" modules.
(for me!), the LOGIC module. 
