E-RM Polygogo

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freemod
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Re: E-RM Polygogo

Post by freemod »

mdoudoroff wrote: Thu Dec 03, 2020 12:14 pm
freemod wrote: Sat Nov 28, 2020 4:45 am Hello, cannot find a manual for deeper description of this module... It necessarily needs a vca in order to modulate the amplitude by the means of gated envelope, right?
Polygogo doesn’t have a manual. It ostensibly doesn’t need one.

Regarding your question, it’s a modular oscillator, intended to be used with other modules downstream, including VCAs, filters, LPGs, etc.

That said, Loopop nicely documents a “hack” that wrings a VCA out of the FOLD CV:

Thank you very much for this return, I especially aprecciated the "ostensibly" adverb in you words, it evokes a bit the general uselessness of gear's handbooks (according to Eno's way of music creation).
I asked merely because somewhere I had read about a "trigger input" so I suspected (hoped?) that it might be a sort of resonator input, the likes of Rings, Plaits... the ones we use without a vca

Best wishes
Photosinferno
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Re: E-RM Polygogo

Post by Photosinferno »

Hey,
Anybody got together a ‘Cheat sheet’ for the buttons/combinations ?
-or maybe they decided to release a manual- but haven’t told anyone😆
Just got this and am blown away by the sounds it emits - wonderful module, and the build quality is superb I feel.

John
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Re: E-RM Polygogo

Post by gogmagog »

How does it respond to audio-rate CV?
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Devilwidget
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Re: E-RM Polygogo

Post by Devilwidget »

sorry if this has been answered upstream - but can someone explain what the OP ratio button does? One press quantises the ratio of the FM operator, but what does a second press (lightly flashing led) do?
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BlinkyLights
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Re: E-RM Polygogo

Post by BlinkyLights »

Approaching 2yrs since it was announced, is there any consensus one way or another? Is it more than a pretty face / cool looking display? Worth the cost and hp?
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Devilwidget
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Re: E-RM Polygogo

Post by Devilwidget »

BlinkyLights wrote: Wed Feb 17, 2021 2:01 pm Approaching 2yrs since it was announced, is there any consensus one way or another? Is it more than a pretty face / cool looking display? Worth the cost and hp?
Just picked one up after sitting on the fence for the last couple of years. Should have got one sooner. The relationship between visuals and sound is far more that just a pretty screen - it vastly increases the control you have over the character of your waveform. The layout is excellent, and the sheer range of the thing is astounding. Add to that it is my fav FM implementation bar none, and can both be very musical, and horrifically atonal, with a huge degree of control between the two.

The issues with phase between the outputs are only an issue if you are trying to create very straightforward waveforms - in which case you would be better off with a more simple vco anyway. Even then it is pretty much a non-issue as far as I am concerned.

My only 'slight' gripe is that the 'fold' input gets pretty gnarly pretty quickly - but you can use the 'teeth' fader to get subtler folding sounds anyway, so it is not really a problem.
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wickfut
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Re: E-RM Polygogo

Post by wickfut »

I'm looking to get one of these but all the youtube videos I've seen haven't really shown what it can do with harsh sounds, anyone got any demos of it doing extreme wavefolding and sync?
scuttlefish
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Re: E-RM Polygogo

Post by scuttlefish »

Devilwidget wrote: Wed Feb 17, 2021 6:27 am sorry if this has been answered upstream - but can someone explain what the OP ratio button does? One press quantises the ratio of the FM operator, but what does a second press (lightly flashing led) do?
Repeating this question - does anyone know what OP ratio flashing does? Off is non-quantized OP ratios, On is quantized (even?) OP-ratios. Flashing does not appear to be quantized.
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wajobu
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Re: E-RM Polygogo

Post by wajobu »

I cannot technically answer the buttons question, but it’s a fabulous texture machine, and I use it often with setting a main key note in a patch (tonic or dominant). Then I use a few LFOs to modulate from stable to unstable settings, to move within the stereo field. I set the buttons depending on the texture that I am seeking. The Regular button, for example, opens and closes the wave shapes to make the sound smoother or grittier. It’s a very intuitive module.
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wajobu
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Re: E-RM Polygogo

Post by wajobu »

I have no idea why my post has strike-thru in the text, and I cannot get rid of it. Sorry.
On a reach and planing
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mdoudoroff
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Re: E-RM Polygogo

Post by mdoudoroff »

scuttlefish wrote: Sun May 09, 2021 2:59 pm Repeating this question - does anyone know what OP ratio flashing does? Off is non-quantized OP ratios, On is quantized (even?) OP-ratios. Flashing does not appear to be quantized.
Flashing does appear to be quantized to me, but in finer increments—perhaps semitones?
PiLLoPLeX
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Re: E-RM Polygogo

Post by PiLLoPLeX »

just arrived mine now, it's AWESOME!! but i can't find a manual, i know is simple but a manual will be useful...
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100000bps
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Re: E-RM Polygogo

Post by 100000bps »

what voltage ranges is it ? 0-10, +-5 ?
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oldenjon
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Re: E-RM Polygogo

Post by oldenjon »

100000bps wrote: Thu Aug 12, 2021 8:57 am what voltage ranges is it ? 0-10, +-5 ?
The outputs? Standard -5/+5V.
PiLLoPLeX wrote: Tue May 25, 2021 12:48 pm just arrived mine now, it's AWESOME!! but i can't find a manual, i know is simple but a manual will be useful...
Yes, a manual would be good. It wouldn't have to be long, just something to explain the basic concept and button operations. I know a frequency lock feature was added but I don't remember how to access it. All that information is spread across different YouTube videos for now.
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mdoudoroff
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Re: E-RM Polygogo

Post by mdoudoroff »

More “missing manual” info:

As far as I can tell, all the inputs are -5/+5v except 1v/o and EXP IN.

I’m not really sure what the exact voltage ranges for 1v/o and EXP IN are, but the accept pretty high incoming voltage and also accepts negative voltage.
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urogijani
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Re: E-RM Polygogo

Post by urogijani »

Not a manual, but finally something :) From the new SOS mag.

E-RM Polygogo
Eurorack Module

''Interesting and unique synthesis techniques seem to be plentiful of late, and the E-RM Polygogo is no exception. It’s also one of a growing number of modules that are stereo, plus it may just be the best looking module I’ve ever seen.
The Polygogo uses a digital synthesis method invented by E-RM called Polygonal Synthesis. This works by plotting the X and Y position of drawn polygons. If, for example, you draw a circle, and you plot the amplitude of one axis over time, you get a sine wave. The speed of the drawing dictates the frequency and by changing the shape and rotation, a huge variety of stereo waveforms can be generated.
A beautiful OLED yellow-on-black screen shows you the drawing plot and updates in real time as
you change parameters. The graphics are the exact polygonal plot that is output from the X and Y (left and right) outputs. It’s hard to convey in words just how nice this screen looks, and the polygon plotting is rather mesmeric.
Most of the slider controls are focussed on manipulating the polygon shapes and every parameter can be CV controlled. The knobs above each slider change from fine-tuning controls to bipolar CV attenuators when a cable is plugged into the CV input. Order sets the number of corners the polygon will have, from two (a straight line) to 28 (a near perfect circle). You can switch ‘regular’ mode off to allow for a non-integer number of corners, which will create extra harmonics when the plotting scans a ‘broken’ edge. With the Cycle button, you can also toggle whether the polygon is always drawn from the same spot, or whether it begins drawing from the last position. This has the effect of ‘spinning’ the polygon and creating additional stereo movement.
Teeth will take the sides of the polygon and tilt them inwards creating disruptions and overtones in the waveforms. Roll rotates the polygon which causes the waveforms and relative phase relationship between the X and Y outputs to constantly shift, creating spacial movement. The final two sliders change the ratio
and FM amount of an internal operator (there is an
of the internal operator can be smooth, or quantised depending on the status of the ‘OP ratio’ button. Frequency modulation is represented nicely on the display.
Fold will push the waveform out of the edges of the screen and into the opposite side, adding harmonics at low levels and extreme crushing and distortion effects at higher levels.
The Polygogo is not difficult
to master. You quickly become accustomed to connecting the visual to the audible. Smooth circular shapes make sine
waves. Jagged shapes add more harmonics. Spinning shapes will have more stereo movement. And if the screen looks chaotic, the sound will be too.
As well as the wide range
of stereo synth-tones that the Polygogo can generate, I found
a much pleasurable distraction using it as a modulation source. The X-Y outputs make an excellent modulation pair. Sort of like
having your own automated joystick controller continually drawing complex repetitive patterns. Although I don’t have the hardware to test it out, I imagine the Polygogo would make an excellent controller for lasers or oscilloscope art.
I’m not sure the Polygogo really generates anything that a flexible oscillator can’t already. The stereo aspect is definitely a big part,
but the raw tones sound much like sawtooths and sine-waves being sync’ed, FM’d, bit-crushed, wave-folded, etc. It does however offer a very unique approach to making these sounds and taking a different path to a familiar destination can offer as much joy as going somewhere new. In the end, the Polygogo is well built, innovative and fun to use and I can’t think of much higher praise than that. Rory Dow''
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Re: E-RM Polygogo

Post by Stice »

Got to play with a Polygogo today. There’s an inherently clean sound to it, even when it’s making noisy sounds. Which sounds contradictory, but there’s a shiny, clean sound to it. I think it sounds amazing, but if you’re after IME grit I’d look elsewhere.

The sliders feel great.

Definitely debating opening up the space for it.

Didn’t get to try much audio rate modulation, curious about that from owners.
Turn on. Plug in. Slew down.
freemod
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Re: E-RM Polygogo

Post by freemod »

this is not stereo panorama
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mdoudoroff
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Re: E-RM Polygogo

Post by mdoudoroff »

freemod wrote: Tue Oct 19, 2021 6:45 am this is not stereo panorama
No, it’s a pseudo-stereo oscillator, which basically means you get distinct—but related—harmonics from two separate outputs. Certain situations result in imbalance, so the sound can vary in amplitude and harmonic complexity from one to the other. All the discussion of “stereo” depends on how far you’re willing to stretch the definition.
freemod
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Re: E-RM Polygogo

Post by freemod »

I wouldn't suggest anybody to stretch definitions and I generally don't use to do it. Definitions are just created to obtain narrow meanings from words, since words by themselves always show (too) wide semantic fields. The more you get a “scientific” perspective, the narrower becomes the semantic field of the adopted word to mean something more precisely. Concerning the stereo field, everyone can look for the definition of stereophony (please help yourself) and verify that the Polygogo doesn't offer tree-dimensional immersive perception from its outputs. Please do not forget that we're talking about perception. The fact that Polygogo does not feature stereo outputs has been deeply discussed and aknowledged in this thread, long ago. Someone also stated that it was a marketing hook, since innocent buyers are seduced by stereo outputs, whereas stereo image is created in the final mixer together with other sound sources and mono tracks are much more easy to process (the more the tracks, the better to have mono sources). I wouldn't encourage the use of certain expressions the likes of “pseudo-this” or “fake-that”. It is a way of speaking that leads to nowhere in the process of mutual understanding. Have a nice evening...
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Mr. Aloud
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Re: E-RM Polygogo

Post by Mr. Aloud »

Good looking, interesting concept, fresh design - I´m tempted. But how often do you end up seeing a nice graphic and start to think it sounds nice, too? Is the eye candy distracting from critical ears? Or are the graphics more of an informative nature, such as pot oder fader position?
It would seem that still, after all these years, perception is essentially thought to be a passive process.
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Re: E-RM Polygogo

Post by lyesmel »

Picked up one of these last week. Have mixed feeling about it so far.

Off the bat, I find it pretty irrating that with a $600 price tag they can't even provide a simple one sheet pdf manual.

Something about the straight sounds is lacking character and are overly digital in a way that makes me think a bit of Plaits.
As a result I don't find myself wanting to use it for melodic stuff.

The stereo stuff is not ideal, and working with it in mono does not nearly as good as working with it in stereo.

On the flip side, the module becomes pretty incredible when you throw some modulation at it.
It can yield some crazy sound design, and create enough sounds to fill a video game.

Ultimately not sure if I'll hold onto it. At $600 and 32HP I feel like I need to love everything it has to offer, and not just a small portion of it.
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Re: E-RM Polygogo

Post by dangayle »

I just picked this up last night. I see it in the same vein of ultra-modulatable, all-sweetspots sort of module like the BIA or the Manis Iteritas. I imagine a lot of the same complementary modules will work with it like the Voltage Block and Mimetic Digitalis, for a lot of the same reasons.

I also noticed in Hainbach's video, he pairs it with the Optomix, which helps tame some of the digital high end. I'm definitely going to try this.

For a filter, I plan on pairing it with the Qu-bit Prism, which I absolutely love.
dangayle
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Re: E-RM Polygogo

Post by dangayle »

Update on my last post, this thing is amazing. The base, unmodulated sounds are good, but if you start hitting the various inputs with triggered envelopes or other sequenced CV sources it really comes alive. Everything I said in the above post is true.
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Re: E-RM Polygogo

Post by chriscarter »

I just got a Polygogo this week… wow I wish I’d known about it sooner, its a beast of an oscillator.
Agree with everything in the above post, it produces some astounding timbres.
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