Eurorack polyphony in 52 HP (single filter)

Published on May 24, 2020 joeSeggiola

"My personal take on polyphony in Eurorack. Recorded in spring 2020.
DIY MIDI to 4x CV/gate interface: https://github.com/joeSeggiola/arduin...
MI Stages custom firmware: https://github.com/joeSeggiola/eurora...

Patch notes, from left to right:

- A DIY MIDI interface (link above) allocates notes polyphonically from the keyboard into four channels of CV/gate. The additional top-most gate output is a combined OR.
- CVs are sent to Chord v2 in Unison Poly Mode: each oscillator is controlled independently by its own 1V/oct input.
- Gates are sent to Stages, which runs a custom firmware (link above) that generates five identical envelopes.
- Veils uses four of these envelopes to drive one VCA for each of the four voices coming from Chord's individual outputs.
- WMD SSF Pole-Zero filters the final mix from Veils; its cutoff is modulated using the fifth envelope from Stages, the one triggered by the OR-gate signal.

[ 0:00 ] Overview, simple melody
[ 1:13 ] Filtered chords
[ 2:04 ] Overlapping arpeggios
[ 3:44 ] Wavetables exploration

I'm not claiming this is the way to get polyphony in Eurorack, I'm just sharing the result of my latest DIY and coding projects."

Monome Norns Shield {diy Norns}

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"Works well, has code base installed.

Pi 3b+
16GB card
Dark green case
Light green clear top
Charger"

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Haible Living VCOs eurorack triple oscillator module (random source version)

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You can find some previous posts featuring JH Living VCOs here, including one with some very unique counter knobs.

Jurgen Haible was well known for his synth DIY designs. He unfortunatelypassed away in December of 2011, and his site is now gone: http://www.jhaible.de. Fortunately you can, however, find backups in the Internet Archive Wayback Machine.

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Herbs and Stones Liquid Foam

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"Hard to find bass line analog synth with 2 sequencers, an amazing filter and banana jacks."

You can find demos in previous posts here.

Oxford Synthesizer Company Oscar

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1978 Roland SH-1 w/ Original Price Tag & Clear Protective Plastic Overlay

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"Imported from Japan. It still has the original price tag, though sadly not the box, and has barely had any playing in its lifetime. There are minor scratches on the surface and the jack nuts have a little rust (photographed) but it is in very good condition for its age and plays really nicely. In fact, it still has the original plastic protective covering on. It does have a Japanese plug and runs on 100 volts but a transformer costs £15/20 and a technician can modify the internal transformer if you have one nearby. Going for around £1500 serviced with a UK plug, this is a chance to grab a bargain."

YAMAHA DX100 w/ Original Box & Manuals

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"Yamaha DX100 with Accessories in Near Mint Condition, working perfectly. Includes DX100, 3 Books Pictured, Yamaha PA-40 AC Adapter and the Original Yamaha Shipping Box. No scratches on face or keys."

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Sequential Circuits Multitrak Vintage Analog Synthesizer

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Ambient Dark Drone With Microfreak

Published on May 24, 2020 Perplex On

"Droning with #microfreak, spiced up with FAC Alteza Reverb. Projectionmapping done with HeavyM featuring pixelsorted video material of a nearby river."

Modifying a Powerglove To Make Music, But Controlling It With A Robot.. Because... Why not?

Published on May 24, 2020 LOOK MUM NO COMPUTER

"It was only a matter of time i did a #retro NES #powerglove hack!
Thanks very much for the support! It means projects like this can keep getting done, the 1000 oscillator mega drone is nearly finished! if you want your name on a knob check out here, also a sample pack from todays video is available there too!

Support :- https://www.patreon.com/lookmumnocomp...

I used a LULZBOT mini to print out all the 3d printing, and it needed no calbiration or filing and the arm slotted together! highly recommended https://www.lulzbot.com/

if anyone has a DOEPFER MOGLI, that they wanna sell! or want to lend please let me know!

Build your own open source robot! InMoov! http://inmoov.fr/

SCHEMATIC FOR THE INTERFACE :- https://www.lookmumnocomputer.com/pro..."