Music of the wind: a modular Aeolian harp

video upload by Electrum Modular

"Combine a modular synth with a wind gauge and you get what we might call an electro-aerophone: an electronic instrument that can transform the wind into music … and, in the process, reconnect us to our environment.

On this second trip to the park, I simulate an Aeolian harp with the help of an eight-band, resonating filter bank, a comparator, and an addressable sequential switch.

Previous episode (modular wind chime): • chiming with the breeze: wind as control v... [posted here]

My new album: https://smallchanges1.bandcamp.com/al...

Readings quoted:
Timothy Morton, “Of Matter and Meter: Environmental Form in Coleridge’s ‘Effusion 35’ and ‘The Eolian Harp,’” Literature Compass 5, no. 2 (2008): 310-335
Douglas Kahn, Earth Sound Earth Signal: Energies and Earth Magnitude in the Arts (University of California Press, 2013)
R. Selfridge, D. Moffat, E. J. Avital and J. D. Reiss, “Creating Real-Time Aeroacoustic Sound Effects Using Physically Informed Models,” J. Audio Eng. Soc. 66, no. 7/8 (2018): 594-607

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Heretic Machines presents: Kick! :teaser

video upload by e j

Heretic-Machines KICK!

video uploads by e j

"heretic machines presents: KICK!
soon available via heretic-machines.com

more
info
soon"

Stereo Lockhart Wavefolder + drum machine // Heretic Machines aka optotronics

video upload by e j

via Heretic Machines aka optotronics

"This is a stereo wavefolder, 10 hp. It can be quite distorted and brutal !
​
It's loosely based on nonlinear circuits wf core (Lockhart cells)
​
This stereo wavefolder allows you to achieve interesting stereo - folding effects even with very basic modulation.
​
Output 1 is normalised to the input 2- this allows you to use it as a single ten-fold wavefolder!

When channels are used separately the module functions as dual 5-fold wavefolders.
CVs (fold and offset) from the left channel are normalised to the right channel - so you can use single source modulation for both wavefolders.
It can sound quite brutal and distorted-10 folds is not nothing!

Perfect for mad panning, distortion effects and FM madness!

teeeeeennnnnnnnnnnn fooooooooollllllldddd"

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Heretic Machines represents: Stereo Wavefolder

video upload by e j

Wavefolder + oscilloscope : short demo


"This is a stereo wavefolder.

- 10 hp

-the CV inputs are normalised from left to right allowing you to obtain complex stereo patches with just few modulation sources

-output 1 normalised to input 2, this allows you to use it as a single ten-fold wavefolder!

teeeeeennnnnnnnnnnn fooooooooollllllldddd
more info here: https://www.heretic-machines.com/"

dual octaver

video upload by e j

via Optotronics

"The octaver is a great addition to the dual CEM VCO module (the square wave output should be routed to the pulse input).

It's based on the original Thomas Henry's VCO Maximus. It is a perfect tool for generating additional musical fifth or suboctave tones. Moreover octaver 2 input is connected to the output of the octaver 1 for additional divisions! Of course you can use them separately as well. The great thing is that this module allows you to create very interesting soundwaves and rhytms...

According to Thomas Henry : 'The pulse signal is routed to an XOR/flip-flop arrangement which generates an additional musical fifth or suboctave tone added in. You can think of this in terms of harmonics, or if you wish, as a definite harmony playing in tandem, e.g., a C note with a G note mixed in.

The pulse output from the CEM3340 is sent to Schmitt trigger to sharpen up the signal a bit. The firmed up pulse then goes to switch 'interval' which lets you choose between the addition of a fifth or an octave derived pitch. If numbers are your bag, then think of these as divide-by-1.5 and divide-by-2, respectively. On the far end, switch 'octave select' can further halve things to divide-by-3 and divide-by-6, i.e., a fifth and an octave one octave lower yet.

Polarity switch lets you add or subtract the subdivided signal from the original pulse, effectively doubling the number of waveforms possible. The output of the flip-flops is sent to one side of the blend pot, while the other side t is fed by an isolated version of the original pulse.'"

Optotronics - mini eurorack AV system

video upload by e j

"modules include:
-power module
-S&H/T&H
-PT2399 Delay
-VCA/VCLFO
- AV VGA module (3 VCOs)

runs on 15V 2A power supply which is not included.

more info here (including detailed PDFs with schematics+ description) : https://www.etsy.com/uk/listing/15352..."

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TRI-VGA SYNTH

video upload by e j

"Triangle VGA sequencer is an unorthodox audio-video synthesiser. It consists of arduino for generating VGA signal, bunch of CMOS chips like: shift registers, frequency dividers, bilateral switches and phase locked loops. It’s noisy, unpredictable and very glitchy! It also contains envelope follower, so you can plug in an external input. There are no rules in playing the triangle – the surface is magnetic, which allows you to combine variety of patterns via placing the magnets, create feedbacks between each colour/oscillator and unstable sequences. It contains two outputs – red and green, while blue controls the overall pitch of the sequencer. It has on / of toggle switches for each colour/oscillator as well as for their frequency range and three sliders for their frequency and controls for vertical and horizontal sync and clock oscillator. It has VGA output and runs on USB mini. What you see is what you hear ! It’s brute, it’s rude. it’s contingent and crude!"

Delayed Twin Oscillator

video upload by e j

"stand-alone stereo voltage controlled delay effect;
dual voltage-controlled oscillator;
dual voltage controlled amplifier

more info and purchase here: www.etsy.com/uk/shop/Optotronics manual: https://drive.google.com/file/d/1MmPi...

DTO stands for incestual, congenital desire between two twins. the seduction of doppelganger's [false] self; the dangers of incenstual love between conjoined twins, their parasitic yet intimate codependent and endlessly loyal existence. always generating feedback, always mirroring, always present. The Other is me, I am the Other.

'So we declare ourselves to be twins,' he agreed. 'Symmetrical creatures of a whim of nature, henceforth we shall be the same age, the same height, with the same hair, walking the highways and byways of the world in identical striped clothes with the same bow tied under our chins. But I warn you that people will turn around and look after us, half touched and half scornful, as always happens when something reminds them of the mysteries of their own beginnings.'
The Man Without Qualities;Robert Musil

check out my 'website' : ewajustka.tumblr.com
social: instagram.com/ewajustka_official"

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Optotronics Mini-Eurorack System

video upload by e j

"modules include:
1) CEM3340 dual VCO
2) Rungler
3) wavefolder
4) OTA VCA
5)basic dual LFO

more info (detailed docu on each module)
&
purchase here: https://www.etsy.com/uk/shop/Optotronics"

808-Aid by Max for Cats

video upload by max forcats

"free 808 programmer by Max for Cats crafts Software Instruments, Effects, MIDI devices, Sound Design and Samples for Ableton Live.
https://maxforlive.com/library/device..."

"A 808 programmer for Ableton's 808 kits. Originally released as a max patch for 808-day by C74's ej."

Roland Jp8080 vs ILDA

video uploads by e j

"supersawing laser"

DIY Optotronics modular system

video upload by e j

"built for the 6 weeks long course, which took place at Iklectik, London between 11/21-03/22. The system consists of: VCOs, LFOs, VCAs, VCF, AD, power supply, wavefolder, delay, S&H, rungler. we have also built our own cases and racks. more info here: https://diy-optotronics-modular-cours...

Some of the modules will be for sale at some point in life!"

Ewa Justka Optotronics DIY Euorack System

video upload by e j

"some example of patches.
(listen on headphones)"

Ewa Justka Optotronics Royal Flanger (Delux)

video upload by e j

"I present to you REAL ANALOGUE stereo flanger based on two BBDs.
(also available in mono).

Stereo (delux) version contains:
-two LFOS for clocking BBD (Flanger pitch modulation)
-two separate CV input (deactivate LFOs) for external pitch control (eurorack compatible)
- CV amount knobs (which also control the pitch)
LFOs:
-'manual 'knobs - range of the flanger
-'rate' of the lfo
- sweep - depth

-FDBK knobs (feedback amount) - capable of extreme feedback!! (maximum self oscillation)

- two mono jacks in and out (for stereo version) - 6.35 mm
- two CV jacks - 3.5 mm

available in variety of vintage royal tins, on my etsy store: https://www.etsy.com/uk/shop/Optotronics

Runs on 9VDC+ (not included)."

test10

video upload by e j

"testing, testing"

Update: Optotronics Synth DIY Eurorack System:



Update2:

"These are raw recordings of my new eurorack system. The boards' layout and panels were designed by me. All of the modules were based on quite standard designs: diode ladder VCFs, CEM VCOs, OTA VCAs, basic LFOs, discrete envelopes and single PT2 delay.

CV was generated by Korg SQ1 and Instruo's Harmonaig.

I kept modules quite simple, as the system was made specifically for future workshops and DIY kits (soon available via etsy shop)

The system will be keep growing in new modules!

credits

released August 28, 2021"

more

ewa justka VOICE ODDER 2

e j

"WHAT IS IT?

- a synth based on PT2399 delay IC and 40106 2 light sensitive square wave oscillators
- two inputs: mic and oscillators, you can choose which input goes through the delay unit (PT2399)
- you can purchase either DIY kit (all parts included except for the battery) version with detailed instructions OR finished product.
- runs o 9v

“The word is now a virus. The flu virus may have once been a healthy lung cell. It is now a parasitic organism that invades and damages the central nervous system. Modern man has lost the option of silence. Try halting sub-vocal speech. Try to achieve even ten seconds of inner silence. You will encounter a resisting organism that forces you to talk. That organism is the word.” – William S. Burroughs, The Ticket That Exploded"

https://www.etsy.com/uk/listing/744423665/voice-odder-2

This one is in via brian comnes: "new version, with a panelyou can purchase.." via https://ewajustka.tumblr.com...

You can find additional posts featuring Ewa Justka's work here.

Ewa Justka - HELLO? STELLA? ARTOIS...? ARTAUD?

e j

Editions Mego @ 2020
album: Upside-down Smile

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See the Ewa Justka label below for more.

Ewa Justka's Ladder to Hell

Ladder to Hell DEMO Published on Dec 27, 2019 e j

This one in via brian comnes.

"Laddder to Hell is a celebration of resonance !!
based on Moog resonance filter - TRANSISTOR LADDER -
- OCD distortion (modified) http://3.bp.blogspot.com/-57B7rhhMBg8... [and below]

and ORIGINAL WASP filter : http://www.modular.fonik.de/pix/F_was... [and below]
(high and low pass)

AND Moog Lm 13700 filter http://musicfromouterspace.com/analog... [and below]
(also high and low pass)

audio input
CV for Moog resonance
and Wasp resonance

// i the demo i'm using TR09; TB03, vermona kickdrum and korg sequencer sq1//

you can purchase it here: https://www.etsy.com/uk/listing/76545..."

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Ewa Justka live @ Cafe Oto, London, 09/09/15

Published on Sep 22, 2015 e j

hand made drum machine, sequencer, voice odder
modified crt
cfl bulb

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Ewa Justka of Optotronics.