12 days of Modular- #8 Blue Noise

YouTube Uploaded by raulsworldofsynths on Nov 30, 2011

"The 12 days of Modular. A series of 12 videos themed around Modular Synthesis and sound. Demonstration of Blue Noise accompanying waveform view. Sound and Video by Raul Pena"

All parts here.

Vocoder Madness

via robovoice on this electromusic.com thread. EMS Vocoders:

Newcleus - Computer Age (Push The Button)

YouTube via josieldeassis
"Productions, formed in 1977 in Brooklyn, New York, which included teenagers Ben "Cozmo D" Cenac and his cousins Monique and Pete Angevin. The group's popularity grew as it played block parties in Brooklyn. By 1979, the primary group's members were Cozmo D, Yvette "Lady E" Cook (who would later marry Cozmo D), Monique Angevin, and Bob "Chilly B" Crafton (who would later marry Monique)."

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New Bugbrand NSH - Noise, Sample & Hold & Red Phase Shifter Modules

via Bugbrand

"NSH stands for Noise, Sample & Hold – a module which features analogue Noise and a pair of Sample & Hold processors.

The Sample & Hold circuits are identical, each with Input, Output & Clock input (with internal comparator, trigger level c.+1V). The Source Input can be set to either an external signal or takes the White Noise source direct. The S&H can be run at audio rates for ‘bug-crushing’ (analogue sample-rate reduction – NOT bit-crushing).

The Noise section is standard transistor-based White Noise, with a second Filtered output which passes through a simple tilt filter around 1kHz cutoff."

via Bugbrand

"The Phase is a 6 pole, analogue Phase Shifter designed for hands-on sonic thickening. Made up of 12 All-Pass Filter stages, it features fully balanced Input/Outputs, Feedback, and Modulation from an internal LFO and/or external sources. All in a very playable design, stemming very much from the blue Phaser module.

Check the Block Diagram image. The main Input is designed for typical line level signals with variable gain up to 20dB and soft-clipping so you can add some overdrive if desired. The Feedback input stage is similar but without the variable gain – it is normalised from the Phase output & plugging a jack plug in breaks this normalisation. The buffered input signal is split off to the Phasing stages and the dry signal also passes on to the output mixer where it mixes with the Phase stage outputs. The Phase stages is also buffered to provide a pure wet output.

The magic of All-Pass Filter stages, here built around three of the ever versatile 2164 quad-VCA chips, is that they alter the phase of signals at their filtering frequency while preserving their amplitude. (With a pure sine-wave, this would look like the waveform being shifted in phase from the input – but you’ll rarely be putting in a pure sine!). When you mix together the dry & processed paths, frequencies cancel each other out to create peaks & troughs in the frequency response. The main Phase control, combined with any modulation, sets the centre frequency for the filtering and covers the whole audio spectrum.

Dialing in Feedback passes the phase-stage output back around to its input (via a normalised jack connection – allowing experimentation with further external processing) which emphasises the filtering up to the edge of resonance. The Add/Subtract switch inverts the phase output & the feedback input to give two different response modes and there is also an internal jumper that allows some subtle behavioural differences by putting the feedback into either the first or second filter stage (set as standard to 2nd stage, down position, but… experiment!).

Static filtering (ie. without modulation) can be used to highlight particular frequencies, but bringing in modulation is perhaps the more readily audible approach – give it some movement! The internal sine-wave Low Frequency Oscillator (LFO) covers traditional sweep modulation (range approx 0.08-10Hz), but more interesting usage can be found with external sources such as sequencers etc. Note that when switched on initially, if the LFO Rate is set low then the oscillations will take some time to build up to full strength, so you may want to turn the control up full until the LED indicator is clearly blinking. The LFO also has a banana output jack (+/-5V). The External Modulation input takes a CV input (typically 10V peak-to-peak) and has a convenient polarity/mute switch. See the Understanding signals & voltages and Interfacing with Bananas pages for further technical details."

Vintage Analog Synthesizer MAPLIN 3800

Note: Auction links are affiliate links for which the site may be compensated.

via this auction

"It is a true analog monophonic synthesizer. The roots of the english MAPLIN models base on the ETI DIY Synthesizers from Australia.
This MAPLIN 3800 "Synthesiser" (look at the photos) was manufactured in England.

It has great sound capabilities because of the internal routing, the two VCOs (syncable), the noise generator, the S&H circuit (three different sources), three modulation sources, the ring modulator, the LFO, the VCF, the reverberation, the equalizer and the unique Transient circuit. The Transient is a kind of envelope that can be used to modulate several other components of the synthesizer. Like the Trapezoid circuit inside the EMS VCS3 and Synthi A synthesizers. The Transient circuit has got seven different pots for setting up and can also retrigger the synthesizer. Also there is a flexible kind of envelope for the VCA (ADDSR).

This offered synthesizer has got some issues: the two VCO input rotary switches for setting up the VCOs (the blue and the green very left ones) can not be turned without tongs! The switches have to be exchanged. The pot for setting up the noise color does not affect the noise color. The LED of the power supply is lose and needs to be fixed. Thats all. Technical everything works fine excepting the noise color pot. But noise is present and can be leveled from 0 to 100 percent. Even the VCO input rotary switches work normal excepting the strong torque they need to be switched. The installed knobs on them can't hold this strong torque and so they turn without any effect.

Sounds great without any noise on the audio path.

At the back you find several connector sockets. As there are: Foot switches for Trigger and for Glide, external audio input (can be routed through the filter and be used to synchronise the Envelope and the Transient to other sound sources) Here for there is at the front panel the section "EXTERNAL I/P". With this the external audio can be setup in sensitivity and trigger level. Also there is a separate output socket for the trigger and the retrigger, and for the audio output. At least there is a multi connector called "COMPUTER". But i don't know anything about it. I think it corresponds to the section "COMPUTER" at the front panel.

Unit works on 220 - 240 Volt. You will probably need an voltage converter to use this synthesizer or you replace the mains transformer inside."

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SPECTRAL AUDIO NEPTUNE 2 SYNTHESIZER SN 50236

Note: Auction links are affiliate links for which the site may be compensated.

via this auction

"With the Neptune Mk2, Spectral Audio is again tickling out the best of the Analog Technique - three temperature stabilized Voltage Controlled Oscillators, the 24dB transistor cascade filter, the huge LFO range, its modulation flexibility, the envelopes and the transistor distorter section are speaking for itself.
Excellent technique in a 2 unit 19" rack case with deep blue front panel.

TECHNICAL DETAILS Neptune II

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Explore SWAM sounds by Audio Modeling: Available in NOISE

Published on Mar 29, 2018 ROLI

"SWAM Flutes now available in the NOISE app: https://roli.com/stories/swam-flutes

When was the last time you heard the clarinet solo from Rhapsody in Blue performed on a keyboard? It's impossible — unless your keyboard is a Seaboard and the clarinet sound is the pitch-perfect, physically modelled instrument built with the SWAM sound engine.

Watch our film to witness a breakthrough in digital sound. It's now possible to play violin, saxophone, flute, cello, horn and other acoustic instrumental sounds on ROLI interfaces without missing any of the expression that defines the life and soul of these instruments.

Today we're celebrating the launch of SWAM Flutes, a collection of eight flute sounds. But we're also celebrating the ever-growing collection of SWAM soundpacks which includes SWAM Strings, SWAM Woodwinds, and SWAM Saxophones. These unbelievably lifelike sounds are purely digital, and they're created by the Italian maestros at Audio Modelling who created the SWAM engine. We've brought these sounds exclusively to the NOISE app, so you can play them on a mobile device or any Seaboard Block or Lightpad Block that's paired with NOISE.

Our film features a performance of George Gershwin's Rhapsody in Blue on SWAM Clarinet and John William's Star Wars: The Force Theme on SWAM Bass Flute — but can you name all the other songs? Try composing a cover song with a SWAM soundpack yourself, and be sure to send them our way!

SWAM Flutes, SWAM Strings, SWAM Woodwinds, SWAM Saxophones, Bass Quartet and Treble Quartet by Audio Modelling are all available in the NOISE Soundpack Store for ($9.99) £9.99 each."

Blue Lantern Lucky 7 - 24db SH01 Low Pass VCF/VCA // Full Walkthrough and Demo

video upload by Robots Are Red

Introducing Lucky 7 by Blue Lantern Modules. This is a 16hp 24db Low Pass filter based on the famous Roland SH01 filter from 1978. Along with the two input filter, this module includes a built in OTA based VCA with two CV inputs, authentic headphone feedback circuit, two subharmonics generators, built in noise, and a good handful of CV inputs.
Just patch a VCO and an Envelope and you are ready to go!

In the video we take a deep dive into each knob and CV input, listen to the filter in various settings, and even look at some feedback self-patching with excellent results.

The Video:

01:06 - Overview
03:00 - Deep Overview
04:15 - Subs
04:34 - Noise
05:03 - VCA
06:24 - Audio In 2
07:30 - Feedback
09:28 - Expo CV Input
11:13 - Rez CV Input
11:53 - FM CV Input
13:07 - Linear CV Input
14:19 - VCA Input 2
15:49 - The Filter
20:05 - Dirty Sine VCO
21:48 - Feedback Patching

via this auction

Model: BLM Lucky 7
Width 16hp
Current: +69mA -68mA
PCB Stack: 1 Level, Skiff compatible.

Module type: analog filter, sub harmonic generator, internal vca, white noise generator, (self) oscillator

What does this do?

This particular product is my take on the vintage analog filter found on the Roland SH1 Keyboard. Some key differences from the original
are low end correction on the resonance path (audio level would drop), with voltage control, and I used a modern exponential converter.

The bass frequency will retain nicely on this modern version. No more audio level drop. The 'RCV' can be used to simulate Band Pass sounding tones when used with audio rate external sources..

I also included the famous feedback patch that lucky users of the vintage keyboard would do. Users would patch from the headphone output back into the filter external input.
I duplicated the original discrete headphone circuity and internally patched it for you. All you have to do is turn it up with the 'FBK' knob. Small settings go a long way with this.
It can get strange with too much feedback, in a good way.

24db Low Pass Filter.

Features:

(2) Possible External Audio inputs.
(1) White Noise Generator, Switch Jack internally patched to AIN2 input jack.
(2) Sub Hamronic Generators taken from the SH101 circuitry. Both are accessible by level knobs.
(1) Voltage Controlled Rez, with auto low end level correction.
(1) 1V per octave 'Expo' input.
(1) Linear FM input. Best used during Filter Self Oscilation duties.
(1) Bi-polar FM Attenuinverter. Best used with an external envelope generator.
(1) Internal VCA with 2 possible CV inputs. VCA knob is a manual offset to 'open' the VCA.

What you get:
Mixer +WhiteNoiseGen +Subharmonics +VCF +VCA

All you need is a vco, and envelope generator to complete a compact analog mono voice.


If this was literally your first and only module, it is possible to make sound and noise for entertainment.

Price $225.00

Victoria Vesna - Cell Ghost, Bio Art Installation 2004/05

YouTube via MediaArtTube

"This work captures the viewer moving through space with a live camera, with their image projected in particles that is stored in memory and appear later as a ghost. The person passing by also activates text. The ambient sounds are a composition of data derived from manipulating live biological cells. The piece was originally conceived site specifically for an exhibition held at the former Seodaemun prison in Seoul, Korea.

eodaemun Prison(Hyongmuso), which is located at 101, Hyonjo-dong, seodaemun-gu, Seoul, was built during the japan's occupation at the end of Taehan Empire, and it served as a major site of oppression during their forced colonization. For almost 80 years, it has stood as a living monument of our ordeal, and grief in the tumultuous times of modem Korean history.

When japanese occupid our nation by force, they unveiled their wild ambition to launch a full scale invasion into the continent by using our land as a bridgehead. At that time, they found it necessary to build a prison to house the numerous patriotic martyrs who fought against their invasion was begun in 1907 near Tongnimmun (Independence Gate), which was estabilshed as a symbol of independence during the period of Taehan Empire.

Poem:
Prisons of our minds unlocked by the power of love.
Ghosts of suffering from the past haunt these spaces now.
Waiting for the key to open the door to the future.
Bars of steal dissolved by the heart.

Cell Sounds
Professor James Gimzewski with PhD student Andrew Pelling at the Pico lab, UCLA first made the discovery that yeast cells oscillate at the nanoscale in 2002. Amplifying this oscillation results in a sound that lies within the human audible range. "Sonocytology", the suggested term for this cutting edge field of study, represents a new realm of challenge and potential for scientists, artists, and in particular for musicians. The tool with which the cell sounds are extracted - the atomic force microscope (AFM) - can be regarded as a new type of musical instrument. Unlike microscopes that use optical imaging, the AFM "touches" a cell with its small tip, comparable to a record needle "feeling" the bumps in a groove on a record. With this interface, the AFM "feels" oscillations taking place at the membrane of a cell. These electrical signals can then be amplified and distributed by speakers. Manipulating the cell with chemicals will result in a change of oscillation. Isopropanol (rubbing alcohol) for example, will change a "singing cell" into a "screaming cell". And a chemical such as sodium azide will kill the cell, causing the emitted frequency to die away, leaving only noise.

More info: http://vv.arts.ucla.edu/projects/04-0..."

Victoria Vesna and James Gimzewski - Blue Morph, Intercative Installation / Nano Art, 2008


"Blue Morph is an interactive installation that uses nanoscale images and sounds derived from the metamorphosis of a caterpillar into a butterfly.

Nanotechnology is changing our perception of life and this is symbolic in the Blue Morpho butterfly with the optics involved -- that beautiful blue color is not pigment at all but patterns and structure which is what nano-photonics is centered on studying. The lamellate structure of their wing scales has been studied as a model in the development of fabrics, dye-free paints, and anti-counterfeit technology such as that used in monetary currency. Blue Morpho has intrigued scientists for generations because of its subtle optical engineering that manipulated photons. Today, its dazzling iridescent wings are giving rise to a market trying to mimic its wonder and create a counterfeit proof currency and credit cards. The optics are no doubt fascinating but the real surprise is in the discovery of the way cellular change takes place in a butterfly. Sounds of metamorphosis are not gradual or even that pleasant as we would imagine it. Rather the cellular transformation happens in sudden surges that are broken up with stillness and silence. Then there are the eight pumps or "hearts" that remain constant throughout the changes, pumping the rhythm in the background. During the transformation to emergence each flattened cell of the wing becomes a nanophotonic structure of black protein and space leading to iridescence.

Nano is not only making the invisible visible but also changing our way of relating to "silence" or making the in-audible audible. With all the noise of chattering technologies and minds, we propose the interactivity to be stillness for in this empty space of nano we can get in touch with the magic of continuous change. But most of all we embrace the absurd and in a surge of laughter recognize our limited human viewpoints.

In collaboration with Gil Kuno, Sarah Cross
Production: Shaun Westbrook, Tyler Adams, Laura Hernandez

More info: http://artsci.ucla.edu/BlueMorph/co ncept.html"

Boredbrain Optx v2 brief introduction (ADAT converter for eurorack)

video upload by Boredbrain Music

"Optx v2 - ADAT Optical Converter
Boredbrain is incredibly excited to finally announce that our next generation ADAT module Optx v2 is complete, and is on its way into production. As of today, you can pre-order the module, and the first batch will begin shipping very soon in mid October.

Next generation ADAT conversion
Optx v2 is a pro-quality ADAT lightpipe converter for eurorack modular synthesizers. The DC-coupled module can encode and decode audio signals with extremely low noise, and CV signals with near-zero offset. Additionally, on-board sample clock allows for one-way ADAT output and the ability to be used standalone to interconnect eurorack systems.

Features:
• Bi-directional ADAT lightpipe encoding/decoding of 8 analog inputs/outputs
• Switchable input mode (in pairs) powered by high-performance Cirrus Logic converters
• AUDIO input mode ensures the highest fidelity possible with ultra-low noise
• Self-calibrating CV input mode provides exceptional accuracy and near-zero offset (DC-coupled)
• Precision DC-coupled outputs support both audio and CV signals
• Internal sample clock permits one-way operation without ADAT input and standalone interconnection of two Optx modules
• Dual LEDs on each output indicate signal strength and polarity"

Update: press release follows:

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New Synton Fenix IV Progress Update via TiNRS

via This is Not Rocket Science:

"Fenix Experiment board no 3

This is a lots-of-DSP board. Most of the things on this Experiment board are a shell for DSP. We have developed a plugin board with sufficient processing power and memory to drive all the things. Currently, we have one of these MCU-boards working and connected to Experiment board no 3.

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Make Noise LxD Resonance Demonstration

Published on Jan 7, 2018

"This is a response to the first half of 'Advanced Patching with LxD' video from Make Noise. [posted here]

Patch Notes:

Intelijel Dixie II+ Oscillator waveform out into Maths channel #2 set to +10V.

Sum out of Maths into LxD 12db Signal Input.

Output of LxD 12db section into a Buffered Multiple.

One multiple going to Channel #3 of Maths which applies the amount of inverted feedback ( -0.1V to -5V).

One Multiple going to Manhatten Analog DTM Mixer.

Mixer output goes to Mordax Data's Oscilliscope (Green Trace).

Mordax output to Make Noise Optomix as a final out.

Korg SQ-1 pitch CV is feeding 1V/O of the Dixie II+ Oscillator.

SQ-1 is also sending Gate CV to Make Noise 0-Coast's Contour Section (Gate Input).

Contour's output is input to LxD's 12db section's CV in (Vactrol Gate).

Contour output is split and fed into Mordax Data's Scope (Blue Trace).

Second Gate output from SQ-1 shows Gate and Gate Length in Mordax Data's scope (Red Trace).

Contour's Sustain level knob is controlling the LxD's Vactrol Gate frequency response acting as a "filter cutoff"... (not sure if that is technically correct...It's cool though..)

Playing with the Gate Length on the SQ-1 is really fun here. Especially when the gate length is at a maximum level (Gate High) and you sweep the Sustain level knob on the Contour section.

Increasing the Inverted signal of Maths Channel #3 will introduce some extreme resonance. Dialing in the amount of inverted signal can show a great range of sonic character. Thank You Make Noise Music!!"

X1L3 - circuit bent - synth mod - yamaha DD-7 drum machine with midi

Note: Auction links are affiliate links for which the site may be compensated.

via this auction

video here and here.

"The big sister of the yamaha DD-6 with a more varied and larger sound set.
Lots of good percussive sounds and a variation of synth and voice samples.
It's also one of the finest in the DD range for glitch generation and ease of
which the glitching can be shaped and moulded into unique fx, incidentals and noise.

Modifications and embedded circuitry:

Analogue resonant filter with high pass and low pass bands
Gain, resonance, low pass/high pass toggle and cutoff
A nice warm filter based on the synthacon.
Lot's of resonance and a unique character of it's own.
Violent, squelchy and crunchy when overdriven in this machine.

Digital 'death industrial' delay
Rate, noise, feedback, off/on toggle
This delay variant is based on the formula applied and the output of circuit bent delay pedals which have been sold in the past.
A versatile and if desired aggressive set up that can drift between ambience, echo and all out harsh noise wall and power electronics.

Analogue distortion
Dual mode distortion with diode clipping, filter and gain.

PSU - DC hum suppression circuitry
A regulated psu is now built into the machine.
This gives a stable and quiet power supply to both the drum machine and additional circuitry as well as
providing a quiet output and excellent noise floor.
Input voltage is +12V tip positive running 2 amps.
Please be aware of the amp rating of your adapter. It MUST run 2 amps or above.
Suitable adapters are available at low cost on ebay.
if Shipped within the UK i'll include a suitable adapter.

Midi retrofit & Gate output
The drum machine now has midi capability by means of an embedded microcontroller.
The four drum channels can be triggered via a sequencer or daw.
Trigger notes are: C3, C#3, D3, D#3 and F3 for the gate output.

Midi is set to CH16 but if you'd prefer a different channel for convenience i can flash the firmware before shipping for you
and assign it to what ever channel is best for you.
The gate outputs at +5v and can be used to trigger other devices such as adsr's and also drive eurorack sequencers.
One of the videos below demonstrates the gate output driving a sequential circuits pro one sequencer.
The gate isn't locked to a time signature so if driving a sequencer you can advance it however you want.

Master pitch control
Gives a large global pitch range - demonstrated in the demo videos
The pitch has a high and low setting and a coarse and fine control.
The fine control gives you conventional pitching of the drums, the coarse will take them down to vicious noise, droning and glitching.
The drum machine now serves not only as a percussive instrument but a generator of abstract sounds and textures.

4x4 glitch matrix
The glitch matrix disrupts the percussive sounds and warps them into various forms of data crash and glitch.
A very interesting modification on it's own. It takes on a whole new level when the fx chain is applied.

Cnc machined aluminium panel work with blue anodize and engraved text and graphics

The DD range of drum machines are some of the best for glitched circuit bent sounds. They achieve a bizzare edge
without becoming too unruly and hard to control. With midi now added you can create nicely spaced patterns which accomodate the glitch matrix and fx chain nicely. It's no longer restricted to it's preset patterns. The pads can still be used with drum sticks and the preset patterns are still intact. It will still run as intended if you choose to use it this way."

The Noisy BSTRD & Lerango

Note: Auction links are affiliate links for which the site may be compensated.
Published on Feb 5, 2017 Tara Pattenden

"Make mega harsh noise with this NOISY BSTRD. Three oscillators clash and combine with a fauxcoder for extra
noise."

via Reverb

"The Noisy Bstrd was created by phantom chips in collaboration with dutch noise artist Kutwyv.

The Noisy Bstrd screams and spits a rainbow of harsh noise.

Featuring three frequency mixed oscillators and a fauxcoder for an extra noise layer.

The second run is currently in production. There are differing colour options of red, green or royal blue.

Features
2 x knob controlled oscillators
1 x controlled fauxcoder
1 x light controlled oscillator
Switch between 2 or 3 oscillators
1 x Volume control
1/4" jack socket
Plastic housing

runs on 9v power, centre negative (common guitar pedal power). Power supply not included. Custom requests can often be accommodated."



Lerango Drone demo Published on Feb 9, 2017 Tara Pattenden

via Reverb

"A machine for creating drones and atonal rhythms featuring 3 Oscillators.

Pitch control for each oscillator

Volume control for each oscillator

6.5" jack output

9v power supply output (not included)"

LA Circuits, Inc. Buchla Styled Eurorack Systems

Playlist:
1. Attaché Demo ft. Echoes + Sunless City

Brendan demoing the Attaché Eurorack System featuring modules: Echoes BBD Delay and Sunless City Transistor Ladder Filter.
Attaché is a complete eurorack system with a built in power supply and 88 HP rails mounted in a handheld hardshell briefcase-- modeled after vintage Samsonite briefcases of the 1970's.

2. LA Circuits EM-404 Hallogallo Audio Fx Demo

Audio visualizer of the EM-404 Hallogallo VCF/Envelope Follower eurorack module. Available for purchase this November 2020, order now: www.circuits.la/shop.

3. EM-601 Technicolor Reverb Audio Fx Demo

Audio demo of Model EM-601 | Technicolor Dynamic Reverb eurorack module. Visuals of the Orion Nebula provided by Nasa Hubble Space Telescope.

4. LA Circuits Atomic Meddle & Clocks

Atomic Meddle Stereo VCF Processing Station and Clocks Sequencer | Summer 2020

5. Attaché Briefcase System Demo

Compact synthesizer in a vintage style briefcase. Coming this Winter 2020.

6. LA Circuits Modular Teaser
7. LA Circuits Lab System Teaser

Current modules via https://www.circuits.la:

EM-801 | MACHINIS$T

$300.00

EM-802 Machinist Sample Track + Hold & Noise consists of 3 individual circuits: a highly stable voltage-controlled sample / track & hold, a noise generator, and a voltage-controlled clock generator. The sample / track & hold section can be manually engaged using the Manual Trigger push button.

The noise generator provides five independent colors of noise. The spectrum specifically consists of Violet, Blue, White, Pink and Red noise. The clock generator’s frequency rate is visualized using the onboard LED indicator, and the sample / track + hold polarity is displayed with corresponding LED indicators.

The onboard slew limiter provides further sound sculpting functionality, wherein the user may select the slew limiter circuit direction and control the slew rate via CV input.

Specifications:

Model: EM-802

Product SKU: 800-0802

Dimensions: 12 HP (3U)

Panel: 2.00 mm Anodized Aluminum

Power: +/- 12V | 8 mA

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Noise Reap FLUX (random source) Eurorack Module

Note: Auction links are affiliate links for which the site may be compensated.

via this auction

"Flux is a glitchy/jerky low frequency* random CV source created with extreme low pass filtered analog white noise.

Two bipolar LEDs give some insight into what the module is doing at any given time. The bottom LED will turn blue when the CV is positive and red when negative. The top LED will match that color code but only comes on when the CV amplitude is 2 volts or greater.

The offset control is very sensitive and will give the random CV a positive or negative bias. It is possible to over offset the CV and have a tweaky +/- DC source.

There is a 1-3 minute "warm up" period before the circuit stabilizes and reaches equilibrium. Until then the random output will have a negative bias and white noise will not be heard and/or centered around ground.

*true random stuff doesn't actually have a frequency because it doesn't repeat

Specifications:

Eurorack 4hp
10mA @ +12V
10mA @ -12V
skiff friendly :)
Outputs:

Raw - amplified white noise output - usually normalized around +/-8 volts (may have a slight positive DC bias, not usually an issue at all for audio sorces, especially noise)
Ran (RANDOM) - subaudio control voltage out +/- 8ish

soundcloud demo"

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Datach'i - Monarchs

Datach'i - Monarchs from Joseph Fraioli on Vimeo.

"no computers or external hardware were used in this performance :)

FREE download of this track here if you want it:
http://bit.ly/Datachi_Monarchs

www.datachi.com

patch basics:
sequencers used are the tiptop audio circadian rhythms (CR), z8000, modcan touch sequencer (TS), intellijel metropolis and 2x make noise pressure points with brains.

CHORDS: make noise tELEHARMONIC sequenced by the CR and two pressure points. processed through the tiptop audio ZDSP reverb.

LEAD MELODY: intellijel atlantis sequenced by the intellijel metropolis and processed through the qu-bit electronic RT60 reverb.

KICK: blue lantern asteroid BDv4 sequenced by the CR.

SNARE: noise engineering BI triggered by the CR and processed through the make noise erbe verb and synthesis technology e580 delay.

HAT: SSF quantum rainbow MKII purple noise with maths expo envelope sequenced by the CR.

SUB KICK: tiptop audio BD808 triggered by the CR.

MID SECTION PERCUSSION: mutable instruments elements sequenced by the CR and Z8000.

MID SECTION TO END HARMONY: modcan triple osc through the modcan multimode filter sequenced by the modcan TS and processed through mutable instruments clouds.

my brother says:
'Sounds like some kind of scale in the key of F minor. the chords are Bo dominant 7th first inversion followed by Dd major first inversion, Ab major then another Ab major an octave higher.'"

noise microphone dr moonstien

Note: Auction links are affiliate links for which the site may be compensated. Published on Jan 8, 2013 drmoonstien·269 videos

"HAND BUILT NOISE MACHINE for sale on ebay"

via this auction

"THis is a hand built noise machine built by [drmoonstien]. it is a push to talk mic with very cool arcade style big red button. you can mix your very overdrive mic preamp with 3 extremely nasty octave modulators. this is the ultimate noise crust mic kind of a death metal version of a vocoder can be used as a feedback machine. this is good noise machine for the person that is more into destructive tambor than clarity. great way to juice up those vocals or control feedback to do your evil bidding. runs on 9v battery has 1/4 inch audio out has regular volume knob and 3 volume knobs for the different octaves of crust. on off power toggle blue led.."

Spectral Audio Neptune 2

Note: Auction links are affiliate links for which the site may be compensated. via this auction

"TECHNICAL DETAILS Neptune II

Feature:
3 VCO with Range 0.14Hz .. 7kHz, used up to 5.3kHz
Sawtooth and Pulse Wave on OSC1 and OSC2
Sawtooth, Triangle, Pulse, Random on OSC3/LFO
OSC3 switchable as LFO
Noise Generator with Spectrum DC..100kHz
Octave Switch for OSC2 with range 32' .. 4'
Octave Switch for OSC3 with range 64' .. 8'
Slide
Sync of OSC2 to OSC1
External Signal source
True Ringmodulator
Mixer section
24dB Cascade filter with Lowpass and Highpass
Self resonant
Keyfollow switch 0-50%-100%
Four Modulation targets of OSC3/LFO: Mixer, Cutoff, OSC1, OSC2
Six shapes of OSC3/LFO: Sawtooth, Triangle, Pulse, Random, Noise and OSC2 signal
Free run switch to have OSC3 free of the keyboard
Filter and Volume envelopes where Filter envelope can be positive or negative modulated
Distortion section with regular Distorter and Fuzzer
Volume
Power switch
Power on led

MIDI:
Learn switch for MIDI Channel and Reference note
Gate LED
Slide switchable over Controller
LFO MIDI Clock Sync
CV and Gate In/Out
5 Octave Range precise MIDI to CV Converter
interpret Pitch bend and Sustain
Cutoff and Modulation Controller with MSB and LSB
Pitchbend Range over Controller
MIDI Timing Clock 1/1 note up to 1/32 note
MIDI Thru with signal regeneration

Performance:
Quality smooth potentiometer
Soft touch knobs
High efficiency 5mm leds, three green/one blue
2.2mm travel push switches for optimal optical feedback
Anodized colored 3mm Front Panel
Pure DC Design means no capacitors in the signal flow
Low noise design
True noise generator (not digital noise)"

OP-1 - how do i remove usb noise?

Published on Nov 18, 2019 teenageengineering

"sometimes usb noise can be introduced when a usb cable is connected to the OP-1.

to remove usb noise, press and hold shift and the com key. from here, press T4 to reach option mode. turn the blue encoder to toggle usb charging on or off. after a few seconds, this will remove or significantly lower the usb noise.

you can also use a ground loop isolator. connect the line out from OP-1 to the input of your isolator, and from there, connect to your speakers or headphones. this will effectively remove any ground loop noise, while still allowing usb charging to remain on."

Portabellabz Synthi Card for Buchla 208

Published on Feb 4, 2019 Todd Barton

"The new EMS Synthi (licensed) Card by http://www.portabellabz.be
be sure to checkout these audio files for best sound http://www.portabellabz.be/SYNTHI_Car...
Great to have this onboard.! Wonderful sounds and timbres. I will be making more videos -- hope you enjoy this teaser."

And via Brian Comnes, spotted on Muffs:

"I'm happy to announce the release of a new Portbellabz card for Music Easel and 208 under EMS Cornwall license.

This card expands the Music Easel or 208 with original EMS Synthi A and VCS3 circuits : an oscillator that produces simultaneous square and triangle waveshapes with wide range and features useful modifications (synchronization, shape CV, hi/lo range) and a noise generator with variable colour, together with my acclaimed Random Voltage Generator modification module that expands many original EMS Synthi A, AKS and VCS3, unlike the 208's one, it's true random.
The inputs and outputs voltages are adapted to match the ones used in the 208.


It will be available in late February / early March, pre-built (€460 + shipping, Rogans and rear edge connector in option) or as a DIY PCB set (€130 shipped) like the 208 ToolBox.

The prices include a commission for Robin Wood at EMS, that is the same for each pre-built unit or PCB set sold.

It works with 208p, 208r (not rev1) and BEMI / Buchla USA Easels. The tracking can be set to 1V/oct, 1.2V/oct or 2V/oct (or other, but who wants that ? :lol: ).

A very few privileged persons were lucky enough to already test a prototype and enjoyed it. Thanks to them for keeping the secret.

Hopefully a demo video of the great Todd Barton should pop up soon, thanks in advance Todd.

In the meantime, here are some (very basic) demo of the card with my own 208.
All sounds are coming from the card except the CO modulation track (208's CO modulated by the card). A 218r was used to demonstrate tracking. It's a bit high in the lowest notes but this is fixed.

http://www.portabellabz.be/SYNTHI_Card_demos_mp3.zip

[b]Oscillator[/b]
- 100% analogue discrete components
- square and triangle outputs, blue bananas are full range outputs for modulation, red knobs are outputs to the mixer
- wide range from very slow LFO to ultrasonic, switchable hi/lo range with fine tuning
- tracking good on about 5 octaves via the 208's keyboard CV in
- variable frequency CV input with attenuverter via black banana
- variable shape CV input with attenuator via black banana
- variable sync input with attenuator via black banana

[b]Noise[/b]
- 100% analogue discrete components
- white banana is full range output for modulation
- red knob is output to the mixer
- variable colour

[b]Mixer[/b]
- tinijax out to feed the 208's preamp
- banana out for mixed modulation

[b]Random voltage generator[/b]
- available on the white banana - a mini slide switch behind the panel selects noise or random, this affects the white banana only, the noise is still available in the mixer when random is used
- clock input via the 208's inverter "to card" socket
- noise colour changes the random voltage

Bill Sequeira kindly did this nice overview. Thank you Bill.
The pictured card is a prototype, the production one will look very similar.

[img]http://www.portabellabz.be/images/PortabellabzSynthiCard.jpeg[/img]

Thanks for your interest and more soon."