Introducing Boundary Layer by Schlappi Engineering

video upload by SCHLAPPI ENGINEERING

"Boundary Layer is a triple cycling slew acting as a powerhouse of modulation, audio mayhem, and obscure modular tricks."

00:00 Intro Montage
00:26 Introduction
00:43 Control Overview
01:50 Stereo Drone Patch
04:54 Three Percussive Envelopes
07:50 Envelope, Portamento, and Modulator
10:45 Outro jams

Check with dealers on the right for availability.

8 Patches with Boundary Layer by Schlappi Engineering

video upload by Stazma

"New Schlappi Engineering module alert!!!!
Welcome the Boudary Layer, a triple cycling slew acting as a powerhouse of modulation, audio mayhem, and obscure modular tricks in the tradition of Serge DUSG, the Make Noise Maths, our own Boundary, and others while also bringing a few new things to the table.

I'll show you some of my favorite patches with it, most can apply to other similar modules so it might interesting to anyone.

Have fun!"

Schlappi Engineering BOUNDARY LAYER / triple function generator / extensive playthrough

video upload by BRiES

"BOUNDARY LAYER by ‪@SCHLAPPIENGINEERING‬ is an apex triple function generator for eurorack. It has all the tricks up its sleeves and (as usual) is just a joy to work with due to it's well thought out interface and versatile feature set.
In this video I tried getting across how damn useful function generators are, how BOUNDARY LAYER works and how much fun it is to make patches with the module.
I hope you enjoy the video."

0:00 intro
0:40 feature overview
41:22 patch examples
1:00:15 closing thoughts



Boundary Layer is a triple cycling slew acting as a powerhouse of modulation, audio
mayhem, and obscure modular tricks. Each of the channels can act individually as:
-a modulation oscillator
-voltage controlled slew (including portamento)
-AR/AD envelope (decay or release determined by choice of input).

All three channels are tied together by three global inputs, as well as three outputs which select the MAX, MID, and MIN of all three voltages. Using different combinations at audio rate allows for patch programmable stereo drone synth capabilities.

Features

3 separate channels
3 global inputs
3 combined outputs MAX/MID/MIN
Oscillates from low LFO rate (a minute?) to audio rate (>10kHz with exponential feedback)
A CV input switchable between RISE/FALL/BOTH
Bound input for simultaneous control over cycling rate and amplitude
TRIG input for AD envelopes
SLEW input for AR envelopes and portamento or filtering
EOC ouput header switchable between EOR and EOF
16 HP
Skiff friendly 32mm depth (including cable)
current draw: +12V 170mA, -12V 100mA

Check with dealers on the right for availability.

Schlappi Engineering Angle Grinder Eurorack Module

Angle Grinder eurorack module demo (the basics) Published on Sep 24, 2018 SCHLAPPI ENGINEERING

"An introduction to the basics of the Schlappi Engineering Angle Grinder eurorack synthesizer module. It is an all analog quadrature VCO and waveshaper module, more details can be found at:
https://schlappiengineering.com/produ... Other companies modules used include: Make Noise Maths, VPME Zeroscope"

via Schlappi Engineering

"Angle Grinder is a quadrature sine wave oscillator, filter, and distortion effect.
The SPIN section is a quadrature sine wave oscillator. The GRIND section compares each phase against the input signal, then subtracts the resulting square waves from the input signal. If the spin section is either damped enough or enough signal is fed into it from the GRIND section then it will stop oscillating and become a state variable filter.

The Angle Grinder tracks volts per octave and can be used as a sine wave oscillator with voltage control over harmonic content available at the GRIND OUT. With no input it’s four phase related sine outputs (0°, 90°, 180°, and 270°) remain clean from 0.1Hz to over 20kHz and are suitable for quad panning or XY applications.

With an input signal applied the GRIND out ranges from quadrature pulse width modulation (at LFO rate) to sync-like metallic tones (at audio rate). When GRIND is fed into the SPIN then it becomes a nonlinear feedback network with the faders and corresponding CV inputs providing instinctive control over phase cancellation, oscillation, and distortion. The four phase related outputs will become low pass, band pass, high pass, and inverted band pass filter outputs.

The function of the Angle Grinder depends on both the position of the knobs and the presence of an input signal.

Quadrature Sine wave VCO with four phase related outputs: 0°, 90°, 180°, 270°
HIGH range from 10Hz to over 20kHz
LOW range from 0.1Hz to over 500Hz
Tracks volts per octave at the V/OCT input
FM1 is selectable linear or exponential FM via jumper on back
FM2 is additional exponential V/OCT jack
With no input GRIND section provides voltage controlled harmonic content
With input GRIND section compares each phase against GRIND IN signal

CLICK FOR MORE »

Schlappi Engineering Introduces BTFLD

BTFLD Overview video upload by SCHLAPPI ENGINEERING

"The BTFLD (pronounced Bit Fold) can be used as a unique wavefolder or a hands on logic module for generating rhythms from LFOs or envelopes."

Hello BTFLD - 4-Bit audio / cv mangler - Schlappi Engineering

video upload by Stazma

'Today I'll show you some stuff with the new module by Schlappi Engineering, the BTFLD! It's the new member of the 4-Bit logic family by Schlappi Engineering but this one is the most audio oriented as it's main use are wavefolding, fuzz and distortion. It's small but hell it sounds BIG. It can also make weird things to CV and gates, and even be used to convert any signal into 4-Bit so you can use it to modulate / feed your other 4-Bit modules (Nibbler / BTMX)."



BTFLD (Bit Fold) is a distortion, wavefolder, and four bit asynchronous analog to digital converter. The folding output at audio rate provides a hard sync like timbre in a unique sawtooth wavefolder circuit.

The stepped output is a type of bit crushed effect and the square wave outputs provide different frequency multiplications or distortions.

Rhythms can also be generated by putting envelopes or LFOs into the input and using the bit outputs as gates.

It can also be paired with the rest of our four bit binary system (Nibbler, BTMX) for experiments in four bit computing and unusual logic based patching.

Features

6 related outputs
Unique wavefolding circuit
Switched range for bipolar audio signals or unipolar modulation signals
Acts as distortion/wavefolder or rhythm generator depending on input
4 bit binary output interfaces with other logic modules
LED indication for every input and output
6 HP

CLICK FOR MORE »

SCHLAPPI ENGINEERING Introduces Nibbler Four Bit Digital Accumulator Module

Overviewvideo upload by SCHLAPPI ENGINEERING

"The Nibbler is a module about exploring the musicality of counting in binary."

Meet the Nibbler by Schlappi Engineering

video upload by Stazma

An introduction to the Nibbler by Schlappi Engineering

video upload by Stazma

via SCHLAPPI ENGINEERING

"**This is technically a preorder but modules should ship by the end of the year, we should also have pictures of the silver version by Dec 18th**

The Nibbler is a four bit digital accumulator based on CMOS logic. This means that it counts in binary from zero to fifteen, with inputs and outputs for individual bits as well as stepped voltage outputs (digital to analog converters). It does this with individual logic chips instead of a CPU.

The concept here is that counting in binary (and its expression in bits) is inherently musical, and with slow clock speeds we can use it to create both rhythms and modulation voltages (or melodies). At audio rate we can generate subharmonics and modem-like sounds (or noise).

Features

5 rhythmically related gate outputs (or audio rate square waves)
2 stepped voltage outputs
Second stepped voltage has selectable phase offset
Cherry MX Brown switch for reset
4 gate inputs for modulation
Chainable using carry in and out
Reset input can be used as hard sync at audio rate
Subtract input can add variation to sequences
Synchronous and asynchronous output modes
Shift register functionality
CMOS logic deisgn
12 HP
Skiff friendly 28mm depth (35mm including cables)
POWER DRAW: +12V 37mA, -12V 17mA"

Eurorack performance rig rundown with Eric Schlappi of Schlappi Engineering

DivKidVideo

"Here’s a video with Eric Schlappi from Schlappi Engineering going through his Eurorack performance set up that was filmed as part of DivKid’s West Coast Adventure (playlist below) last year. We get a look at his two voice system, focussing on distortion and harmonic control and saturation and simple drum set up that allows him to perform on a relatively small modular set up.

DivKid’s West Coast Adventure [embedded below]

Check out the exclusive uncut performance jam from Eric at https://www.patreon.com/divkid and with your support gain access to exclusive files, posts and videos.

Schlappi Engineering - https://bit.ly/schlappi

This video is sponsored by the good people at Patchwerks who helped created the amazing trip and time I had on my West Coast Adventure!"

DivKid’s West Coast Adventure


Note this starts with the same video above as it was the latest at the time of this post. You can skip around using the player controls on the bottom left of the player.

Playlist at the time of this post:

Eurorack performance rig rundown with Eric Schlappi of Schlappi Engineering
After Later Audio interview // Talking musical history, Eurorack clones & original module designs
Nathan Moody // Performance interview & Rig Rundown
Malekko Heavy Industry // Manthers, Modulars and Russian Submarines
HOW TO AMULETS with special guest AMULETS // live studio performance and rig rundown
AI Synthesis interview // synth DIY, new Eurorack modules, personal background and bad tomatoes
Marcus Fischer studio performance & live rig rundown // ambient tape loops with guitar and Eurorack
Eurorack design philosophy, talking to strangers on buses & more with Acid Rain Technology
The road to Velocity and the emerging Seattle synth scene
DivKid's West Coast Adventure

SCHLAPPI ENGINEERING Introduces BTMX Rhythmic Logic Module

video upload by SCHLAPPI ENGINEERING

"The Nibbler is a hands on logic module for controlling and manipulating gates and rhythms in real time."

00:00 Intro
01:01 Patch Description
02:26 Logic Functions: OR
03:52 Logic Functions: AND
04:58 Logic Functions: XOR
06:08 Logic Functions: ADD
07:08 Logic Functions Summary
07:45 Tips and tricks
09:43 Just Jamming

BTMX by Schlappi Engineering - Demo

video upload by Stazma

"Today I'll show you some stuff with the new module by Schlappi Engineering, the BTMIX!
Lot's of fun stuff do with this one when it comes to control or loose control of your rhythms and create weird stepped voltages patterns. From gate hub to audio rate mangling."

"BTMX (BitMix) gives hands on control over logic and rhythmic gate signals with a switch for every input and 4 different logic functions.

It is a 4 channel selectable logic function module, with each channel having two inputs. All channels share the same logic function and the gate outs are summed with binary weights to create a stepped voltage to generate melodic or modulation signals from the outputs.

It pairs well with the Nibbler, other 4 bit logic modules, or any modules that generates gates (such as clock dividers and sequencers) and can also be used at audio rates.

Features

8 switched inputs
4 dual input logic functions (AND, OR, ADD, XOR)
4 gate outputs
1 stepped output
LED indication for every input and output
Works at LFO and audio rate
8 HP
Current consumption: +12v 26mA, -12V 10mA"

Befaco Noise Plethora Demos by Friendly Noise

Playlist:

1. “Befaco Noise Plethora - Azatoth’s flutes” by Friendly Noise

This is my first video with the Befaco Noise Plethora, a triple digital noise generator with also three analog multimode filters, offering plenty of flexibility to shape the sound.

Modules: Befaco Noise Plethora, Befaco Rampage, SSF Vortices, Intellijel Quadrax, Intellijel Planar, Xaoc Kamieniec, Xaoc Tallin, Qu-bit Data Bender.
+
Strymon Nightsky reverb

2. “Noise Plethora 02 - Sequencing Programs” by Friendly Noise

The programs of Noise Plethora can be sequenced manually or using the CV inputs for each channel. That greatly adds to the sonic variations of the module.

Modules: Befaco Noise Plethora, Befaco Rampage, IOLabs Flux, SSF Vortices, Intellijel Quadrax.
+
Strymon Nightsky reverb

3. “Noise Plethora 3 - Drum Kits” by Friendly Noise

Because Noise Plethora is a triple noise generator, you can set up some drum kits using only this module. Clever use of modulation for the sound parameters, filter settings and (external) envelope shapes can results in many different sounds from just only one Noise plethora “drum kit”. :-)

Patch notes are included in the video.

Modules: Befaco Noise Plethora, IOLabs Flux, SSF Vortices, Intellijel Quadrax, Xaoc Tallin, QU-bit Data Bender.
+
Strymon Nightsky reverb

4. “Noise Plethora 4 - A Noise Landscape” by Friendly Noise

A live performance and tour de force using the third noise generator of Befaco Noise Plethora as the only sound source.

Patch notes are included in the video.

Modules: Befaco Noise Plethora, Befaco Percall, Befaco Rampage, Befaco Burst, IOLabs Flux, SSF Vortices, Xaoc Kamieniec, Xaoc Tallin, QU-bit Data Bender, Schlappi Engineering 100 Grit, Schlappi Engineering, Angle Grinder.
+
Strymon Nightsky reverb

5. “Noise Plethora 5 - Beautiful Noises” by Friendly Noise

A live performance using Befaco Noise Plethora as the only sound source.

Modules: Befaco Noise Plethora, Befaco Percall, Befaco Rampage, Befaco Burst, IOLabs Flux, SSF Vortices, Xaoc Kamieniec, Xaoc Tallin, QU-bit Data Bender, Schlappi Engineering 100 Grit, Schlappi Engineering Angle Grinder, Intellijel Quadrax, Intellijel Planar 2.
+
Strymon Nightsky reverb

6. “Noise Plethora 6 - Singing Noises” by Friendly Noise

Using an external keyboard to play melodies and sequences with Befaco Noise Plethora.

Patch Notes are included in the video.

Modules: Befaco Noise Plethora, Intellijel Quadrax, Xaoc Tallin.
+
Strymon Nightsky reverb, Arturia Keystep

7. “Noise Plethora 7 - Invoking Cthulhu” by Friendly Noise 

Modules: Befaco Noise Plethora, Intellijel Quadrax, Xaoc Tallin.
+
Strymon Nightsky reverb

Amplitude Modulation w/ SCHLAPPI ENGINEERING for PCC (Portland Community College)

SCHLAPPI ENGINEERING

"A detailed discussion of Amplitude Modulation using Schlappi Engineering modules created as part of Portland Community College's Music & Sonic Arts program in Spring 2020.

PCC Sonic Arts Program (Specific class is MUC-201 Analog Modular Synthesis):
https://www.pcc.edu/programs/music-an...

There are a few Schlappi Engineering prototypes used in the video (4Q, Weld), there are no guarantees these will ever be released."

Eric Schlappi and Bastien Lavaud - Slicers

video upload by SCHLAPPI ENGINEERING

"Part of an improvisational audiovisual jam session between Eric Schlappi and Bastien Lavaud on November 5th 2022 in Grenoble, France.

This session followed soon after a performance at Modularsquare in Paris and uses similar material.

Audio is Eric Schlappi using mostly Schlappi Engineering modules with a heavy focus on modulating a Three Body oscillator for the lead and an Angle grinder for the kick.

Video is Bastien Lavaud using a mix of @syntonie1487 and @lzxindustries video modules and follows soon after the release of his VU007B and VU003B decoder and encoder modules, allowing for a complete HD video synthesis workflow.

Please watch in the highest available quality as compression is quite harsh on the video synthesis methods used.

Syntonie
https://syntonie.fr/

Eric Schlappi
https://ericschlappi.bandcamp.com/

Schlappi Engineering
https://schlappiengineering.com/"

Perfect Circuit Chat w/ Schlappi Engineering Hosted by BboyTech and Trovarsi 5/28/20 6-7PM PST

Published on May 28, 2020 Perfect Circuit

"Eric Schlappi of Schlappi Engineering will be joining us live on Thursday 5/28/20 at 6PM PST for Perfect Circuit Chat with our hosts BBoyTech & Trovarsi. Schlappi Engineering makes modules that let you create, transform, and distort your sounds in new and unique ways. Eric will play a short live jam and then talk to us about his music and his modules, including his upcoming triple digital FM and phase modulation oscillator—Three Body.

Schlappi modules available here:
https://www.perfectcircuit.com/schlap..."

Schlappi Engineering 100 Grit // Eurorack filter, VCA, distortion & feedback noise instrument

DivKidVideo

"Here we have the fantastic solo noise instrument, characterful filter (clean or distorted), VCA, feedback machine and more … the 100 Grit from Schlappi Engineering.

The 100 Grit is a 4 pole low pass filter with two inputs we can push into soft character saturation, multiple modulation points including a novel set of brass ball touch points and output VCA. There’s a clean and distorted output with additional 100x gain switch we can be performed as a momentary switch as well. Throughout the module there’s normalised feedback from different points of the circuit routing different filter pole outputs to CV the output VCA, distortion circuits points to the inputs of filter modulation all of which give a series of unique and interactive tone shaping options."

See this post for additional details on the Schlappi Engineering 100 Grit. See this post for an interview with Eric Schlappi, and see here for additional demos. See the dealers on the right for availability.

Schlappi Engineering BOUNDARY / unique 4Q VCA and function generator / extensive playthrough

video upload by BRiES

"In this video about BOUNDARY by Schlappi Engineering I demonstrate the features of this function generator/vca. Especially the 'bound' parameter on the envelope section gives us behaviour that's very unique to BOUNDARY. I tried to show every feature of the module, but I forgot to mention a few of the LEDs on the frontpanel (those tell you what's happening inside). I'm sure if you've watched the video you'll be able to figure those out when you do a quick glance at the manual.

The build quality is just great, everything is really sturdy, the knobs are heavy duty and I'm not at all affraid that I'll wiggle them off of the unit at any point in time.

Boundary manual: https://cdn.shopify.com/s/files/1/054...

If you'd like to support what I do you can do so using Ko-Fi or Patreon:
http://www.ko-fi.com/BRiES
http://www.patreon.com/madebybries

0:00 intro
0:06 hi
1:35 patch examples
5:03 start overview
5:43 rise and fall
18:17 bound parameter
27:50 EOR
29:15 slew
34:06 rectify
37:40 4Q VCA / multiplier
50:33 closing thoughts
51:24 thanks for watching!

DISCLAIMER: This unit got sent to me by Jay from Schlappi Engineering (thanks btw!) to make a comprehensive video about it. In no way does this affect the content of the video: my only goal is to share how the module works, what you can and can't do with it, ... so you can make a better judgement whether BOUNDARY is something you need for your system or not."

Schlappi Engineering ANGLE GRINDER / ingenious vco, lfo, filter & distortion / extensive playthrough

video upload by BRiES

"In this video about Schlappi Engineering's ANGLE GRINDER I demonstrate the different aspects of the module seperately, before throwing it all together in a gritty mayhem of waveshaping and feedback.

ANGLE GRINDER is a versatile piece of gear that can be used to create, shape and mangle audio as well as CV signals. The filter sounds really nice and clean if you back off all the feedback and modulation, but once you start adding the GRIND section to the mix it can produce rich CV controllable distortion. If you use ANGLE GRINDER as a VCO or LFO the linear and exponential FM inputs provide plenty of modulation options. The quadrature LFO outputs can bring life to patches and by adding feedback you can change the shape of the generated sine waves drastically. You can even use ANGLE GRINDER as a make-shift sequencer."

Schlappi Engineering ANGLE GRINDER posts

Massive Eurorack Setup for Sale

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

via this auction

CLICK FOR MORE »

Schlappi Engineering THREE BODY / extensive playthrough / extremely versatile complex vco

video upload by BRiES

"In this video about Schlappi Engineering's THREE BODY I try to explain and demonstrate the multitude of functions, modulation options, inputs and outputs. There's sound examples scattered throughout the video to break up the monotony of me talking all the time.

THREE BODY is so very versatile and due to it's precise logic based core functionality it's very straightforward to dial in precise FM or PM tones that are usually quite impossible to achieve with regular analog vcos. If you want the dirt of waves bulking and crashing into each other (regular 'free' fm and pm), it's just a flick of a switch and you're there.

Because it's a very long video please have a look at the chapter markers at the bottom of this description box. Those should make it easier for modern crowds to navigate the video. You can of course go retro and just sit back and enjoy the show, but you might have to pause the video halfway to fetch drinks and icecream (and possibly for a bathroom break).

I hope you enjoy this extensive playthrough."

Also see Schlappi Engineering's Three Body Hardware Design and Why I Used an FPGA

Eric Schlappi and Bastien Lavaud live AV set for Berlin Modular Society on May 14th 2023

video upload by SCHLAPPI ENGINEERING

"This is a live semi-improvisational audio visual set at Klunkerkranich in Berlin for the @berlinmodularsociety at their post-@superboothberlin DIY kit fair.

Audio is by Eric Schlappi of Schlappi Engineering leaning heavily on the Three Body and 100 Grit.
Video is Bastien Lavaud of @syntonie1487 showcasing his new video modules the Isohélie and Animate.

See Schlappi modules at: https://schlappiengineering.com/
See Syntonie modules at: https://syntonie.fr/
Hear Eric Schlappi albums at: https://ericschlappi.bandcamp.com/

Audio and some performance video clips are taken with permission from the Berlin Modular Society live stream, the direct video synthesizer footage was both generated and recorded by Bastien Lavaud.

Thanks so much to Jacky (https://jacqnoise.cargo.site/) for organizing the show and also to everyone who came!"

Eric Schlappi and Bastien Lavaud - Orbital Mirrors

video upload by SCHLAPPI ENGINEERING

"Part of an improvisational audiovisual jam session between Eric Schlappi and Bastien Lavaud on August 26th in Grenoble, France, lightly edited afterwards.

Audio is Eric Schlappi using a prototype of the Nibbler as a crude sequencer and another Nibbler at audio rate dividing down the lead synths frequency to create the bassline. The lead is a Three Body and the Kick is formed with the Angle Grinder and Boundary modules. There are also some overdubbed blasts of noise using a Nibbler at audio rate with the shift register functionality.

Video is Bastien Lavaud using a mix of @syntonie1487 (including the upcoming Solaire and Seuils modules) and @lzxindustries video modules as well as some video feedback through a camera.

Please watch in the highest available quality as compression is quite harsh on the video synthesis methods used.
Syntonie
https://syntonie.fr/

Eric Schlappi
https://ericschlappi.bandcamp.com/

Schlappi Engineering
https://schlappiengineering.com/"

Big Mono Synth Pacth | Schlappy Patching with Stazma

video upload by SCHLAPPI ENGINEERING

Schlappy Patching with Stazma

"Here we go for another episode of Schlappi Patching I'll try to patch up a Minimoog style voice with my Schlappi system, and it will of course get out of hand. It's also a first try on my side for the yet to come Dual Vector Foil module."

00:00 Intro
00:50 Minimoog style patch
07:21 Sequence jam
08:46 Let's go weird
11:28 End jam


Patch From Scratch | Schlappy Patching with Stazma

video upload by SCHLAPPI ENGINEERING

"Episode 3 for Schlappy Patching!
I just got a new 6U, 98HP case to make a proper Schlappi System (with some additional modules from other brands) and this is the celebration of that, my very patch on it, a first dialog with the 'machine'.
Not the most musical but quite a fun journey."

Schlappi Engineering BTFLD / trying to explain the folding / modulation

video upload by BRiES

"BTFLD by Schlappi Engineering is a unique take on the wavefolding concept, as it uses binary conversion (and clever engineering) to create breaks in the waves without really changing the shape of the slopes. You have to see it otherwise it won't make a lot of sense. That's what this video is about.

At this point I'm really still getting to know BTFLD by ‪@SCHLAPPIENGINEERING‬ but I wanted to share a few insights. Everything was already patched up as I was figuring things out so it made sense to just set up my camera and do a quick video."

Eric Schlappi - This Is Not My Grave

video upload by SCHLAPPI ENGINEERING

"Music video for This Is Not My Grave from the upcoming album Peeling Deck Plates.
Music is by Eric Schlappi made with Schlappi Engineering eurorack modules and a Metasonix D2000 drum machine.
Video is also by Eric Schlappi utilizing video feedback with a video modular system composed primarily of LZX and Syntonie modules."