SUPERBOOTH 2021 - Schlappi Engineering - Boundary

video upload by sonicstate

SCHLAPPI ENGINEERING Boundary Overview Part 1

video upload by SCHLAPPI ENGINEERING

"The Boundary is a multi-function cycling slew and four quadrant VCA. In this video we go over some basic envelope/vca usage, bouncing ball fx with the BOUND input, and using it as a clock or frequency divider."

"The Boundary is a multi-purpose modulation and signal control center. It consists of a cycling slew and a four quadrant multiplier (VCA).

The cycling slew (which can be used as an envelope or LFO) has individual control over rise and fall, rate and shape, as well as dedicated inputs for trigger, slew (for gates or pitch cv), full wave rectification (for envelope following), and a unique BOUND input which allows for bouncing ball effects and additional modulation of the envelope.

The four quadrant multiplier is an OTA design and is usable as a VCA or ring modulator with a soft limiter on the output to tame extreme signals or push into distortion.

LFO and modulation oscillator (from cycles measured in minutes to high audio rate)
Trig input can be used for attack-decay envelope
Slew input can be used with gate signals for attack-release envelope
Slew input can also be used as portamento for v/oct signals
Rectify input has a full wave rectifier to act as a high quality envelope follower
Bound input allows for unique bouncing ball effects and combined AM/FM modulation
Trig input can also be used for voltage controlled frequency division at clock or audio rate
EOR output can be used for gate/trigger delay
Four quadrant VCA allows for ring modulation
Soft limiter on the VCA output allows for taming or distortion of wild signals

All analog design
12HP
Skiff friendly 25mm depth
Max current draw: +12V 112mA -12V 59mA
$219"

Verdens Undergang: Dark ambience from Interstellar Radio

video by Richard DeHove

"Audio here is 100% generative and is an untouched, unedited slice (starting at 53-minutes in) from the 9-hour MP3 download version. Tones are from a relatively simple Eurorack patch with Interstellar Radio's (IR) two oscillator outputs going into an Erica Synths Black Dual VCF left and right. IR left-CV is being fed by a separate random source, right-CV from the error output, while the VCF is also getting smooth random CV into both sides as well as into resonance. A little noise is separately being fed through Anglegrinder. The whole thing then goes through a little Valhalla delay and Fabfilter Pro-R reverb. Pro-Q3 pulls everything into mono below about 200Hz which helps tie it all together. The stereo separation of the two oscillators is especially clear with headphones.

Video begins with a clip from Golem (1920), with the remainder being from the 1916 Danish sci-fi short Verdens Undergang (The End of the World).

Patrons can download a 9-hour long 256K MP3 of the audio. It is a full 9-hour one-pass stream and has no loops. Makes rather good sleep audio!

My site: https://richarddehove.com/
Lots of downloads for supporters on Patreon: https://www.patreon.com/richarddehove"

Cosmic noise & retro heterodyne: Interstellar Radio

video by Richard DeHove

"If you ever played around with shortwave radio noise as a kid then this is your grownup noise evolution. Schlappi Engineering's 'Interstellar Radio' module wants you to endlessly twiddle and wiggle and enjoy the lack of melody and float away in the squeals and static. With all the controls normalled to produce sound on their own this is also a great module for a small system or someone starting out in Eurorack (assuming you like noise).

Here I go through the basic controls, how to understand a little of what you're doing, and then indulge in lots of wiggling.

0:00 Intro about shortwave retro charm
1:45 Basic controls
2:20 Second oscillator
2:40 CV control
3:37 Error out to signal in
4:06 Passive low pass filter
4:38 Left, right and stereo outs
5:04 Error threshold
6:43 Modes
7:19 Gentle tweaks
8:40 Internal patching
11:23 External smooth random CV
12:26 Adding left and right again
17:30 Mode 2
19:42 Mode 3
20:18 Mode 1

My site: https://richarddehove.com/
Lots of downloads for supporters on Patreon: https://www.patreon.com/richarddehove"

Complex Sounds of the Interstellar Radio

video by Patchwerks Seattle

"In this video resident expert Matthew Piecora explores the vast timbers the Schlappi Engineering Interstellar Radio offers as a complex oscillator.

- Simulates the process of modulating and demodulating a signal for radio transmission
- Effect or complex oscillator (non v/oct)
- Voltage controlled aliasing, distortion, and frequency modulation effects
- Two wide ranging voltage controlled square wave oscillators with individual outputs
- CARRIER oscillator converts input into high frequency pulse train
- DEMODULATOR oscillator inside control loop brings sound back to audio range
- CV applies external voltage control to oscillators or uses input signal as audio rate FM
- Internal oscillators can be replaced with external modulation sources
- TYPE selects demodulation loop type (changes timbre and response)
- ERROR output with threshold control
- TONE control for filtering out the harshest of frequencies
- All analog design
- 14 HP

Check it out here: http://bit.ly/interstellar_radio​

https://patchwerks.com/​​
Video by: Matthew Piecora (aka EZBOT), Steven Ly
https://www.ezbot.live"

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.

NYMS Stream Eric Schlappi Live Set 09-17-2020

SCHLAPPI ENGINEERING

"My set from the New York Modular Society Off The Grid stream on 09-17-2020"

Generative Patching: Krell and Benjolin

SCHLAPPI ENGINEERING

"A discussion of a few generative patching techniques and a patch breakdown of Todd Barton's Krell Muzak patch as well as an attempt at patching Rob Hordijks Benjolin with eurorack modules. This video is 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..."

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."

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

Three Body Prototype Sounds

Published on May 30, 2020 SCHLAPPI ENGINEERING

"A brief exploration with the Three Body, a triple digital FM/PM oscillator based on an FPGA platform.

I kind of drifted into harsh noise by cross modulating all three of the oscillators but it is also capable of the prettier side of FM.

No processing is used and all stereo FX are generated by phase modulation, two Maths (not shown) were modulating the phase and frequency indexes (build in analog VCAs).

The Three Body is expected to be available late fall/winter 2020, price TBA."

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..."

Podcast 307: Eric Schlappi

Published on Dec 22, 2019 20Objects

"There are a few modules that have been quietly creeping into discussions - and modular rigs - over the last few months. One manufacturer that keeps coming up is Schlappi Engineering - and especially the Angle Grinder module. I'm not sure how you make a quadrature oscillator sexy - but Eric Schlappi seems to have done it!

In this chat, we go over Eric's background, how he came up with some of his modules, some of the technologies that he's exploring for the future, and his own music-making (and performing) process. His modules are opinionated (in that they have design decisions that can drive you in certain directions), but in a way that can still allow you to maintain your own voice. He also talks about his own obsession with analog monosynths, and how this has influenced his own electronics development.

In addition to his modules, you can check out some of his recorded work on his Bandcamp site (https://ericschlappi.bandcamp.com/). Also, for Tier 2 (and above) Patreon supporters (https://www.patreon.com/darwingrosse), we have an extended interview about the performative aspects of the 100 Grit that is particularly interesting.

Enjoy!"

100 Grit Processing the Tom Cat

Published on Sep 10, 2019 SCHLAPPI ENGINEERING

"Jamming on the Tom Cat drum machine directly into the 100 Grit and exploring the touch points and some basic modulation possibilities"

See this post for details on the Schlappi 100 Grit.

Schlappi 100 Grit Eurorack Module

100 Grit Demo (overview/basics) Published on Aug 14, 2019 SCHLAPPI ENGINEERING

via SCHLAPPI ENGINEERING

"Available with either silver aluminum or black PCB panel!

The 100 Grit is a touch controlled distortion unit inspired by the output section of a vintage synthesizer. Sonically it can range from subtle tone shaping to complete sonic obliteration depending on the positions of the knobs and output chosen.

The 100 Grit consists of a low pass filter, VCA and distortion section with 8 touch points, voltage control over drive, resonance, and frequency, along with a plethora of feedback paths allowing it to operate as a hands-on performance instrument with or without any input.

The touch points enable touch controlled resistive patching between the cv points (gain, frequency, and resonance), sensitive points in the distortion circuit, and different distortion outputs for a mix of touch controlled audio rate modulation and crackle box-like noise freak outs.

The low pass filter is a 24dB self-oscillating transistor ladder type with a jumper selectable resonance compensation scheme allowing more bass and volume at higher resonance settings.

The VCA is an OTA based circuit, which when pushed past 75% will impart a soft distortion characteristic, turning a triangle wave into a sine before being finally driven into a square wave close to max. If the levels are kept lower it is a reasonably clean vintage-style output section.

The distortion circuit is driven by the VCA, allowing for a voltage controlled gain amount and goes from heavy to extreme, especially when the x100 gain switch is engaged or the various self-modulation/feedback paths are utilized. The circuit is loosely based on a headphone amplifier circuit cranked into instability and self-oscillation.

Each Audio and CV input is normalized to a different feedback path, allowing for wild, self-oscillating distortions and extensive tone control with no external CV applied, or full control from external sources."

Schlappi Engineering Intros 100 Grit Eurorack Module

Published on May 28, 2019 Synthtopia

"At Superbooth 2019, we talked with Eric Schlappi of Schlappi Engineering, who gave us an introduction to his latest Eurorack module."

Latest SUPERBOOTH Videos from Perfect Circuit

Published on May 20, 2019 Perfect Circuit

Playlist:

1. Patching Panda Holograms & Vibrazum Jam SuperBooth 2019

Patching Panda played this jam for us on a system made with their modules. They have a new triple oscillator called the Holograms that will give you tons of modulation options as well as a new design for their triple filter the Vibrazum.

2. Schlappi 100 Grit Sounds SuperBooth 2019

Schlappi has done it again with a new noisy eurorack module, the 100 Grit. It has touch points and produces awesome squealing and squeaking feedback tones when provoked.

3. Worng Soundstage Sounds SuperBooth 2019

Worng showed us how their Soundstage module moves your sounds around in the mix and makes it easy to get a clear spatialized mix with your eurorack sounds.

4. Shakmat Modular Jam SuperBooth 2019

Shakmat Modular showed us this quick jam using their modules to quickly put together and tweak a sequence on on eurorack setup. The Four Bricks Rook is an incredibly fast way to put together a rhythmic sequence.

5. Birdkids Raven & Unicorn Boom Sounds SuperBooth 2019

Birdkids showed us their Raven two VCO synth voice module and their kick drum, the Unicorn Boom at SuperBooth 2019.

6. Winter Modular EME (Eloquencer Midi Expander) Jam SuperBooth 2019

Winter Modular played this jam for using their new EME (Eloquencer Midi Expander) with an Eloquencer to program in this sequence and manipulate it live. The EME allows you to sync the Eloquencer with external midi clocks, control settings and program sequences into the Eloquencer and send midi out from the Eloquencer to sequence non eurorack gear.

7. Casper Electronics OMSynth Jam SuperBooth 2019

Casper Electronics had a laboratory setup at SuperBooth 2019 and they played this quick jam for us so we could hear some of the sounds their synths are capable of. The OMSynth will soon have a eurorack version and the Dark Matter as always produced some great feedback distortion sounds.

---
Supporters of MATRIXSYNTH get %10 off at Perfect Circuit! See the support page for details.

Superbooth 2019 - Schlappi Engineering 100 Grit Module

Published on May 17, 2019 sonicstate

"Eric Schlappi takes us through the features of Schlappi Engineering's new noise/distortion/feedback module with hands-on performance features."

BRUTAL DISTORTION from 100 Grit by Schlappi Engineering // Superbooth 2019

Published on May 14, 2019 DivKidVideo

"The new 100 Grit from Schlappi Engineering may be a Moog style ladder filter at the core but it certainly doesn't sound anything like the deep rich low pass filtering you'd expect from a Moog synth. It's brutal distortion, performance switching and touch plates add noise, self patched chaos options and more for harsh noise and driven distorted processing."

Schlappi Engineering Angle Grinder 1

Published on Mar 18, 2019 Dimitrios Sismanis

"First go with the Angle Grinder. Through Natural Gate and Strymon Magneto. FM from Cs-L."

Schlappi Engineering Angle Grinder