Fluyt - Felucca synth engines for Korg drumlogue & microKORG2

And via Regroove | RGRV on reddit:

"This is generated code, but mostly with my own code as reference (such as examples, build infra).

Don't want the FM-1 to have all the fun by themselves. Let's join them ..."

via https://rgrvdotnl.itch.io/fluyt-logue

"Fluyt - Felucca's engines for logue

Felucca is an open firmware for the M-VAVE FM-1, a small synthesizer built around a JieLi pi32v2 DSP. Its sound engines are plain integer C, self-contained, and each one is a different way of 'whistling'. Fluyt takes nine of them and ships each as its own KORG drumlogue or KORG microKORG2 unit.

This is based on Felucca and associated FM-1 firmware which is mostly AI-assisted code. Personal examples, units, and build-infra code were used to create these units.

Why Fluyt?
The name is symbolic, as fluyt is a kind of Dutch vessel, mostly used for trade during the 16th century. Just like in the old days, I hope this 'trading' will happen between the communities. And, the word also means whistle."

Side note: Felucca is by Hügelton Instruments. You can find additional posts mentioning Felucca here.

Polly: a pocket arranger for the M-VAVE FM-1

video upload by Charles Vestal

You can find the M-VAVE FM-1 on Amazon.

"Polly is free firmware that turns the M-VAVE FM-1 into a pocket arranger, inspired by the Yamaha QY70. Play a chord, and a band of eight instruments follows it.

16 styles, each with an Intro, two grooves, fills and an Ending
Write your own chord progressions, and build songs from them, section by section
Record two melodies along the song, and fix any note in the piano roll
128 General MIDI sounds and a drum kit, with a mixer, reverb and chorus
Make your own grooves, save up to four songs, and back them up from the browser
Play from a MIDI keyboard, send MIDI to your computer, and mirror the screen

New in 0.4: melodies start as a choir, and the Ending stays in tune when you ask for it mid-song.

Install from Chrome or Edge, or try it in your browser first: https://charlesvestal.github.io/fm1-p...
Lessons with videos: https://charlesvestal.github.io/fm1-p...
Source (GPL-3.0): https://github.com/charlesvestal/fm1-...

0:00 Play a chord, and the band follows
0:14 16 styles
0:28 Grooves and fills
0:43 Build a song
0:51 Record melodies
1:02 Edit notes
1:16 Sounds, mixer and effects

Built on Felucca by Hügelton Instruments. The piano roll follows the design of Melodee by Kerem Kilic. Sounds by Sonivox EAS. Polly isn't affiliated with Yamaha or M-VAVE."

JIANT FM: a living, bio-synthetic firmware for the M-VAVE FM-1

video upload by JIANT

You can find the M-VAVE FM-1 on Amazon.

See the playable browser link for JIANT below.

"What if a pocket synth behaved less like a tool and more like an organism?
JIANT FM is a free, open-source alternative firmware for the M-VAVE FM-1, made for playing live and building whole songs without a computer. The screen works like a thermal camera: every engine is a living being drawn in lines that swells, glows and changes shape with what you play. HOME is an ecosystem of four creatures, one per track.
What's inside:
🧬 8 synthesis engines, no samples: ANALOG, FM6 (Dexed, imports .syx), PHASE, LOFI with bytebeat, VOICE, WHEEL, NOISE and DRUM-X
🥁 DRUM-X: Microtonic-style synthesized drums with A/B morph, FOLD and FM
🎲 Dice everywhere: SELECT rolls a new sound, and macros land only on what's playing
🎛 A filter on every engine: LP, HP, BP and a COMB tuned to the note
✨ Five reverbs: ROOM, SPRING, SHIMMER, RESO tuned to your scale, and a granular CLOUD that freezes
⚡ Punch-in FX you play on the keys and record as automation
🎼 8 songs with sections, scenes and live chaining, recorded while you play
🔊 An always-on master leveler, so every patch sits at a consistent volume
▶ Try it in your browser (same code, with sound): https://juanjiant-bit.github.io/JIANT/
💾 Web installer: https://juanjiant-bit.github.io/JIANT...
📖 Source and manual: https://github.com/juanjiant-bit/JIANT
A fork of Felucca by Hügelton Instruments, with its song system from SLOOP. GPL-3.0.
⚠️ In development (v0.5): back up your flash before installing.
#synth #firmware #MVAVE #FM1 #opensource #synthesizer #bytebeat #granular"

Nikolator - Musical Tesla Coil simulator (demo)

video upload by Hügelton Instruments

"Nikolator is a physical modeling synthesizer based on a musical Tesla coil.
Instead of using conventional oscillators or samples, it generates sound by modeling the resonant circuit, discharge and resulting sound in the air.
We have made the Tesla coil itself into a playable software instrument.

Features
・Physical modeling of a musical Tesla coil
・Monophonic and polyphonic modes
・Voltage, current and discharge controls
・Adjustable arc length, branching and channel behavior
・Drive envelope
・4 × 6 modulation matrix
・Paraphonic valve low pass filter
・Twenty-two factory presets and user presets
・MIDI velocity, pitch bend, modulation wheel and sustain pedal with assignable modulation routing

Available for macOS (AU / VST3 / Standalone) and Windows (VST3).
https://hugelton.itch.io/nikolator"

follow-up to this post

NIKOLATOR — Coming Soon

video upload by Hügelton Instruments

"A Tesla coil software synthesizer by Hügelton Instruments.

Follow on itch.io for the release.
https://hugelton.itch.io"

See the Hugelton label below for more of their creations.

SynBe - Inspired by 1975 Japanese Synth Bass (demo)

video upload by Hügelton Instruments

"This series' first synthesizer simulation is of a rare Japanese-made bass synthesizer.
This synthesizer possesses features rarely seen in modern synthesizers, such as a unique traveler and simplified oscillator sources.
We has poured its passion for this hard-to-find synthesizer into this simulation software.

Features
・Monophonic synthesizer architecture
・Triangle, Square, Saw, Pulse and Phaser modes
・4’, 8’ and 16’ octave ranges
・Classic Traveler filter
・Twelve factory presets
・Full MIDI CC control
・Separate modern modification section

Available for macOS (AUv2 / VST3) and Windows (VST3).
https://hugelton.itch.io/synbe"



SynBe is a monophonic bass synthesizer inspired by a 1975 Japanese Synth Bass.

I had wanted one for a long time, but finding one is difficult. Rather than wait for the right unit to appear, I started with what was still available: surviving technical documentation, published circuit information, material from related instruments, and other technical references.

Some sections are well documented. Others are incomplete. Where the original circuit cannot be fully determined, SynBe uses the available evidence, related designs, conventional modelling techniques, and listening tests.

Features

Monophonic synthesizer architecture
Triangle, Square, Saw, Pulse and Phaser modes
4’, 8’ and 16’ octave ranges
Classic Traveler filter
Twelve factory presets
Full MIDI CC control
Separate modern modification section
2x internal oversampling
Versioned DSP kernel
Special nice & great graphics by ME!
Archaeology

Most of my previous reconstruction projects started with an instrument sitting in front of me.

SynBe did not.

The reconstruction began with surviving technical documentation and circuit information. I also studied material from contemporary and related instruments where the available information was incomplete.

The signal path was reconstructed section by section, from the oscillator and waveform circuitry through the Traveler filter and VCA.

CLICK FOR MORE »

Trix - 1973 Rhythm Machine Circuit Modeling (demo)

video upload by Hügelton Instruments

"Trix is a software recreation of a Japanese rhythm machine from 1973, built through hands-on analysis of an original unit and its analog circuitry.

Trix uses no samples. Every sound is generated in real time by models based on the original electronic circuits, from the resonant drum voices to the metallic percussion and noise-based sounds.

Features

• 100% synthesized
• Built-in rhythm patterns and sequencer
• Step sequencer and pattern editor
• Individual controls
• Master Tone and Over Drive
• Internal / Host / MIDI clock
• macOS AUv2 / VST3
• Windows VST3

Available for macOS (AUv2 / VST3) and Windows (VST3).

https://hugelton.itch.io/trix"

CLICK FOR MORE »

Funicular – Real-time Audio Effects for Playdate

video upload by Hügelton Instruments

"Funicular is a real-time audio effects processor for Playdate.

• Live audio input
• 3-slot DSP chain
• 14 built-in effects
• Stereo output

https://hugelton.itch.io/funicular

As Drum Machine
https://github.com/hugelton/SumaShield"



Funicular transforms Playdate into a portable real-time audio effects processor.

Connect an external audio source using a standard CTIA headset splitter, then build a chain of three DSP effects to create everything from tape wobble and vinyl coloration to delay, fuzz, filters and bit crushing.

The DSP engine is written entirely in C and processes live audio with low latency. Effects can be freely reordered, presets can be saved and recalled, and the crank provides an intuitive way to adjust parameters.

Features

Real-time audio processing

3-slot effect chain

14 built-in DSP effects

Preset management

Stereo output

Low-latency C DSP engine

Designed for Playdate OS 3.1+

Kepra - Circuit-Modeled Rhythm (demo)

video upload by Hügelton Instruments

"Kepra is a rhythm instrument developed through detailed analysis of an original Japanese vintage programmable rhythm machine.

Rather than relying on sampled sounds, Kepra recreates each instrument by studying the original analog circuits, measuring waveforms, analyzing spectral content, and reproducing their behavior in software.

Features

• Circuit-inspired drum synthesis
• 12 drum voices
• 16-step sequencer
• NOTE / FLAM / ACC layers
• 8 pattern banks
• Stereo mixer
• Drive and character section
• Internal, host, and external MIDI clock

Available for macOS (AUv2 / VST3) and Windows (VST3).

https://hugelton.itch.io/kepra"


"Hardware Archaeology

Developing Kepra felt less like sampling a drum machine and more like studying an archaeological artifact.

Every instrument was investigated through circuit analysis, waveform measurements, timing analysis, and spectral comparison to better understand how the original hardware produced its sound.

Rather than reproducing recordings, Kepra attempts to reconstruct the behavior behind them.

The Missing Instrument

One voice in Kepra did not exist on the original hardware.

The Shaker was designed as an 'imaginary expansion'—a voice inspired by the architecture and character of the original instrument.

Instead of adding a modern sample-based shaker, it was developed by asking a simple question:

'If the original designers had decided to include a shaker, how might they have built it using the same technology?'

The result is not a historical reproduction, but a speculative reconstruction that aims to remain faithful to the design philosophy of the original machine.

Not an Emulator

Kepra is not intended to be a museum piece.

It is a modern rhythm instrument built from careful hardware analysis, extending the ideas of a classic Japanese drum machine into new creative territory."

Hügelton Instruments Introduces K104E Digital Envelope Generator for Eurorack & VCV Rack

video upload by Hügelton Instruments

"The K104E is a dual digital envelope generator.

Two independent ADSR envelope generators feature continuously adjustable curve shaping via sliders, allowing precise control beyond fixed ADSR responses.

A rear-panel 'hidden function' enables envelope stage looping, making the K104E usable as a periodic modulation source as well.

This demo used a KORG MS-20 as sound sources.

note: International shipping outside Japan is currently in preparation for next version."

Website:
https://hugelton.com/k104e

VCV Rack: https://library.vcvrack.com/Hugelton

CLICK FOR MORE »

Hügelton Instruments Introduces K102E Digital Compound Oscillator

video upload by Hügelton Instruments

"The K102E is a digital compound oscillator rooted in our original “Island Synthesis” philosophy. 2 independent digital cores are blended via Phase-Modulation, Cross-Fade, or Additive Mix to create dense, animated harmonics—all in a compact Eurorack module.

Website: https://hugelton.com/k102e

VCV Rack version: https://library.vcvrack.com/Hugelton/..."


The K102E is a digital compound oscillator module developed based on the unique "Island Synthesis" philosophy.

Features

3 independent oscillators for rich sound generation

Stable oscillation and diverse wavetable synthesis achieved through DSP processing by microcomputer

Two main oscillators (A/B) function similar to typical complex oscillators

Selection from 3 synthesis methods (phase modulation, multiplication, crossfade)

Hard sync and detune functions

8 types of waveforms following 80's wavetable synthesizers

Reading position controlled by harmonic specification index

Third oscillator (C) functions as an auxiliary oscillator

Selection of any frequency from low to high

Can be used as an LFO or cross-modulator

External control interfaces include standard CV inputs with octave/volt control, CV control for harmonics (wavetable read position), and CV input for alpha parameter of waveform synthesis

Images:

Top: VCV Rack version

Bottom: eurorack version

Playdate Organic Sound Generators

video upload by hügelton Instruments

"you can download it on
https://hugelton.itch.io/posg"

"Yacht" - Sequencer App for Panic Playdate v0.1 Beta Released

video upload by hügelton Instruments

via https://kurogedelic.itch.io/yacht

"🍾 v0.1 beta is released!

This app is still in beta version. It may not work the way you want.
we need beta tester or development advisor

it can make the song from 3(synth)+4(drums)track 16step sequencer with 32step song structure.

this application is currently in very early beta stages. (super bugs)

I’m looking for your test reports and opinions on adding new features.

TODO:

external clock sync (via audio splitter)
master effector
editable wavetable synth
drum sampler
filter
copy & paste patterns
file operation
sequencer direction (<-,->,<->,RND)
more size of song structure and loop actions"

Yacht - devlog #3

video upload by hügelton Instruments

"Yacht is sequencer app for Panic Playdate.
devlog #3: crank navigation"

Yacht - devlog #2

video upload by hügelton Instruments

"Yacht is sequencer app for Panic Playdate.
devlog #2: drums and UI planning"

hügelton Instruments Introduces Yacht Sequencer for the Panic Playdate

video upload by hügelton Instruments

"music studio for panic playdate.
now, in development.

we are looking for beta testers.
please contact at @hugelton_ on X"

We have a new maker on the site. hügelton Instruments wrote in with some additional details:

"We are developing a sequencer app 'Yacht' for Panic Playdate. (Like 'nanoloop')

Now, 'Yacht' only has a sequencer screen,
It can play 4 synth tracks.
In the future, we would like to add song edit, synth edit and drum tracks.

We are looking for support from a small number of 'mobile music creators' in beta testers."

If you are interested contact hügelton Instruments at @hugelton_ on X.