UB_Poly16

A 16-voice virtual-analog polysynth — a Juno-106 inspired instrument, augmented. VST3 + Standalone (Windows), built with JUCE 8. A tribute by THE UNBoRN / RetroVault.

Features

• 2 DCOs per voice: polyBLEP saw & pulse (PW + PWM), triangle, sub-oscillator, noise
• Hard sync and ring modulation (DCO1 → DCO2), DCO2 coarse tune (±24 semitones)
• Juno-style non-resonant HPF (4 positions) + multimode VCF (LP/HP/BP, 12 & 24 dB/oct, drive), env / LFO / velocity / keytrack modulation
• 3 ADSR envelopes (amp, filter, pitch — for sync sweeps), LFO (tri/sine/saw/square/S&H) with delay
• Aftertouch → cutoff / vibrato, and an attack-click transient
• Unison up to 7 voices, JP-8000-style detune curve with stereo spread
• Voice modes: Poly / Mono (retrigger + note memory) / Legato (single-trigger), with Last / Low / High note priority and cross-voice portamento
• Chord memory (learn a chord, play it with one key) and per-knob MIDI Learn
• Arpeggiator with a 16-step groove sequencer — per-step on/off, accent, tie and ratchet, global swing, host-PPQ phase-lock, and 9 note orders
• Master FX: Juno-style chorus (I/II/I+II), tempo-synced stereo/ping-pong delay, reverb
• Oscilloscope
• Preset browser with categories, live search and favourites — 131 factory presets (including a "Legends" bank of classic-synth homages), user presets + bank import/export
• Resizable custom GUI (azur / mauve theme)

The built-in preset browser:

Building (Windows)

Requirements: Visual Studio 2022 (or Build Tools) with the C++ workload and CMake, plus a local JUCE 8 checkout.

cmake -S . -B build -G "Visual Studio 17 2022" -A x64 -DUB_JUCE_DIR="C:/path/to/JUCE"
cmake --build build --config Release

Artifacts land in build/UB_Poly16_artefacts/Release/ (Standalone/UB_Poly16.exe and VST3/UB_Poly16.vst3). An Inno Setup script is provided in installer/.

ASIO (optional, local builds only)

The Steinberg ASIO SDK is proprietary and not redistributable, so it is not part of this repository and release binaries are built without ASIO. For a personal build with ASIO support, download the SDK from Steinberg and configure:

cmake -S . -B build -G "Visual Studio 17 2022" -A x64 `
    -DUB_JUCE_DIR="C:/path/to/JUCE" `
    -DUB_ASIO=ON -DUB_ASIO_SDK_DIR="C:/path/to/asiosdk/common"

See THIRD_PARTY_LICENSES.md for details.

License

GNU AGPLv3 — see LICENSE. JUCE is used under its AGPLv3 option, the VST3 SDK under its GPLv3 option. VST® is a registered trademark of Steinberg Media Technologies GmbH.