a587a43ff9
Dual-stage compressor (optical + VCA) with output transformer saturation. - Port-Hamiltonian T4B opto-cell model with implicit trapezoidal integration - Feed-forward VCA with 7 ratios, 6 attack/release presets, Dual release mode - 3 transformer types (Nickel/Iron/Steel) with 4x oversampled waveshaping - Analog-style needle VU meters, horizontal GR meters - Sidechain HPF, stereo link, independent section bypass - Full state save/restore, CI/CD for Windows/macOS/Linux
InstaShadow
Dual-stage mastering compressor plugin (VST3/AU/LV2) inspired by the Shadow Hills Mastering Compressor, built with JUCE.
Features
- Optical Compressor — Port-Hamiltonian T4B opto-cell model with physically accurate two-stage release and CdS memory effect
- Discrete VCA Compressor — Feed-forward Class-A topology with 7 ratio settings (1.2:1 to Flood), 6 attack/release presets, and Dual release mode
- Output Transformer — 3 switchable transformer types (Nickel/Iron/Steel) with frequency-dependent saturation and 4x oversampling
- Sidechain HPF — Variable 20-500 Hz high-pass filter to prevent bass-induced pumping
- Stereo Link — Linked or dual-mono operation
- Independent bypass — Each section can be bypassed separately
- GR Metering — Dedicated optical and discrete gain reduction meters
- State save/restore — All parameters persist with DAW session
Signal Flow
Input → SC HPF → Optical Comp (T4B) → VCA Comp → Transformer → Output
Build
Requires JUCE cloned at ../JUCE relative to this project.
cmake -B build -G "Visual Studio 17 2022" -A x64
cmake --build build --config Release
License
GPL-3.0