TYPE-2 Core Engine - Initial Release

TYPE-2 Initial Release (v1.0.0)

This initial version establishes the foundational C++ DSP architecture, the hardware interaction layer, and the real-time visual engine running on the ESP32-S3.

Core Audio & DSP Engine

• Polyphony: 7-voice hybrid DSP engine utilizing fast polynomial saturation.
• Dual-Rate Architecture: Optimized processing separating control rate (envelopes/LFOs) from audio rate algorithms.
• Filters: Implemented a factorized 24dB/Octave Moog Ladder Filter.
• FX Chain: Built-in Tube Overdrive, Analog Slop (pitch drift), and a large-buffer Studio Digital Delay (utilizing PSRAM).

Hardware & Interaction Layer

• Capacitive Touch Keyboard (MPR121): Custom hardware debounce (0x22) and charge current configuration (0x3F / 63µA) specifically calibrated to support copper tape keys while eliminating electromagnetic interference and ghost touches.
• User Interface: Seamless rotary menu system via KY-040 encoder and an OLED SSD1306 display.
• Visuals: Real-time topological grid rendering that reacts to active voice amplitudes without blocking the main audio core (Thread-safe architecture).

Default Firmware Variables

• Default Waveform: Sawtooth (Index 3).
• Master Volume: Safely initialized at 15% (including a smooth 15% boot chime)

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