The OPLA is a four voices polyphonique virtual analog synthesizer It is based on the Marcel Licence work but with a lot of additions https://github.com/marcel-licence/esp32_basic_synth
It run on an ESP32 Audio kit board + a nextion screen + a specific Hansy Synth Board.
It is very simple to build it.
It include over 4000 waveforms from AKWF from adventure kid. https://www.adventurekid.se/akrt/waveforms/adventure-kid-waveforms/
- Small Format/Pocket Synth
- 4 Voices polyphonic
- 2 Oscillators per voice (sin/tri/square/pulse/noise/AKWF)
- More than 4000 AKWF waveforms included
- Wave shapping for the waveforms
- Detune between the 2 primary Osc
- One sub OSC (sin/tri/square/pulse/noise) with transpose -24 to +12 and detune
- Mix volume for OSC and SUB OSC
- Pan between notes
- Noise Generator (Pre or Post Filter)
- Multi mode filter with resonance and KbTrack (2LP/2HP/2BP/2NP/1LP/1HP/1BP/1NP)
- EG ADSR for Filter/Amplitude/Pitch (bipol for Filter and Pitch). EG can be loop.
- 2 LFO route to different destinations
- LFO Shape Sine/Saw/Inv Saw/Square/S&H/Noise
- LFO Mode Free/Sync/One Shot
- Delay or Reverb Fx
- Route Mood wheel and Aftertouch to differents destinations
- Mode Poly/Paraphonic or Mono
- Spread
- All parameters map to Midi Control Change
- 100 Memory
- and more to comes......