OPLA SOURCE CODE

HANSY SYNTH O.P.L.A SYNTH PROJECT

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......