Description of the project:

This code is a modification of OscPocketD/VASynth, created by Staffan Melin, staffan.melin@oscillator.se.
It was later modified by (Steven @moonfriendsynth) to work with the Daisy Pod.
I (Christopher @Nettech15) have modified it further to run on the Daisy Seed without the use of the Daisy Pod board.
Synth parameters are now controlled by a Miditech i2-61 midi keyboard.
Feel free to copy, modify, and improve this code to match your equipment and sound requirements.

Specifications:

- 7 voice polyphonic.
- Dual oscillator per voice.
- VCA per voice. 
- VCF (4-pole Resonant low-pass) per voice.
- Separate ADSR's for VCA and VCF
- MIDI Editable parameters. 
- Ten User-Programmable Patches using QSPI Flash memory storage.
- Waveform select for both oscillators; Triangle / Saw / Square(PWM) / Polyblep-Saw.
- Oscillator Mix. 
- Oscillator #2 De-tune. 
- Scale for Oscillator #2. 
- LFO for Pitch Modulation Wheel.
- LFO for Pulse Width Modulation #1.
- LFO for Pulse Width Modulation #2.
- LFO for VCA/VCF Modulation.
- Waveform select for VCF/VCA LFO.
- Keyboard follow for VCF and ENV.
- Keyboard velocity routable to VCA and/or VCF. 
- VCF envelope level. 
- Stereo simulation effect.
- Single-Track ScratchPad Sequencer.