- optimized polyphony handling to squeeze in a 4th voice
- added LFO support (2 per voice: 1 pitch, 1 envolope mod, any waveform)

In this demo, the slow LFO controls attack & decay time of each note...

stm32f401 - 4-polysynth + lfo

Same as https://soundcloud.com/forthcharlie/stm32f401-4-polysynth-lfo, but using sin oscillators instead of rect osc...

stm32f401 - 4-polysynth + lfo (sin osc version)

Today I added 2 global LFOs for pitch & envelope modulation, as well as added a fixed length stereo delay line (maxed out the avaiable 64KB RAM, might switch to mono delay).

There's also a new additive oscillator with up to 4 configurable harmonics (this demo only uses 2)

stm32f401 - 4-polysynth + additive osc + delay

Added some features to generative semi-random sequencer (Mersenne-Twister Tiny), now with key changes on predefined secondary scale. Also switched to mono delay to achieve longer periods (due to RAM limitations)

stm32f401 - 4-polysynth + additive/saw + monodelay

Initial stab at morphing wavetable osc
(note to self: here morph between H2/H3, triangular morph LFO @ 2Hz)

stm32f401 - 4-polysynth - wavetable morph

3 LFOs in action:

1) ADSR env mod
2) Pitch mod
3) Wavetable xfade

stm32f401 - 4-polysynth - wavetable xfade + noise

Created during 3-day ACT Festival workshop, demo of 2-track sequencer (no MIDI) w/ interactive scale-locked transpose control. Sine oscillators only for more minimalism

Sign up for more workshops: http://workshop.thi.ng

stm32f401 - 2-track sequencer (sines only, ACT workshop)

DIY Synth workshop exercise (London), 2 tracks of different durations (2 osc each), 4 new wave tables, 0.15Hz LFO to morph between wave tables, random attack time changes

stm32f401 - 2-track - wave table morph - polyrhythm

Same as previous track, but applying another LFO to LFO used for wave table morphing. This secondary LFO is tuned to go upto 3520Hz (so not really LFO range anymore) to create ring modulation effect...

stm32f401 - wave table morph - ringmod (London workshop)

Hardsaw => Hardfloor, a little homage to: https://www.youtube.com/watch?v=Un4CeV_l3pI

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