The initial sound generation results from the accumulation of 4 oscillators and a sub-harmonic wave table. Multiple stages of delay and reverb combine with various low pass / band pass filtering controlled by an LFO network.
In addition, two separate low pass filters are after the output stage of channels 1/3 2/4 respectively. All sound processing & signal generation is connected to the master LFO network (parameter blast-m). The LFO network makes it easy to modulate any key parameter without using external MIDI controller modulation. However, all of ABV4 Sophia’s parameters are controllable via MIDI control change messages.
Video demo via myVST