No proof of principle on polyphony

[goofy2k]

Until now did not succeed to play two simultaneous tones.
Not with keyOn/keyOff
Not with setVoiceParamValue

[goofy2k]

Overlapping notes give a strange interference hum. Tried different combinations for distributions of tasks over CPU0 and CPU1.

audio task, midi task, wifi task, mqtt task.

No success.

[goofy2k]

For the hum there is interaction with the actual Dsp used. WaveSynth_FX is more sensitive than SimpleSynth_Analog. Lowering SR from 48000 to 9600 helps......