SynthEdit's synths are automatically polyphonic. For this to work correctly, each synth must be in it's own container. Each container should have exactly one 'MIDI to CV' module.
To play multiple notes, SynthEdit clones (copies) the modules as needed ( you
can't see the clones ). To set the Polyphony (maximum number of notes playing
at once), access the container's properties (Right Click - Choose 'Properties',
'Polyphony').
'MIDI to CV' modules have a parameter 'Mono
Mode', if on, this overrides the container's polyphony. Setting mono-mode
is usefull for bass lines and lead sounds, where you are imitating a
one-note-at-a-time instrument. Fast bass lines sound clearer without
several notes blurred together. In mono mode you can use the 'Retrigger'
option to make legato(overlapped) notes merge together without retriggering the
filter. You can also use Portamento to slide the pitch between legato
notes.
SynthEdit only clones the modules it needs to. e.g..
Here the LFO is shared by all the voices. This is because the LFO
does not depend on the 'MIDI to CV' (it is not 'downstream' in the signal
path). This saves CPU power. SynthEdit analyses each synth's signal flow
to minimize the number of modules cloned to sound a new voice. This helps
reduce the CPU load.
Voices that aren't in use don't use any CPU power.
ADVANCED NOTE: If you want one LFO per voice, you will need to connect it
downstream from the 'MIDI to CV', for example you could connect the MIDI to CV
'Pitch Out' to the LFO via a 'Switch' module, then turn off the switch, you
would then hear an independent LFO on EACH note you played.
One common mistake with SynthEdit is to place the "MIDI to CV" in it's own container.
A symptom is the Oscillator pitch jumping higher with each new
note. The downstream modules are outside the 'MIDI CV's container,
they arn't cloned when you play a new note. Instead the 2 note's
pitches are combined before the Oscillator.