What filter is this, a DC filter or a resonant filter?
Sorry for the confusion
That's 2 different things.
After Kuzma feedback i tried to add a DC filter inside the FM algorithm... It's to remove the 0Hz component in some operator to get rid of the random pitch shift it creates.
Most user won't ever know about this one. I'll advertise that as "smoother FM alogrithm". In the above firmware it's only implemented in ALGO1 TO 9.
Now in the new firmware, there's something i worked on the last couple of weeks, one effect slot per instrument (to chose form Low pass, high pass, bass boost and mix).
This one will be advertise as "FX section".
Hopes that's more clear.
I'll open a sticky thread with a beta version discussion later today.