First video: This sounds like a voice. I’d try a formant filter or imitate a formant filter.
Second video: Sounds like something I’d do on a Digitone.

In both cases, you need a filter with lots of resonance, but not that sharp of a resonance.
Digitone has the LP2 filter, Syntakt has various types of peak filters.

Or, especially the first video sounds more like a band stop filter, which can be only done on the Syntakt.

… at least that’s what I hear :wink:

2 Likes