Dead Dread Bass?

[AJ RUFF]

Would anyone out there be kind enough to share their knowledge with me, on how to make this warping bassline

 

[T:M]

Sounds like a square with a long attack on a lowpass filter.

 

[Attire]

Sounds like a square with a long attack on a lowpass filter.

That's what I was gonna say. Pretty simple!

 

[logikz]

for some reason it sounds even better if you make a longer synth bass with a closing filter env, resample and reverse that.