Ableton Certified Trainer DJ Vespers is an expert on bass - see a previous tutorial covering gate and stutter effects for basslines. In this new tutorial, Vespers goes even deeper, looking at sub bass, and how to create it with Operator:
An animated bassline can really make a track - taking the low end from supplemental to prime time. In this tutorial, Ableton Certified Trainer DJ Vespers demonstrates his custom Effect Rack in Live for gating and stuttering his bass sounds:
For more tutorials and a free eBook, see DJ Vespers' site.
If you're looking for tape-stop effects in Live, then there's a couple great free options: Pitch Drop by Mormo, for Max for Live, and this free effects rack from Certified Trainer Yehezkel Raz: