We recently started learning Ableton Max for Live and have a little audio effect to give you for free.
Its an auto filter with selectable LFO – either a BPM synced LFO or a really slow free running LFO for looooong modulations. It also features a low and high frequency selector so you can effect just a particular frequency band.
DOWNLOAD – TOOTHS AUTO FILTER v1
Note you will need Ableton Live 9 and Max for Live.