Accent Velocity is a new Max4Live device inspired by the Accent feature on the Korg ER-1 Electribe. It allows you to set steps in the sequence to emphasise - adding a new flavour and flow to incoming MIDI. The accent knob alters the velocity difference between accented and unaccented notes - and turned fully clockwise it'll completely mute unaccented notes.
There are features to boost the accented notes, giving them greater impact - as well as sequencer options for speed of playback, playback direction and number of steps (1-32). It has an invert function to quickly switch accented/unaccented notes as well as a randomise function for the sequencer.
Accent Velocity is available from Gumroad here: https://gumroad.com/l/accentvelocity