Rise/OverRun

First your signal is fuzzed up, then split into parallel low pass, and band pass filters. The frequency of the band pass filter is then modulated by a staircase shaped waveform, whose speed is controlled by the predominant frequency of whatever you’re feeding into the pedal. 

Lower notes are slower, higher notes are faster.

Controls for:

Bandwidth: Flavor/intensity of filtering

Division: Over all speed range of modulation 

Volume: Output level

Pedal has soft switch/relay based true bypass