Pattern Keeper

The Pattern Keeper is a stereo looper designed for real-time layering and loop manipulation. It provides up to 60 seconds of stereo recording at 48 kHz/24-bit and supports mono or stereo sources with dual outputs. Tape-style pitch shifting changes both pitch and playback speed from one octave down to one octave up, while a fourth-order digital filter provides low-pass filtering below its center position and high-pass filtering above it. A dedicated toggle switches between forward and reverse playback. Volume, pitch, filter, playback direction and loop triggering can be mapped to an expression pedal. Dedicated controls provide direct record, play and delete functions without menus or double-tap commands.