Torin Hopkins, PhD

Instruments & Making · HCI & Interfaces

LooptyLooper

A live looper that runs in the browser, built for footswitch performance with any instrument or voice.

LooptyLooper

LooptyLooper is a live looper that runs in the browser, for any instrument or voice. Open the page and loop with a laptop mic and keyboard, then add an audio interface, a footswitch, or MIDI controllers when the music calls for them. The aim is low upfront cost and high creativity: four synced tracks and song parts to jump between, without buying a loop station.

How it plays

  • A two-switch footswitch grammar: tap to record, play, and overdub; double-tap to stop; hold to undo. Every action fires on press, so timing stays tight.
  • The first loop sets the grid. Later loops snap to whole bars and stay phase-locked to the transport for as long as you play.
  • Song parts (verse, chorus, bridge) each have their own four tracks, and part changes wait for the next bar.
  • Bluetooth page-turner pedals work everywhere; MIDI footswitches work in Chrome, Edge, and Firefox.
  • Latency calibration shifts recordings by the measured round trip, so overdubs land where you heard them.
  • Under the hood, an AudioWorklet looper core draws on pooled memory, so hours-long sessions never allocate big buffers on the audio thread.