Introduction to MoDrum's built-in Looper
MoDrum's integrated Looper provides tempo-synchronous playback of audio loops, allowing you to add a backing track or a sampled phrase to the mix. To match the current tempo the audio loop is pitched up/down in real-time.
Automatic BPM Detection
When an audio loop is loaded, the Looper automatically syncs up, and starts repeating it continuously with the next downbeat. To allow MoDrum to detect the sound files's original tempo its length in beats must be a power of two (1, 2, 4, 8, 16, 32, etc.).
Audio loops can be imported into MoDrum via Pasteboard (for example from BassLine, iKaossilator, or NanoStudio), via iTunes (from Garageband, Ableton Live, or from the internet), or via "Open In..." (for example from the Mail App). The Looper can also be used to resample MoDrum's own audio snapshots.
MIDI Clock Sync
When MoDrum is sychronized to an external MIDI Clock with a jittery signal, the looper will continuously change the playback speed. In this case you'll have to enable the "Jitter Reduction" option from within the MIDI Setup dialog.