Loops that wrap like they never ended
Drag the region, audition it truly gapless, let the crossfade melt the seam — then export a WAV that carries its loop points inside the file, the way samplers expect.
Nothing is uploaded — your audio never leaves your device.
Drag the loop. ←→ nudge the end (edges snap to zero crossings), Alt for the start. Aim for whole bars: at your BPM, one bar = 240 ÷ BPM seconds.
Your ears place this loop. The studio's engine places it on the bar.
A seam your ears approve is good; a loop that's exactly four bars at the song's real tempo is better. SongRepeat in the studio cuts beat-locked loops from the actual grid. Sign up: 3 full packs free.
The embedded-loop-points superpower
Most loop tools hand you a file and wish you luck setting the points again in your
sampler. The smpl chunk fixes that: it's a forty-year-old corner of the WAV
spec that carries "loop from sample X to sample Y" inside the file itself. Kontakt, TAL,
DecentSampler, MPCs, and most hardware read it on import — your loop arrives already
looping. Almost nothing free writes it; this tool does.
Frequently asked questions
How do I make a loop sound seamless?
Three things kill seams: clicks (fixed by zero-cross snapping, automatic here), level jumps (fixed by the crossfade slider, which melts the end into the start), and musical mismatch — the loop needs to end where the groove expects to restart. Nudge the edges with the arrow keys while the gapless preview runs until it disappears.
What are embedded loop points (the smpl chunk)?
WAV files can carry sampler metadata that says 'loop from here to here'. Hardware samplers, Kontakt, TAL, and most serious soft-samplers read it and loop natively — no manual point-setting. This tool writes that chunk into your export, which almost no free tool does.
Why does my loop click even at a zero crossing?
A zero crossing fixes the level discontinuity but not the slope — the waveform can still bend sharply at the seam. That's what the crossfade is for: even 10–20 ms of equal-power blend erases the bend.
What loop lengths work best?
Musical power-of-two lengths — 1, 2, 4, or 8 bars — loop most convincingly. If you know the BPM, bar length in seconds is 240 ÷ BPM; the readout shows your selection's length so you can aim.