Loop Audio Maker
This loop audio maker lets you pick a loop region, smooth the seam with an equal-power crossfade, preview it looping, then export the single loop or several repeats as a lossless WAV — all in your browser.
ℹ The crossfade blends the loop’s end into its start so repeats are gapless. If you still hear a click, increase the crossfade or nudge the start/end so the levels match at the seam. Output is WAV (browsers can’t write MP3/AAC). Everything runs locally — your file is never uploaded.
How It Works
Your file is decoded to raw samples in the browser. You choose a loop region; the tool then makes that region loop seamlessly by crossfading its end into its start. With a crossfade of X samples, the loop is region − X samples long, and over the first X samples the fading-in start is mixed with the fading-out tail using an equal-power curve (sine/cosine) so the loudness stays constant through the blend. Because the blend begins exactly where the tail left off, the join is continuous — tile that loop any number of times and it plays without a gap or click. Exporting several repeats simply writes the seamless loop end-to-end as a single sample-accurate WAV file, and nothing is uploaded.
Clicks at a loop point usually mean the waveform level or slope doesn’t match where the end meets the start. A longer crossfade hides most of that; for very tonal material you can also nudge the start/end so both land near a zero crossing — a point where the waveform passes through silence — which gives the smoothest possible seam without any crossfade at all. A crossfade can’t exceed the region length. For MP3 output, re-encode the WAV in a desktop app.
This loop creator is particularly useful for creating seamless background music loops, game audio loop assets, meditation audio, and ambient soundscapes. When looping a music track, knowing the exact tempo makes it much easier to pick loop points that fall on bar boundaries — use the BPM detector to find the tempo before setting your start and end times here.